Topics


How do I attach 2 pieces of metal together without a welder and still be structurally sound?

I want to play around with building a recumbent bike and a rear steer trike type bike but I dont have access to a welder, would gorilla glue or a jbweld like epoxy be strong enough to use?

Question by l8nite    |  last reply


Automatic Button Pusher

Guys, I'm dyin here, this should be such an abvious creation! I need to create a simple mechanism to repeatedly push a button on a Playstation 3 controller. Doesnt have to be quick at all, even every few minutes would work, be it has to be able to repeadedly press a button for a few hours at a time. I figured I would go Homer style and grab myself a trendy little dipping or drinking bird, but figured it would be reliable enough to keep up for a few hours. Seems terribly trivial, but that's whats driving me so crazy to figure out a solution?! Any crafty McGuyver's out there want to take a stab at it?

Topic by hannibalxlecter    |  last reply


If a person can feel magnetic fields does that mean they have electromagnetic hypersensitivity? Answered

I want to know cause I have a reletive who can feel magnetic fields from magnets.

Question by nerd7473    |  last reply


Silicone thinners; what is a suitable compound to thin silicone caulk? Thank you. Answered

Preferably non-toxic and inert, to make the silicone caulk/gel more viscous, to allow it to flow into a mould more readily.

Question by brendanmccloskey    |  last reply


Average MIG welding costs?

I was interested in welding, and I've heard that MIG is a good type to start with. My question is, what are the average costs to you good citizens of Instructables with moderate use/ what were your starting costs?

Question by The Dark Lord    |  last reply


Can I weld aluminum with a mig welder if I have flux core wire? Answered

My parents got me and my younger brother a mig welder for Christmas they also got flux core wire because gas is expensive. But my brother keeps saying that we cant weld aluminum with it I have heard of aluminium flux core wire but he still says it wont work. Dose the aluminum flux core wire work any good or is there something else we need to get?

Question by Dalen Brewer    |  last reply


Can a ARC WELDER be converted to a SPOT WELDER?

I have this ARC welder which puts out 50 AMPS, flip the switch gives you 80 AMPS. I would like to spot weld thin metals for a project i am working on, and by all accounts on what iI have seen on the INSTRUCTABLES all I would need is the copper tips attached to the clamp device

Question by yeagerxp    |  last reply


welding a motorcycle?

I know how to weld. How to weld on a motorcycle?does the battery terminals need to be removed and what other electric components need to be removed so they are not damaged from the increased voltage running through the frame when welding?

Question by 103curly    |  last reply



RSS Feed don't work.

Instructables.com -> RSS Feed don't work.Check please.

Topic by megonal    |  last reply


How do I deboss and ink a silicone wristband?

I need 300 silicone wristbands all with different numbers on them. Ive contacted many different websites and they all say in order to do it, I would need to place 300 different orders which would be VERY expensive. I was hoping to buy blank ones and do it myself. Does anyone know how this is done? is this done with a laser cutter? Can it? I've also tried to do this with a sharpie pen but the ink rubs off. Any ideas to do something that way?

Question by djskype    |  last reply


VALVE NOISE AFTER ENGINE REBUILD

I just finished rebuilding my Audi 80, 1.8 engine in which I removed the Valves, removed all stuck carbon, watch with petrol and reset in orderBut when I started the engine, I noticed unwanted noise from the cylinder. I hate this noise from the valve, please what can I do again?

Question by degosh    |  last reply


Glue

Can I use wood glue to cover a hardcover book with leather?

Question by YvonneK21    |  last reply


Ino files problem

During publishing my the last Instructables project there was a problem with uploading .ino files. It was at beginning of November. There is message "Internal Server Error". It looks, according web description, an error is not on my side. I have asked Instructables team for help. They have answered. issue is known, and promised to do something and solve a problem. But nothing was done for more than four weeks. Other photo files were uploaded, but it looks like a problem is for all text files. Can somebody advice how to upload ino files?

Question by kamil47    |  last reply


Power supply from Ebay

I bought Switching power supply (220v AC>DC 0-48v DC 1000w 0-20Am)for my ZVS Driver, but not working properly, l need full 20Am, but this piece of shit do not given me more than 6.00Am at 50v! And values on the display are arbitrary!? I wrote on the seller for this problem, he wrote to me "When used load equipment The special insert must be taken out " I kill myself from 2 days to find this special insert, can't find it! Someone can tell me where to find this special insert? I post the full imal from the seller, he explains for knowing people, l need someone to explain to me with semple words / Dear friends The supplier replied that if you want to reach 20A, it depends on the actual current of the load. If the load is 6A, the maximum current can only be 6A. The actual current is determined by the load, and the actual current value is displayed. How to limit current: If no current is required when the current is limited, it is necessary to connect a plug to display the current value. The 6th and 7th connection port can be connected to a special plug to limit the current (regulate current). When using load equipment, The special insert must be taken out. When the load equipment is connected, the current value can be adjusted directly in real time. The maximum digital display current value is the maximum current value of the load equipment. Digital display current value will not have continuous real-time synchronous digital display, only the maximum current value of the device will be displayed./

Question by Viktor Karadzhov    |  last reply


Bio-technology (reactors)

I have a DIY perfusion bioreactor,when linked to a modifed haemodyalsis machine via myself, it allows for long term storage (in theory) of anything up to pretty much a human fetus or brain (provided the DNA matches so as to avoid my body attacking whatever lies within the reactor), this has been tested on various DNA and cell structures twice, I have no intention of trying again as dialysis even when done by experienced highly skilled professionals will inevitably over time lead to death, on top of that the amount of pain involved makes conducting experiments very difficult. Has anyone any experience in the more standard system of blood bags PC controlled to feed the environment as I am a little out my depth, I am looking for less dangerous and painfull solutions.

Question by RandomNOOBy  


Simple and very effective device to quit smoking

SIMPLE AND VERY EFFECTIVE ANTI SMOKING DEVICE TO QUIT THE ADDICTION OF NICOTINE :This is a very simple solution and based on vibration therapy.As per sketch there is two vibrational motor(Cellphone vibrational motors) and these will run with batteries.These motors will create vibrations.Now What is needed is that just transfer these vibrations on the Tongue .When someone is getting desired to take Nicotine as any form (Cigarette,tobbaco) then just put this device on tongue for 3 to 5 seconds and will feel result that the desire of taking of nicotine is no more.The result will be amazing to quit the addiction of tobbaco .even just use the device for 25 to30 days continuously and the desire of taking tobacco will be ended permanently.The part of the device which is going to transfer the vibrations on tongue will be made with COPPER.The reason why the device is working is that it is going to stimulate the neurones in the brain through tongue vibrations to suppress the desire of taking nicotine.Why I am presenting this solution as I have been able to quit the tobacco addiction myself after using this vibrational system. It is very simple to manufacture it.

Topic by vikram_gupta11  


Need Help Finding an Old Flash Game?

Not sure where to start, it was a old game I used to play back in the day when I was a kid and if I remember correctly it used to be on FB but it was taken down, not sure how to explain the game but it was a multiplayer 2D game where you would be a ball that has a face on it kind of like an emoji face and you would race against other people to get to the finish line and the map that you would race on would be massive and people would be going over obstacles to get to the finish line and if I'm correct the maps would be really compact and everybody would be all over the place trying to get to the finish line. oh and you could change faces on your ball character to a angry face or a sad face to a lot of faces really and that's it really, that's all i remember.

Question by ProjectAndromeda  


Idea for a non-ideal Carnot cycle based engine.

Initial Stirling engine conceptFor some time I was contemplating an idea for a Stirling engine that would work quite differently than the other designs that I came across. Whole internal volume of an engine may be viewed as a closed-loop pipe, trombone-like slide mechanism allows this pipe to change its length. Electrical fan replaces displacer and pumps working fluid throughout the engine constantly and in one direction. Some portion of the pipe is replaced with branching structure that consist of two heat exchangers (hot and cold) and regenerator. On both ends of this structure special valves are located that connect one of the structure’s parts to the main pipe, so that whole engine forms one closed-loop. While this happens, both of the unused parts are completely bypassed.This design should have many advantages. Working gas is in constant motion and little energy is wasted on accelerating it. Gas may pass many times through heat exchangers, allowing for much better approximation of isothermal processes. Disconnecting unused heat exchangers from the rest of the engine should minimize volume of dead spaces.There are some drawbacks to. Slide mechanism allows only very small changes of total volume (compression ratio is low), and that limits engine’s ability to operate with higher temperature differences. Piston, which is part of the slide mechanism, and especially valves, are heavy and this makes them unsuited for high speed operation, making the whole engine bulky. I also except that an area of all surfaces that are sliding against each other and produce friction would be higher than in traditional Stirlings.Problems with Stirling cycleIdeal Stirling cycle (Fig. 4) consist of two isothermal processes (constant temperature) during which work is performed, and two isochoric processes (constant volume, no work performed). Isochoric processes function is only to change temperature of the working gas, and this takes a lot of energy to do so (especially if gas with high heat capacity is used). Regular Stirling engines try to minimize this inefficiency with regenerator. But when I tried to analyze this process mathematically, I noticed that even regenerator with very high heat capacity cannot store more than half the energy needed to perform next isochoric process (see lower left part of the spreadsheets for more details).Fig. 5 represents heat pump (or refrigerator) working in a modified Stirling cycle. Isochoric processes represent transfers of heat to and from the regenerator. Rest of the temperature change is performed by polytropic processes, during which heat flows to or from the heat exchangers and also work is performed. I chose to represent heat pump, instead of a engine because engine working with this modified cycle wold require isochoric processes to be performed midstroke (or transfers of heat to regenerator would have to be performed during polytropic processes, when working gas changes its temperature also due to work being performed).Note that I am using word polytropic to indicate processes where gas changes its energy both due to heat transfers and work performed. When special cases of polytropic process are mentioned (isothermal, adiabatic, isochoric) I use their specific names.Solving those problems with Carnot cycleLegendary Carnot cycle consist of two isothermal processes (just like Stirling cycle), but changes of temperature are accomplished by the adiabatic processes (no heat transfers with the surroundings), instead of isochoric ones. This has huge advantage, because when energy is added to the working gas during adiabatic compression, all of it can be later recovered during adiabatic expansion.Design I previously mentioned can easily be adapted to work as a Carnot engine. Only change that is necessary, is replacement of regenerator with the empty pipe (ADIABATIC PIPE in Fig. 2). When valves connect this empty pipe to the rest of the engine, there is no heat transfer between working fluid and thermal reservoirs. Any changes of engine volume modify temperature and pressure in a approximately adiabatic fashion. To model what happens with the engine I used slightly modified Carnot cycle (Fig.3). Just before adiabatic process end, short polytropic process begins. It is done so that loses associated with valves connecting both adiabatic pipe and heat exchanger to the main part of the engine for a short period of time can be better simulated. Heat pump working in this cycle is shown in Fig. 6.Design detailsEngine uses special valves, which external shape resemble truncated cone. Smaller base of this cone faces main part of the engine, larger one heat exchangers. Inside there is a pipe, with one opening right in the center of smaller base. The other opening is located off-center on the larger base, so it can connect to the one of the heat exchangers or adiabatic pipe (which are situated just like chambers of a revolver’s cylinder in respect to each other). As this engine engine will most likely operate under low RPMs, flywheel will have to be connected through a transmission with very high gear ratio. The flywheel will have to be quite bulky as well. This poses another challenge, as the pressure inside engine’s tubing will be higher than atmospheric, and at least space around the other side of the “piston” will have to be pressurized as well. If only the immediate surroundings will be pressurized, and gears, flywheel, electric motor/generator will be outside of the container, then very inefficient seal will have to be employed. If everything will be located inside the pressurized container, then fast moving parts will be working against dense gas. Pressure in this area ideally should have such a value, so that on every piston stroke energy is both added to the flywheel and extracted from it as to make energy storage requirements more manageable. This requirements may also be further reduced by employing some other energy storage form. And of course exchange of heat between main part of the engine and this pressurized section must be taken into consideration.Then, there is problem of heat exchangers. They can be either large diameter pipes with fins, or smaller diameter ones that are densely packed (this seems to be must popular configuration in Stirling engines). As heat transfer with the outside of the engine takes around half of the piston stroke, it might be a good idea to employ two pumps of heat transfer fluid per each of the two heat exhangers. One would work constantly to transfer heat from some large heat reservoir, the other would transfer heat to the working fluid only when it is necessary. Some another heat exchanger would have to be placed between those two circuits.And there is also a question of the piston. Basic trombone-like version could be replaced by the something similar to the design drawn in Fig. 7, where two parallel tubes, connected by U-shaped piston, are replaced by the coaxial pipes with volute on the outer section that allows connection another parallel pipe. Piston itself has then small tubular part attached which allows working fluid to pass from outer section to the inner section. This design has only one high pressure seal, is possibly lighter, but fan that pumps working fluid will probably need to be more powerful. Problem of sideways motion of the piston must also be analyzed, and it can be either resolved with piston skirts or the crosshead. Interesting aspect of this problem is that while most frictional forces in the engine are mostly independent of the engine speed, forces associated with this sideways motion of the piston increase with engine rotational speed.Another possible improvement would be making adiabatic pipe shorter than the heat exchangers, which would reduce volume of dead spaces.Engine parametersIn case of a engine that uses helium as a working fluid, has minimum volume of 46.7 liters, maximum volume of 70 liters, operates at temperatures of -5°C and 37°C with the speed of 15 RPM you can expect that it will produce 1138W of power at 8.13% efficiency.In the case of heat pump that operates at the same parameters you can expect that it will require 2300W of power and achieve COP 4.95You can find calculations, diagrams and the detailed descriptions inside non-ideal_carnot_engine.zip (it is unfortunate that Instructables do not support uploading .zip files and other file formats any more, and I have to use another website just to upload few spreadsheets).Possible applicationsI started thinking about this concept when considering applications of thermal energy storage. In more northern latitudes largest factor in domestic energy consumption is heating. So, at least in my opinion, any movement toward replacing fossil fuels with renewables should focus on this largest contributing factor. And this actually is quite fine because storing 1 kWh in a tank filled with water, rocks/concrete or simply in the ground is much cheaper than storing it inside lithium-ion batteries. And general idea behind this low temperature engine, was that some part of this large amount of energy stored to be later used to heat buildings, could be converted into electricity.It should also be able to work in reverse as a heat pump or refrigerator.

Topic by rarinn  


Help: How to order a PCB correctly? Answered

Hi there,I'm not entirely sure whether this post is in the right place nor if the question is set up in the right way. It's my first time in here. So in case forgive me.I could need some help. I want to craft a special clock for which I found a nice guide on your platform:https://www.instructables.com/id/Lord-Vetinari-Clo...The problem is that I'm not very competent with electronics. In Step 5 of the instructions I need to order a PCB. The EAGLE files are already provided so, as I understand it, I 'only' have to order the PCB accordingly. I tried to get a read on the topic but as I have never really worked with electronics it was rather confusing and it seems to be a process where mistakes are easily made.The rest of the guide (e.g. software) shouldn't be a huge problem (though I'm not entirely confident the aspects "PIC12F683 IC" and "PIC Programming Kit". But I guess I can sort that out on my own if needed).I really would appreciate if someone could help me in some way. Maybe with an explanation on what to do or a link to a guide on the topic that fits my situation or anything else. :)Have a nice day!

Question by Nimlod    |  last reply


Circuitry help needed - microcontroller in binary clock

Ok, so I am currently working on a project which involves some circuitry and programming. I am planning to make a simple binary watch. Now with my current plan I am planning on making 2-3 circuit boards depending on what I can get. The first circuit board will connect the leds for the time read. It will be a standard four column hour and minute binary clock readout. The second board will contain an ATtiny85 microcontroller, a 74HC595 8-bit shift register, two push buttons, two 10k ohm resistors, and four 220 ohm resistor. The third board will be glued to the bottom of the second board for the battery holder and some extra space to add wire tracing. Now I plan to design and etch my own pcb boards and solder them together. Though for the second and third board being glued together would add a bit of thickness so I am wondering if I can buy a dual sided pre-sensitized circuit board to etch?Thes plans are based off the work of another user on here, link to his clock below: https://www.instructables.com/id/Simple-Binary-Cl... Credit to him for this great and simple system. With my very limited knowledge and understanding of circuitry and programming, this is one of the most straightforward clocks I have found. This is general format I will try to follow, though I do wish to make some modifications to the circuit or program based on what is possible with the circuit setup. First I am concerned about the power consumption of the system and how I can reduce the supplied power to make it run on a watch battery and run for about a year if possible or longer. Second I know that adding a crystal oscillator can improve the accuracy of the clock by synchronizing the internal clock on a set frequency. So with that, how would I add a 16 Mhz crystal oscillator to the circuit? The program that is given in the project runs based on the internal 16 Mhz internal clock of the ATtiny85. Third question is what system works best to program the ATtiny85? I have a Raspberry Pi 3B+ and I also have Syper IDE and I am fairly good at programming with python. So could I program the ATtiny85 with my Raspberry pi and use python? Or would I have to use a different board and language to program the micocontroller?

Topic by Tman179    |  last reply


Programming help needed!

So I'm currently working on a project to build a binary clock style watch. I have found a pretty straight forward and simple project to replicate. The project does give a code to upload to an ATtiny85 so that the project will work. Now I noticed that he was programming his ATtiny with an Arduino board and I assume he used a different coding language than python(which is what I am familiar with). Here is the link to the project for more info:https://www.instructables.com/id/Simple-Binary-Clo...Now I have a Raspberry Pi 3B+, and I have Anaconda, Spyder, and Jupyter on my computer which I have used before to create standalone programs. My question is can I use my raspberry pi to program an ATtiny85 or would I need a different board to program it? And second how simple is it to program the ATtiny?

Question by Tman179    |  last reply


Leather pattern

Please I need an urgent help on how to make the weaved pattern in the image below

Topic by sickon01    |  last reply


Arduino and Bluesmirf? Answered

HI, I have an arduino uno and I am trying to use a BlueSmirf to light up an LED. The problem I am having is that whenever I plug in the Bluesmirf, I cannot update the script on the arduino.  When I do, I recieve this error message :avrdude: stk500_getsync(): not in sync: resp=0x00. I have been able to connect the Bluesmirf to my computer, but I have not been able to get it to reply or to recieve data. Best Wishes Amantux

Question by amantux    |  last reply


How Do You Make a Clock Silent?

I've tried tinkering, but it never seems to work. Is there a way to make an analog clock silent (or at least quieter), without actually turning it off (the idiot's answer to everything)? I recently had to retire my old bedside clock, and so I bought a cheap-o one at Wal-Mart for about 5 dollars...and it is the loudest thing I've ever heard. Will someone please enlighten me?

Topic by KnittingFreak    |  last reply


Water-damaged PCB repair

So water leaked in to the General Electronic Module (GEM) on my pickup and now it's acting all funny. A/C runs when the ignition is off, randomly switching to 4L, airbag light chattering on and off, etc. I want to try and repair it. My intuition is that it just acts up when there's stray conductivity between traces/elements, so if I give it a good clean and keep it dry it should work like new.However, I noticed upon pulling it apart that there's some corrosion taking place. Can anyone suggest a good way to repair these traces/SMD resistors? I have a soldering iron but heavily oxidized things don't take solder well in my experience. Or should I just put some lacquer on it and not worry about it?Thanks!

Topic by RelaxedSoup    |  last reply


AC windturbines in Series to boost input voltage for inverter

I just purchase a VAWT (Vertical Axis Wind Turbine) and an inverter. The wind turbine is rated at 24V AC, however, I see that the rated V AC is requiring quite a lot of wind to produce that Voltage. By mistake, I ordered a grid-tie inverter that starts at 22 V AC and so far I have not been able to reach the startup voltage of the inverter. The inverter is rated 1000W and has AC input 3 phase. It can manage up to 60V AC input.The VAWT is 600W 24 V AC 3 phase.So here my questions: Currently, I don't get any power at all, so how can I modify my setup to make this work. I have a few suggestings that I would love to get some feedback on:Option 1: Buy a second VAWT + two rectifies that convert AC to DC. I should mention that the windmills will stand close to each other and receive more or less the same wind strength, so they should produce fairly the same amount of power. On the DC side, I would put them in series and then I would use a DC to AC converter to get the power back to AC current. The idea is that by doing this I would increase the voltage at least 22 V required by the inverter. I would expect some power loss and probably also voltage, using the rectifier and DC to AC converter. Option 2: Same as option 1, but after the rectifier and connecting in series, buy a new inverter that can handle DC input within the range that the VAWT's produces. (W and Voltage)Option 3: Buy a new Controller that charges a battery and connect an inverter to the battery to send power to the grid. Depended on the solution this solution might require a rectifier.Any comment on these or maybe other options?

Question by percbakk    |  last reply


DIY Hot Tub Solar Heating

Hi. I have a solar tub heating system 3/4s complete. It's based on a 100W PV panel to drive a pump, charge the battery and supply the electronics. A 16.5 sq ft solar water collector to heat the water. The heart of the system is a (made in China) DST1020 water temperature controller. My first thoughts are to open the flow of hot water to the tub at around 25degC, and cut it of at around 34degC. Problem - this controller has a reputation as a great little device, but it's a b**ch to program, the various instructions online just don't work. All I want it to do is close the heating dry relay contact at 25C and open at 34C. Easy? No. Has anyone got experience of this controller?

Question by Tubincyprus    |  last reply


12V DC adapter + incandescent= short circuit? help!

Hello! I have had an issue where i wore up a 12V DC adapter to a incandescent (halogen) bulb. wjen i do this, i believ it set of f the short circuit protection thingy in the 12V adapter.

Question by Cheesey125    |  last reply


How many LEDs i can connect to 240v AC supply using resistance?

Hello everyone, I just want to figure out how many 5mm super bright blue LEDs of  VF 3V , IF 25mA  i can connect directly to our 240v AC supply in series, only using a resistance in between. I google some circuits what i got :- 1) Android App named "ElectroDroid" can calculate Resistance for my 240v ac for 76 or 77 or 78 or 79 LEDs in series as 480 or 360 or 240 or 120 ohms respectively. I attached the screenshot with this question.. 2) A link http://led.linear1.org/led.wiz can calculate also but highest amount of supply voltage can be used 170V  and number of LEDs i can use is 56 in series with 82 ohm resistance in it. so i think option 1 can be more useful because i dont want to use extra thing ( transformer i think ) in my LED string to step down voltage in series. OR if anyone can simply tell me how many of LEDs 5mm blue VF 3 IF 25mA  i can use in a series directly to 240V AC supply with less complicated circuit

Question by redtulip4u    |  last reply


Instructables Answers

Check out our new Instructables Answers! Have questions about how to build or make something, where to get tools or materials, or about DIY and life in general? Me too. To get answers to all of our questions, we've put together an answers section on Instructables. Ask a question, and help answer questions from the community. Then, choose the best answer to help others with the same question. You can ask a question from almost any page on the site. Look for the blue answers box, and type in your question -- you don't even need to create an account or log in. Upload images to help explain your question.Answers is a work in progress, and while we have many of the key elements ready for you to test, there are a few obvious things we're not quite finished building, but will be up as soon as possible. Upcoming features include:Your questions on your "You" pageIndication of the number of answers and Best Answers for users replying to your questionsMore tips for asking good questionsAbility for the community to vote on a Best Answer to a questionLet us know how you like it, and how it's working. If you come across a bug, please submit as much information as you can to our bugs forum section. Update: Here are some tricks to see the Questions with the most Answers, and the most recent Answers: Instructables Answers Tricks - Sort by number of answers and most recent answers.

Topic by ewilhelm    |  last reply


HOW TO BYPASS COPYRIGHT ON VHS TO RECORD TO DVD?

I got a vhs to dvd recorder and trying to convert vhs tape to dvd but some of the tapes have some type of copyright protection and will not allow to be copied is there a mod or device that a can use to bypass the copyright. I am just coping these for own use.

Question by ewdys95    |  last reply


"Joule Thief" LED Night Light Kit & PCB

UPDATE: Everything is shipping now. My instructable is here: "Joule Thief" LED Night Light  Check out the new color changing Joule Thief! KIT Pricing is $10.50 for the kit. Kit 5 Pack Save by ordering 5 packs for $39! PCB Pricing is $4.50 for the PCB. Shipping is $5 for USA, $17 for the rest of the world. *** NOTE: The color of the PCB will be green instead of purple shown in some of the pictures. *** Payment To order, please go to my site - http://www.theledart.com/blog/archives/259. Click on "Add to cart" button and check out via PayPal. Please send messages or leave comments here if you have questions. Thanks!

Topic by ledartist    |  last reply


Help finding a fabric type

I have been wanting to make this cosplay forever. But I can’t seem to find the right fabric. It’s the knit/woven fabric that I need. See image.

Question by Gaiajuliacaesar    |  last reply


How to bend plastic optic fiber ?

Hi, I have 0.75, 1 and 1.5mm plastic opic fiber that I am using for my project (which will be the topic of my first instructables ;) ) I need a way to bend the POF in right angle. I don't care if the bending raidus is not very important (spec says max radius is 10 time diameter, 15mm radius is ok for me, and I don't care if I loose a little brightness). I want the POF to stay bend after I have bent it : it must keep the curve I gave it for at least 24 hours. I manage doing something not so bade (but really time consuming) by heating the POF with an hair dryer. I wander if anybody has a better tested idea ? (in the meantime, I'll try putin it in boiling water to see if it kep the shape once cooled). Regards, tReg.

Topic by treg    |  last reply


555 timer circuit question

Hi everybody! I need to make a small pcb which will be able to turn on/off a switch about 10/sec, whenever I turn it on. I understand that 555 timer is the easiest way to go.Even better it would be if it was fully customizable like I could set it to open/close the other circuit from 1 to10 times/sec per manual switch on and also set the duration that the 555 will be keeping the other circuit on each time . I am able to do the soldering needed but I don't know the parts needed and how to properly connect the the pcb.Thanks (sorry for my poor English)

Question by c_fish    |  last reply


Can I connect a car a battery to my Schwinn electric scooter to make it run faster and longer ?

I have an electric scooter that i want to take further that current batteries only run about 6 miles (3mile at top speed) and i want to hook up a more powerful battery to make it run longer and faster. is there a way to use a trolling battery or a car battery to do this?

Question by ardupont    |  last reply


My First How to? Video, Homemade rotating marble stirling engine

In this current video, I will explain you how to create a simple rotating type marble stirling engine easily using readily available materials. https://www.youtube.com/watch?v=DwGzXLCtvcMMaterials used:1. Testtube- Displacer cylinder2. Marbles - Displacer piston3. Glass syringe- Power piston4. Propeller- FLywheel5. 3V electric motor- Bearing supportPlease provide your feedback on the same. In this channel I have planned to post all of my stirling engine make with step by step instructions.Thank youRegardsGaneshView Video hereContent of the Video: ))Result demo ))Short theory behind working of stirling engines (Animated) ))Live demonstration ))Long run engine video

Topic by ganuganu    |  last reply


Infrared Sauna wiring?

Well, I bought a used infrared sauna the other day for real cheap because it "just stopped working all at once". Figuring its just a fuse or something, I took it. Well now I cant figure it out for the life of me.What seems to be the problem is that no power is getting to the primary transformer. That would be on the second small circuit board to the right. It is getting to the secondary transformer fine. Heres a pic of whats goin on. Those things on the sides are fuse holders, (no not burnt out).

Question by LiquidLightning    |  last reply


hooking up a 9-volt battery to a lazer pointer

Have you ever had a lazer pointer that was really fun, but then ran out of batteries? those little replacement batteries are hard to find. while I was supprised there weren't any instructables on this, I'll be posting one soon. I know how to use a 9-volt battery to power the lazer pointer again. this fuel cell is easy to find, and easy to work with. comments? are you interested?

Topic by mexx.admin    |  last reply


Cigarette Odor

Hi, I need help in getting rid of the cigarette odor from my room. Thank you for reading this. Elearner

Topic by Elearner    |  last reply


Why do my feet sometimes smell like malt vinegar? Answered

It's not every day or with all shoes, or only after eating cod at the pub...

Question    |  last reply


I observed suddenly my car stops while driving, steering wheel becomes hard and speedometer stop working, why? Answered

My car model is Honda CITY 2005 its dolphin type and i don't have any clue about this, please help me! thank you.

Question by SunilB5    |  last reply


Diagonally cutting across a plywood cylinder?

I want to make a couple of identical circular wedged speaker enclosures by cutting a large drum shell (16in by 16in floor tom) in half diagonally and then capping the open sides with discs, what would be the best/easiest method of holding the shell in place and making an accurate straight diagonal cut?i have access to a maker space but i haven't been in since their recent refit so i'm not sure what cutting machines they now have...

Question by ambientvoid    |  last reply


Can I get reasonable energy by placing a working LCD TV screen panel in sunlight and use it as a solar panel?

I have been given a large Sharp AQUOS G Series LCD TV to pull apart. I read recently that if you place LEDs in sunlight they will act like miniature solar panels and give of some usable electricity. What Id like to know is I place a more advanced light emitting device such as the LCD TV screen in the direct sun light will it produce more usable energy? Even if it was10 percent that of good solar panel, recycling LCD screens from the dump might be worth while? Thanks for your help!

Question by jojabo7    |  last reply


bubble wall?

Hi everyone! I am not a tech .. I am just a girl who loves to create odd things and gets really excited about making cool freaky lights in my house. I would like to find an inexpensive way to build a bubble light wall.. like make it big and part of the wall itself. I have some concept of what I need to do already, but am perplexed at how to build the tank itself .. like an 1nch or so deep .. but if anyone has any good ideas for this I would really love to hear them. also... would it be better to use panels or one large tank .. or if there is anything premade that i could convert into this. Thanks =)

Topic by lil devils x    |  last reply


Flash Powder Problems!!!!!

Every time I use flash powder from firecrackers to try to make a big one all it does is burn up. No matter how hard I try to compress the flash powder all it does is burn up when it is supposed to blow up. Any tips?

Topic by joeskater26    |  last reply


Instructables Maker Buddy Instagram Sweepstakes

We're hosting our first-ever Instagram Sweepstakes! This is your chance to win a phone video gimbal for you and a buddy! This nifty gimbal is great for boosting your storytelling for Instructables posts and Instagram stories! (Sorry folks, limited to the US only)Unlock your inner vlogger and head to our Instagram page for Instructions on how to enter: View this post on Instagram A post shared by Instructables.com (@instructables) on Dec 13, 2019 at 11:13am PST Official Rules BelowInstructables Maker Buddy Sweepstakes Official Rules(the “Official Rules”) PLEASE REVIEW THESE OFFICIAL RULES BEFORE ENTERING THE SWEEPSTAKES. NO PURCHASE OR PAYMENT OF ANY KIND IS NECESSARY TO ENTER OR WIN. A PURCHASE OR PAYMENT WILL NOT IMPROVE YOUR CHANCES OF WINNING.VOID WHERE PROHIBITED BY LAW. ENTRANTS WHO ARE MINORS: YOU MUST OBTAIN THE CONSENT OF YOUR PARENT OR LEGAL GUARDIAN BEFORE ENTERING THE SWEEPSTAKES AND PARTICIPATE UNDER THEIR SUPERVISION. Sweepstakes Description: Comment on the Instructables Maker Buddy Sweepstakes Instagram post, tag a friend who you think would also love the Prize and add the tag #InstructablesSweepstakes, and you will be entered into a random drawing to receive the prizes described below, all as further described in these Official Rules.General Conditions: The Instructables Maker Buddy Sweepstakes (the “Sweepstakes”) is sponsored by Autodesk, Inc. (the “Sponsor”). The Sweepstakes will start on [December 13, 2019 at 12:00 AM (PT)] (“Start Date”) and end on [December 16 2019 at 11:59 PM(PT)] (the “Entry Period”). Entry in the Sweepstakes does not constitute entry into any other promotion, sweepstakes, or contest. The distribution of the prize(s) will be at the sole determination of the Sponsor to the individual(s) deemed the winner(s) of the Sweepstakes by the Sponsor in accordance with these Official Rules.Acceptance of the Official Rules; Site Policies; Laws: By entering the Sweepstakes, those who enter the Sweepstakes (each, an “Entrant”) unconditionally accept and agree to abide by the terms of these Official Rules and by the decisions of Sponsor relating to the Sweepstakes, which are final and binding in all respects. The Sweepstakes shall be governed by these Official Rules and is subject to applicable federal, state, and local statutes, rules, regulations, and other laws (each a “Law”). The Sweepstakes is void where prohibited or restricted by law. The collection, use, and disclosure of information obtained online from Entrants in the Sweepstakes is governed by Sponsor's Privacy Statement, which may be viewed at https://www.autodesk.com/company/legal-notices-trademarks/privacy-statement, and other policies applicable to and available for review on the Instructables website at https://www.instructables.com/ (the “Instructables Site”) (collectively, the “Policies”). In the event there is an inconsistency between any of the Policies or any Sweepstakes promotional materials and the terms and conditions of these Official Rules, these Official Rules will prevail and govern. Eligibility: Entrants must be natural persons age 13 or older who are legal residents of the fifty (50) United States, the District of Columbia or Canada (excluding Quebec) at the time of entry. If on the Start Date you are a “minor,” meaning that you are under the age of majority in your jurisdiction, you must obtain permission from your parent or legal guardian, and your parent or legal guardian must consent to be bound by these Official Rules as if he or she were an entrant, before you submit an entry. Sponsor reserves the right to require minors to submit proof of parental/guardian permission and consent to these Official Rules at any time, without which they may be immediately disqualified from the Sweepstakes. In addition, Sponsor, its affiliated organizations, advertising and promotion agencies, the prize providers, any other company or organization involved with the design, sponsorship, or operation of the Sweepstakes, and each of their respective officers, directors, employees, and agents (collectively, the “Sponsor Parties”), and immediate family and household members of such individuals, are NOT eligible to enter the Sweepstakes. “Immediate family members” shall mean a person’s spouse and a person’s and their spouse’s parents, step-parents, legal guardians, children, step-children, siblings, and step-siblings, and each of their respective spouses. “Household members” shall mean those people who share the same residence, whether or not related. Participation in the Sweepstakes is voluntary, and is not intended to, and shall not be deemed to create, any employment, agency, partnership, joint venture, franchise, fiduciary, or similar relationship between Sponsor and any Entrant.How to Enter: Only persons who meet the eligibility criteria stated in Section 4 above should enter the Sweepstakes, and only those persons will be eligible for the chance to win a prize. No purchase or payment is necessary to enter or win the Sweepstakes. A complete entry will include, any information required in these Rules. All entries must be received by the end of the Entry Period. Incomplete, unreadable, late, or unintelligible entries are void and will be disqualified. In order to win, Entrants residing in Canada also will be required to answer a time-limited mathematical skill-testing question to be administered via telephone. Limit of one (1) entry per Entrant during the Entry Period. In case of multiple entries received from any person, email address, or social media account, only the first entry received from such person, email address, or social media account will be considered. In the event of a dispute as to the identity or eligibility of an Entrant, the entry will be deemed to be made by the “Authorized Account Holder” of the email or social media account used at the time of entry provided he/she is eligible according to these Official Rules. The “Authorized Account Holder” is defined as the natural person to whom the applicable internet service provider or other organization (such as a business or educational institution) has assigned the account. An Entrant may not use multiple email or social media accounts to enter, and if an Entrant does so, all of such Entrant’s entries may be disqualified. To enter the Sweepstakes, during the Entry Period you must comment on the Maker Buddy Sweepstakes post made by Instructables on the Start Date to the Instructables Instagram page, tag a friend who you think would also love the Prize and add the tag #InstructablesSweepstakes, and you will be entered into a random drawing to receive the prizes described below. THE PERSON TAGGED IN YOUR ENTRY WILL NOT BE ELIGIBLE TO WIN A PRIZE BASED ON YOUR ENTRY, BUT THEY MAY CHOOSE TO SEPARATELY ENTER THE SWEEPSTAKES BY SUBMITTING THEIR OWN ENTRY.For clarity, completion of one of the tasks as directed above does NOT entitle Entrants to a prize, but entitles eligible Entrants to enter a random drawing for a chance to win a prize. Winner Selection; Odds of Winning: On or around December 18 2019, at Sponsor’s offices, Sponsor will randomly select from the pool of eligible Entrants one (1) Sweepstakes winner(s) (the “Winner”). The odds of winning the prize depend on the total number of eligible Entrants who enter the Sweepstakes. Prize: The total estimated retail value of all of the prizes to be awarded in the Sweepstakes is $262. One (1) Winner will be awarded the following prizes with the following estimated retail value. The Winner may choose to keep both prize packs or share one with a friend:Prize Pack #1 (Estimated Retail Value: USD$131) EVO Shift Hand held 3axis gimbalInstructables T-ShirtInstructables NotebookInstructables PinPrize Pack #2 (Estimated Retail Value: USD$131) EVO Shift Hand held 3axis gimbalInstructables T-ShirtInstructables NotebookInstructables PinEvo Gimbals is not a sponsor of, and is not affiliated with, the Sweepstakes.The prize(s) may include one or more gift cards, gift certificates, stored-value cards, similar cards or certificates (whether in physical, electronic, or other form), or other items or services, which may be redeemed or received only at or through participating retailers or other locations. Each Entrant acknowledges that acceptance and use of any such prize are subject to all eligibility criteria, expiration dates, service or dormancy fees, use restrictions, and all other terms and conditions (if any) imposed by the issuer or provider of any such prize. Neither Sponsor nor any of its parents, subsidiaries, or affiliates is the issuer or provider of any such prize, and none of them are responsible for establishing those terms and conditions, for disclosing or explaining any of those terms and conditions to the Entrants, or for any Winner’s failure to comply with any of them. If a Winner does not comply with all of those terms and conditions, or if a Winner does not have access to a participating location, such Winner may not be able to obtain the maximum value, or any value, from his or her prize. General Prize Conditions: All details and other restrictions of the prize(s) not specified in these Official Rules will be determined by the Sponsor in its sole discretion. No prize is exchangeable, assignable, redeemable for cash or otherwise transferable, except at Sponsor’s sole and absolute discretion. Sponsor reserves the right to substitute for any prize one or more items or services of equal or greater estimated retail value. The value of each prize may be taxable to each Winner as income. If required, an IRS Form 1099 will be issued by Sponsor in the name of each Winner for the value of the prize(s) received. Each Winner is solely responsible for complying with any and all applicable federal, state, provincial, local, or other statutes, regulations, rules, or other laws of any jurisdiction and for bearing any personal income taxes (including reporting consequences thereof), VAT, customs duties, withholding taxes, or other taxes, fees, insurance, surcharges, or other costs relating to the applicable prize(s) and for any other liabilities incurred in connection with any prize. THE PRIZE IS AWARDED BY SPONSOR “AS IS.” THE SPONSOR PARTIES DO NOT MAKE AND HEREBY DISCLAIM ANY WARRANTIES, WHETHER EXPRESS, IMPLIED, OR STATUTORY (INCLUDING WITHOUT LIMITATION IMPLIED AND STATUTORY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, OR NON-INFRINGEMENT) WITH REGARD TO THE SWEEPSTAKES, PRIZE OR ANY PORTION(S) THEREOF.Winner Notification and Prize Claim: Within five (5) working days after the drawing, each Winner will be notified via Instagram message to the Instagram account provided in his or her Sweepstakes entry (a “Prize Notification”). Sponsor shall have no liability for any Prize Notification that is lost, intercepted, or not received by the potential winner for any reason. In order to claim a prize, each Winner may be required to provide his or her full permanent mailing address information and social security number or tax identification number for purposes of compliance with tax regulations. Upon Sponsor’s request, each Winner must also sign and return a release of liability, declaration of eligibility, and/or a publicity release. If a potential winner does not respond within forty-eight (48) hours of the Prize Notification (or a shorter time if required by exigencies), if the prize(s) or Prize Notification is returned as unclaimed or undeliverable to such potential winner, if a potential winner fails to comply with any of the verification or release requirements identified in this Section within fourteen (14) days of request, or if the potential winner is found to be ineligible, has not complied with these Official Rules, or declines the prize(s) for any reason prior to award, such potential winner will be disqualified and forfeit his or her prize, and an alternate Winner may be selected by the Sponsor from the pool of remaining eligible Entrants. Sponsor may successively attempt to contact up to five (5) potential winners in accordance with such procedure, and if there is still no confirmed winner of a prize after such attempts have been made, Sponsor may announce an alternate means for awarding that prize. The Winner must take possession of the applicable prize in the manner directed by Sponsor. Failure by the Winner to comply with any of the foregoing may result in disqualification. It is the sole responsibility of Entrants to notify Sponsor of any changes in name or contact information. In the case of a minor, Sponsor may award the prize to such minor’s named parent or legal guardian.Representations: By entering the Sweepstakes, each Entrant represents to Sponsor that: (i) the Entrant meets all eligibility requirements of the Sweepstakes; and (ii) Entrant understands and agrees that he or she shall not become, through participation in the Sweepstakes, an employee, agent, partner, joint venture, franchisee, or fiduciary of Sponsor.Release of Liability: To the maximum extent permitted by law, by entering the Sweepstakes, each Entrant agrees that neither the Sponsor Parties, nor any prize manufacturer or provider, nor any advertising or social media platform, such as Facebook or Twitter, on which the Sweepstakes may be advertised or through which it is accessed, is responsible for and, to the maximum extent permitted by law, each Entrant releases and holds harmless the Sponsor Parties, each such prize manufacturer or provider, and each such advertising or social media platform, from any and all responsibility, liability, claims, injuries, damages (including but not limited to direct, indirect, incidental, consequential, punitive, statutory, or other damages), losses, costs, or expenses of any kind (including, but not limited to, personal injury, death, or damage to or loss of property) arising out of or resulting from: (i) any violation by such Entrant of these Official Rules, the Policies, or applicable law; (ii) Entrant’s participation in the Sweepstakes; (iii) Entrant’s acceptance, possession, receipt, and/or use of any prize (or any portion of any prize) or the sharing or gifting of any prize with any other person; (iv) any printing or typographical errors in any Sweepstakes materials; (v) any problems or technical malfunctions (errors, omissions, interruptions, deletions, defects, failure to capture information or delays in operation or transmission) whether caused by Entrant, printing errors, human error or by any computer, telephone, modem, satellite, online system, server, or other communications equipment or provider associated with or utilized in the Sweepstakes, including any incorrect, incomplete, inaccurate, or garbled information resulting therefrom; (vi) any damage to Entrant’s equipment (such as a computer system or mobile device) caused by accessing the Instructables Site or participating in the Sweepstakes; (vii) miscommunications, or any failed, jumbled, delayed, or misdirected computer, telephone, cable, or other transmissions; (viii) any entry, e-mail, prize package or other material or correspondence that has been tampered with or that is stolen, misdirected, incomplete, lost, late, non-conforming, ineligible, or damaged; (ix) any failure of any postal or delivery service; (x) any other technical or human error that may occur in the administration of the Sweepstakes; or (xi) any events beyond Sponsor’s reasonable control. LIMITATION OF LIABILITY: NEITHER SPONSOR NOR ANY OTHER SPONSOR PARTY SHALL BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE SWEEPSTAKES, ANY PRIZE, OR THESE OFFICIAL RULES, HOWSOEVER CAUSED, WHETHER ARISING IN TORT, CONTRACT, STRICT LIABILITY, OR OTHER LEGAL THEORY, AND REGARDLESS OF WHETHER SUCH SPONSOR PARTY WAS ADVISED OF THE POSSIBILITY OF SUCH DAMAGES, AND ALL SUCH DAMAGES ARE HEREBY DISCLAIMED AND EXCLUDED.Disqualification: Sponsor reserves the right, in its sole and absolute discretion, to disqualify any Entrant who Sponsor determines, in its sole discretion, (i) has tampered with the participation process, the operation of the Sweepstakes, or affiliated websites; (ii) has acted in an unsporting or disruptive manner, to disrupt or undermine the legitimate operation of the Sweepstakes, or with intent to annoy, abuse, threaten or harass another person; or (iii) is otherwise in violation of these Official Rules, the Policies, or any applicable Laws. Sponsor reserves the right to seek damages and other remedies from any such person to the fullest extent permitted by Law.Termination/Modification: Sponsor reserves the right, at its sole discretion, to suspend, modify, or terminate the Sweepstakes at any time for any reason, including without limitation in the event of fraud or abuse, or due to natural disaster; equipment failure; civil disturbance; fraud; technical, administrative, financial, or other difficulties; technical problems (such as a computer virus/ bug); unauthorized intervention that corrupts the administration, security, fairness, integrity or proper functioning of the Sweepstakes; or other causes not within the control of the Sponsor. In addition, if, in the exclusive judgment of Sponsor, the Sweepstakes (or any portion thereof) becomes compromised in any way, Sponsor reserves the right, at its sole discretion, to cancel any method of entry, to void any entries submitted fraudulently, and/or to select winners from among all non-suspect eligible entries received prior to act that compromised the promotion. Should the Sweepstakes ever be terminated before the drawing, notice will be given on the Instructables Instagram page, and Sponsor will make alternative arrangements to award the prizes. Any such changes will become effective upon notice via online posting on the Instructables Instagram page or other means of wide dissemination.Use of Winner’s Information: All personal information collected by Sponsor (including without limitation, an Entrant’s name, biographical data, and city and state of residence) may be used for by Sponsor, or any third party chosen by Sponsor, of any and all information related to the Sweepstakes, including any personal information obtained through the Sweepstakes, for Sweepstakes administration, and other purposes, except to the extent prohibited by law. Without limiting the foregoing, by entering the Sweepstakes, each Entrant grants to Sponsor and each of its respective designees the right to use and publish the Entrant’s name, and state of residence, along with any other information provided by Entrant, both electronically (for example, on the Internet) and in print, in connection with the Sweepstakes at any time, except to the extent prohibited by law. By accepting a prize, the Winner acknowledges and grants to Sponsor and each of its respective designees, without additional compensation or consideration, notification or permission, the right to publicize his or her name, address (city and state of residence), likeness, photograph, voice, company name, and biographical material in any media now known or hereafter devised, throughout the world, in perpetuity, except to the extent prohibited by law. Other than as set forth in these Official Rules, Sponsor will treat any personal information supplied in connection with the Sweepstakes in accordance with the Policies. Please refer to the Policies for important information regarding the collection, use, and disclosure of personal information by Sponsor. License Grant: Any data or information included in entries must not infringe the intellectual property, industrial property, privacy, publicity, or other rights of any third party, and must be suitable for publication to a general audience (i.e. it may not be obscene, indecent, defamatory, hateful, or inappropriate, as determined in Sponsor’s sole discretion). By submitting an entry, each Entrant irrevocably grants Sponsor and its designees the unconditional, irrevocable, and perpetual right and permission, royalty-free, to use any data, information, images, content, or materials included in such entry, in any media now known or hereafter devised, throughout the world for any purpose. Sponsor is not obligated to use any of the above-mentioned data, information, images, content, or materials, but may do so and may edit them in Sponsor’s sole discretion, without further obligation, credit, or compensation. Each Entrant waives all intellectual property rights, privacy/publicity rights or other legal or moral rights that might preclude the Sponsor’s use of the entry or exercise of any rights granted to Sponsor, and agrees not to sue or assert any claim against the Sponsor Parties with respect to such use.Interpretation: The invalidity or unenforceability of any provision of these Official Rules shall not affect the validity or enforceability of any other provision. If any provision of these Official Rules is held by a court of competent jurisdiction to be invalid, illegal, or otherwise unenforceable, such provision will be modified by such court to the minimum extent necessary to make it enforceable while preserving to the maximum extent possible the original intent of Sponsor, and the remaining parts of these Official Rules will remain in full force and effect. Sponsor’s failure to enforce any term of these Official Rules shall not constitute a waiver of that term.Disputes: Except where prohibited, each Entrant agrees that: (i) any and all disputes, claims, and causes of action arising out of or connected with these Official Rules, this Sweepstakes, or any prize shall be resolved individually, without resort to any form of class action, and exclusively by the state courts located in Marin County, California and each Entrant irrevocably waives any objection to the venue and jurisdiction of such courts; (ii) any and all claims made by Entrant, and any and all judgments and awards in favor of Entrant, shall be limited to actual out-of-pocket costs incurred, including costs associated with entering this Sweepstakes, but in no event attorneys' fees; and (iii) under no circumstances will Entrant be permitted to obtain awards for, and Entrant hereby waives all rights to claim, indirect, punitive, incidental and consequential damages and any other damages, other than for actual out-of-pocket expenses, and any and all rights to have damages multiplied or otherwise increased. All disputes concerning the Sweepstakes, the construction, validity, interpretation and enforceability of these Official Rules, or the rights and obligations of each Entrant and Sponsor in connection with these Official Rules or the Sweepstakes shall be governed by, and construed in accordance with, the Laws of the State of California and applicable United States federal law, without giving effect to any choice of law or conflict of law rules (whether of California or any other jurisdiction), that would cause the application of the Laws of any jurisdiction other than California.No Endorsement: Nothing contained in these Official Rules or in any of the Sweepstakes materials should be construed as an endorsement by Sponsor of any third party, product, or service. Prize suppliers are not sponsors of the Sweepstakes.Social Media: The Sweepstakes may be advertised on or accessed through one or more social media platforms, such as Facebook, Instagram or Twitter. However, the Sweepstakes is in no way sponsored, endorsed, or administered by, or associated with, any such platforms. When entering the Sweepstakes, Entrants are providing information to Sponsor and not to such platforms. Entrants agree to comply with all terms and policies governing such platforms in connection with the Sweepstakes.Questions/Winner’s List/Official Rules: The name of the Winner will be posted on a post on the Instructables Instagram page or a dedicated page of the Instructables Site on or after December 18, 2019. The name of the Winner also may be obtained after that date by mailing a written request, along with a self-addressed stamped envelope, (Vermont residents may omit the return postage) to:Winner’s List – Instructables Maker Buddy SweepstakesAudrey LoveAutodesk, Inc.111 McInnis ParkwaySan Rafael, CA 94903All such requests must be received no later than six (6) months after the end of the Entry Period. Questions regarding the Sweepstakes may be directed to Sponsor at: service@instructables.com or (310) 396-1167These Official Rules will be posted on the Instructables Site during the Entry Period and for six (6) weeks thereafter. Intellectual Property: AUTODESK, and Instructables are trademarks or registered trademarks of Autodesk, Inc. in the United States and other jurisdictions. Other brands may be the trademarks of their respective owners. These Official Rules, the Instructables Site, and all other Sweepstakes-related materials and code may be protected by Sponsor’s or third-party copyrights or other rights. Copying or unauthorized use of any copyrighted materials, trademarks, or any other intellectual property without the express written consent of the owner is strictly prohibited.

Topic by audreyobscura  


How do I fix my jukebox? (1976 Wurlitzer Baltic)

Hello, lovely people!I have a 1976 Wurlitzer Baltic jukebox that has started to misbehave. The needle arm lowers, then jerks slightly, coming down pretty much in the middle of the song, then at the end of the song, the arm is supposed to raise back up, and the record should be returned to the carriage, but now it's stopped doing that.I've spoken to a couple of jukebox servicing-type-people and they've said it'd cost more than the jukebox is worth to get it properly serviced and fixed (it's not a popular model), so I turn to you guys. I'm happy to do the work myself (if possible), but I want to properly understand what's actually wrong with it before I start poking around and potentially making it worse.Some sub-standard video of the the problem here and here, and I've included the only copy of the service manual I could find. Before it came to me, the jukebox lived in a student union bar for many years, so I imagine it wasn't particularly well taken care of. I love this machine very much, and I hate that it's become basically unusable. Any advice or help you can give would be very gratefully received.Many thanks in advance,Kath

Question by wakefiek    |  last reply


How do I make a circuit that acts like a set of radio buttons, i.e only one LED can be selected at a time.

I'm trying to make a timing light for use in toastmasters and would like to know of any IC's that can help me out. I've already come up with 2 possible solutions, but both seem more complicated than necessary. All I want is to have 3 LEDs with 3 associated push buttons. Any time an LED is selected via a button, any LED that was already on turns off, so that only one LED is on at a time. A rotary switch would be perfect for selecting one LED at a time, however I am looking for a low profile solution, and also something that can be used with one hand while attached to a small light weight device. It seems like there should be an IC for this, but I don't have much experience with them and don't know what this functionality is called. Any advice is appreciated. Edit: I'll also mention that I'm looking for a solution under $50 and that uses parts that I can source locally (both possible solutions mentioned above meet these requirements so I'm not very flexible on this).

Question by NoFiller    |  last reply