Topics


Can I make a pro/con list Instructable?

I would like to know if I can make an Instructable on the pros and cons of a microcontroller, the Basic Stamp 2.I would also include setup and (hopefully) the blink code.Thanks, g3holliday

Question by g3holliday  


Can I charge an Electric Scooter with a portable battery?

Okay so the first question is, could I charge an Electric Scooter while it's in use. The Scooter in question is a Bullet XCT 85, which from what I can tell is a Xiaomi M365/Pro Knock off.While I have it plugged in and charging to the wall, I can still turn it on and use the throttle, whether it's still charging (as the wall charger would indicate) or the scooter has safe guards to stop the charging from happening while it's powered on, I got no clue.Second part of the question is, the scooter supposedly (I haven't and don't want open it up to check) has a 36V 7.8Ah Battery. So with that info would I thearetically be able to put together a battery of also 36V and different Amps to either 1. Charge the scooter on the go or 2. Have a battery back up, for when I haven't got access to a wall charging option.As for the extra battery, the current idea for cost vs. capacity is get 3x 12V 9.8Ah Li-ion Batteries in series to make a single 36V battery, with the right plug on the end to plug into the scooter. And possibly some sort of battery meter to be able to read the battery level.Side Note - I don't have any electrical knowledege, besides the basics. But I'm a quick learner.

Question by NicolasR46  


Why does the printer not receive print job ??

My printer does not accept print jobs, I do not know how to fix the problem. I rebooted but it didn't work either?

Question by chinchin987  


Pressboard Pallet Repurposing

My workplace receives shipments on pressboard pallets. We collect about a hundred a year, and can't even give them away. Can anyone help me figure out some good ways to repurpose them? Thanks, Jorge

Topic by m_jorge    |  last reply


How to Build an Electo Pounce

Was looking to see if anyone has an idea how to make one of these electro pounce machines. At $300 new I'd much rather make one but don't know where to start. Any electrical peep out there have an idea, please let me know. Thanks here's a reference of what the machine is - you tube has videos of it in action. http://www.fmsneon.com/electro-pounce.html

Topic by jae1    |  last reply


Can I use single 24vDC power source to feed two 24v audio amp boards?

I have a audio amp board with no bluetooth so i want to add a bluetooth audio amp board to it all on 24vDC power supply but one board just blips on and off. Thus making a popping sound. Ive tested on separate power sources and seeems fine. Am I wiring wrong?

Question by Msala87    |  last reply


Fixing a mosquito bite quickly!

You suffer for days after one of these tiny vampires got you?The itching drives you mad?And unlike some people your bites always get worse from day two onwards?If so, then you might have the same problem as I have...No matter how much hate and disgust you show, these mozzies just love you.And as this wouldn't be bad enough your body totally overreacts every time.A bite for me meant numbing cremes or sprays, anti-histamines and if doubt putting a heavy duty bandaid over it so if I forget the scratching won't do too much harm.Despite all this 5 to 6 days until the itch, swelling and irritation stop...A few weeks ago while fishing I had a nice chat with a man way into his 80's already.He laughed when I started to spray all uncovered parts of my body with tropical strenght insect repellent.Told him my reasons and then he said I should try something he used during his army times for bites of unknown critters.In the jungle they often relied on local guides and they provided a solution that seems to be totally forgotten these day - even I did not know it LOLTheory behind it...If you know these "insect bite clicker" then you already know how it is put into comercial use - without ringing much relief.Whenever something bad enters the body there is a reaction to fight it off or dispose of it.Problem with insect bites, be it mozzies or sand flies, is that all this bad stuff is concentrated in a very tiny area.And being mostly skin tissue makes it hard to deal with it.By applying pressure and massage like motion to the bite the contaminent are spread through the tissue.If you leave a small dint with little to no color left after 2 or so minutes you doing it good.Try to use something hard here, like a spoon, bottle cap, end of a screwdriver - whatever is slightly rounded and solid.You will notice that the itch gets quite bad once the bloodflow starts again and within minutes the bite area will swell up and form a more or less evenly formed hump.The hump will be pale in color while around it the skin is slightly red from the added bloodflow.Don't scratch! Just wait until a nice hump has formed where you can clearly make out the rim.Now use the same pressure method as before and spread out the hump while constaly pushing it in and "wobbling" around to massage the area a bit.Do this as before for about 2 minutes and if you still see a destinct difference between bite aea and surrounding tissue continue for a bit longer.Should not take more than 5 minutes to have the area nice and even again.Wait again and check for new singns of swelling up - there should not be any.If there is simply repeat one last time.The remaining itch will go away within about an hour instead of days and there won't be any severe after effects from day 2 onwards either anymore.It can help to use heat as well.For example by heating up the spoon in some hot water before using it.But keep the heat at a level you can tolerate!!! Do not heat the spoon to the point where you feel pain from the heat.Try it out and report back! :)

Topic by Downunder35m    |  last reply


Heating a winter garden pond with a car pre-heater!?

Anybody thought about heating a winter garden pond with a car pre- heater!? Here in the UK garden pond fish get really cold and more often than not ponds freeze up. Would you budding geniuses give this topic a little thought - would it work in a controllable manner?Thank you.

Question by TN1946    |  last reply


Cutting PVC Pipe - Lengthwise for guttering

Ok, here's one I thought I'd throw open to the masses.... I'm knocking off the last of a fully automated self-sufficient watering system that runs completely off grey/rainwater. However, the coke can guttering is not working in this position as it has previously :(  I was thinking of using PVC piping, cut lengthwise for guttering. However, I'm working out the logistics of cutting it. It can't be cut directly in half - this would be too shallow to catch the runoff from the chicken shed. and funnel it down to the tanks, so I'm looking at removing a chunk of the top.  And I also have no table saw. Wheee. What I do have Dremel (x2) with associated cutting wheels Jig saw (With associated plastic cutting blades) Circular Saw Mitre saw Hand saws (tenon, crosscut, hack, pruning, etc) So, here's one that I'm throwing open. With the tools I have, how would you do it?  I'm leaning towards the dremel, but there would probably be issues with maintaining a straight line (not that I care about some warp, it's a gutter)   Ideas? *EDIT*  Ended up using a jig saw with an acrylic cutting blade. Worked a treat.

Topic by taleya    |  last reply


A 5 gig file won't fit onto an empty 16 gig flash drive?

I have a 16 gigabyte flash drive that's relatively empty (13.7GB free space), and I was trying to put a 5 gigabyte .ISO file onto it.  However, when I try to copy the file to the flash drive, I get an error saying there is not enough space to put the file on the flash drive.  I know this is not true because I have over 13 gigs of free space. Is there any reason for this weird error and is there any fix? This is kinda important.

Topic by DJ Radio    |  last reply


Can portland cement be mixed without sand or gravel?

I'm planning to switch from wood to cement because we are soon moving into a condominium where noise should be kept to a minimum. If yes, what is the ratio of water to cement? if no, can i mix it with sand only and what is the ratio. Thanks

Question by beehard44    |  last reply


Clean a computer mouse

I recently mad an instructable and entered it into the contest. i am pretty sure it met the requirements of the contest. check it out and comment either on here or on the instructable itself if you think there is any reason for it not being accepted yet. https://www.instructables.com/id/How-to-Clean-a-Computer-Mouse/ it might be still pendin but im not sure

Topic by EPL    |  last reply


Need help in identifying connections for CNC board?

I need help please anyone. I have bought another CNC shield recently, goes by the CNC Shield ver 2.7 name. The board has www.lubandiy.com printed on one corner. There are 8 optical isolators on the board for the limit switches and a socket for a Nano. Also there is a heavy duty hexfet near the laser connections. I am not able to find out much about this board, even though I have asked the seller and even a few other sellers that are on ebay. I went to the website as shown on the board, but it is all in Chinese and after trying to use Google translate was still not able to find out any further information. The board looks well made and seems to have a lot of good features, but lacks the needed info to be able to put it to good use. I am not sure if the board has a laser TTL built in or not, it is possible due to the hexfet being there,  There are two heavy duty connections (two pin each marked + - ) and a small connection with a xh2 socket that could be for a laser or maybe a fan.  Can't get any further info on it. If anyone can help with info, please let me know so I can start to use the board with my machine build. I have managed to program a Nano with GRBL 1.1f and it works OK when testing the board on a dry run, no motors connected or laser.

Question by regpye    |  last reply


How to make a kiln that works on gas an oxygen?

To produce a temperature of about 2000c how can one make a kiln at home? What are the raw materials needed?

Question by JilM3    |  last reply


How To Create Frequency Specific Microcurrent?

Curious if some of the electronic gurus might have the answer to this. I am looking to build a two channel (A/B) microcurrent (allowing from 20 - 600 microamps) with selectable frequencies ranging from 3 to 970 Hz). This is based on a medical device that I'm looking to replicate. I've figured out some of this but again, considering the wealth of knowledge here I'm sure some would know the best way to build this. Oh yeah, I figure using a rechargeable battery which could be whatever voltage is best recommended. So what do you think???

Question by pletchman    |  last reply


How to wire a 12v motor and limit switches to raise and lower a satnav panel in my car,using the ignition switch circuit

Hi, I'm trying to understand in a simplified diagram how to use a 12v motor to raise and lower a panel in my car,the hardware I can make fairly easily but it's the wiring I'm struggling with,I understand that 2 limit switches have to be used to stop and start the motor,also that the polarity of the motor has to be changed to raise and lower the panel, I also want to use the vehicles ignition switched circuit to raise and lower the panel as opposed to using a rocker switch, Any help in this matter would be greatly appreciated, Kind regards, Darren.

Question by Rallyingace    |  last reply


How to reduce noise like baby crying in my home office so I can work on the telephone from home?

I will begin telecommuting and I have a 2 month old baby and a 2 yr old.  A noise cancelling mic will reduce some sound but I want to make sure customers can't hear my household noise coming from other parts of the house.  What can I do to reduce sound to the home office I set up in the extra bedroom?  I am in a rental property and cannot make permanent structural changes.

Question by Rasheeday    |  last reply


What is this hand tool? Answered

Got this tool with a bunch of other tools. It has some markings related to machine screws. Any help will be much appreciated.

Question by bageldoy    |  last reply


Where can I find my subscribers and my subscriptions?

Hi there,I was wondering where I can find the list of my subscribers and the one I am following? It seems that the old instructables.com/you/subscribers ist not working anymore...Can someone please help me, thanks a lot.

Question by sun.  


Position lock free stop seam type hinges

I am working on mechanical hinges. It's a case design for mobile along with hinge.i need some input regarding position lock seam hinges like the one shown in attached images/i am designing this case for ipad/tab.How exactly these hinges works ? and i need internal 3d model of these hinges? how exactly it look from inside? and what is prefered manufacturing method for making these type of objects ?

Topic by adityay17    |  last reply


How can I recover data from a dead external hard drive?

I have a 2TB external hard drive with lots of stuff on it Recently it stopped working and now I cant access it I have tried it in many computers but they only ever find the SATA to usb bridge which connects the hard drive to the computer I have also tried some hard drive recovery programs, some of them find the hard drive but when they scan it, they find nothing Does anyone know of a good, working, reliable hard drive recovery program (free if possible) or any other way to get the stuff off of it Thanks

Question by Jareadx    |  last reply


How to Slow Down a 240Vac Electric Motor?

I bought a small, industrial motor and want to safely slow it's rpm.  Does anyone have any advice as how to best go about this?  I've looked into gearing and found this to be quite complex but understand that an alternative option may be to change the voltage received by the motor?  Thank you for any help you provide

Question by ambrosiaceae    |  last reply


Rex C100 temperature controller - changing settings

I recently ordered a REX C100 for my electric melting furnace project. As it came already with a SSR and temp sensor I only added a sensor capable of reading more than 400° of the supplied one. These controller are dirt cheap and have lots of support in the modding community - although you now can get them new in all variations so no more modding required. Internally they run on 12V DC, so even mobile use is possible (but this time after modding). My problem with this controller started with the not included manual. As it is no China clone but an original from RKC Japan, I downloaded their manual and tried to adjust the max temp settings as well as changing to the thermocouple. To my surprise the menus for that simply did not exist on my model. Reading a few more manuals showed that to get to the "initial or factory setup" you need to change the lock code. Here things get confusing: Once in the lock menu setting most manuals state to enter "0000" to activate the hidden menus. (Mine was alreay on 0000) Others state to set the code to "0100". In any case you have to hold the setup key for a few seconds to store the changes and after that hold the settings and shift key for about 5 seconds to enter these factory menus. After being close to send the unit back I tried different code combinations and finally found that "1000" actually activates the hidden menu on my model! But again there was no joy as several vital settings still did not show up. To finally get all settings another step is required: The first item in the hidden menu is "CODE" and it shows as "0000". After changing this to "0001" the setup key can be used to get to the settings to change the max and min temps. Once all this done the controller actually shows the selected sensor and if Celsius or Fahrenheit is used at the start and from now on simply by clicking through the hidden menu with the setup key you can get to the min and max temp settings again. I hope this info will help someone running into the same brick walls as I did...

Topic by Downunder35m    |  last reply


Problem With Virtualbox; Not Enough Space Error When There Is 200GB Free.

I Bought myself a Lego RCX for Christmas this year... I wanted to use it with my windows 10 PC, after inserting the software disk(s) and realizing that it was meant for windows 98 and it won't work on my modern PC I went ahead and installed virtual box and ran windows XP on it. I installed the Lego software (which installed without any problems) but when I tried to launch it there was a "Not Enough Disk Space Error" Even though the virtual hard drive has 200GB free. Any Ideas?By the way, I tried the "Emulator" that is built into windows 10, it also didn't work (The one were you go into properties, compatibility, and change it to windows 98).I Also tried Windows 98 in virtual machine, when I launched it there was no "Not Enough Disk Space" errors, but there was a error that said something along the lines of "this program requires 800x600 resolution minimum" When I went into the control panel my resolution was 640x480, and I couldn't move the slider to make the resolution higher for some reason.And I do not want to use any of the other programs for coding the RCX (Bricx command center, etc).Any Help would be appreciated!Thanks.

Question by Lightwings_17    |  last reply


Box Fan Wind Generator

Is it possible to make a home wind generator from a box fan?

Topic by elkaddalek    |  last reply


Microsoft Photodraw - does anyone use it any more?

I have Photodraw 2000 on my computer from several years ago - I copied it onto my newer computer and I use it all the time to add text, borders or effects and to correct old photos or erase backgrounds.  I use my photos for various purposes, for teaching and family use, so it's good to be able to do lots of things with the photos in just one simple program I love Photodraw- it has so many uses and is easy to use. I never got the hang of using layers as in paint.net (which I've tried ) and Photoshop (which seems so expensive and complex). Does anyone else still use Photodraw or am I hanging on to a dinosaur here?

Topic by Puzzledd    |  last reply


NEED help understanding Circuit board & Wires ?

I have 2 Mobility scooters with similar circuit boards , one has 3 more items connected thru the circuit board where as the other one has those 3 items in the fiberglass body on the tiller . One has the Ignition wires as B+(SW) and B+ as the ignition wires on the bigger circuit board , And the other has B+(SW) but no makings on the circuit board that says B+ ( but it does have B- ) , Both scooters have Curtis Motor Controllers 1203A,But it says in the Curtis 1208C manual that The B+(andB-, if applicable ) wires supply power to the throttle control panel ----such as for the key switch ---- should be bundled with the remaining throttle wires so that all these wires are routed together .i've enclosed some pics and hope some one can help ..Below are some pics describing the 2 Circuit board set ups for the same scooters hope some one can enlighten an old brain (that's slowly fading )Kindest Regards in advance Gordon

Question by GordonP9    |  last reply


LED's How do you make 150 x individually addressed LED's flash?

Hi,I am trying to get a project started that requires up to 150 x individually addressable LED's. Each LED needs to be programmed to flash individually. Ideally the project would be controlled by an Arduino or similar and would be battery powered as it needs to be portable. The whole system needs to be operated with a simple On/Off switch.The flashing sequence for each LED is critical so if a piece of software is available to easily set up and control the flashing sequences, then that would be a big bonus.The LED's will be mounted in pre-drilled holes on a large sheet of plywood. Each sheet would then need to be repeated to build up an array of sheets. Any help would be much appreciated.

Topic by NathanD115    |  last reply


Sd card data logging from keypad with arduino

Hi all, i am very beginner in arduino and programming . but also along with that i have successfully practicing and successfully complete some of the project following this community . now i want to make another project . i want to make a numeric door lock 4*3 pad if someone press the correct password it will open but if someone press the wrong number it will save the password with date and time stamp . is it possible then please suggest me what are the parts need for this project and if possible guide me to write the code . thanks

Question by JahanAnsari    |  last reply


Mercury??? Answered

Well i have seen some "places" that sell mercury (dont ask me where), and I was wondering what would someone need mercury for, other than making a thermometer?

Question by bwpatton1    |  last reply


How to make a sensory book for toddlers?

How to make a sensory book for toddlers?

Topic by shrikrishnasawant    |  last reply


Wifi chipset to USB

I have a wifi chipset that I want to connect via USB. Spent ages trying to figure out the easiest route but no luck. Any help would be appreciated.

Topic by RyanZ25    |  last reply


Adjustable Bridge

I have an Epiphone acoustic guitar that I really like, my girlfriend gifted it to me after her uncle gifted it to her (she doesn't play, fingers are too small). It's the FT-130. It basically has two large screws, one on either side of the bridge, If anyone is familiar with this style of adjustable bridge can you please either tell me how to use it or send me a link to a site that will? the action is pretty low on the high strings and I'm getting a lot of buzzing (more than I should). Thanks for any help you can give!

Topic by HAL 9000    |  last reply


Super caps to power an automatic putter

Hey guys!I'm looking to build an automatic putter with a solenoid from a old starter motor and some super capacitors.I've figured out how to triangulate the distance using a servo and a pair of lasers but I'm at a loss on how to charge them and the math behind it to make sure that the right amount of current goes through.The basic plan is to either wire up a series of the caps listed above and hopefully charge them in series. OR buy a car booster pack and disassemble it for the bits and pieces. OR use a lipo like this and hope that the discharge is enough to hit the ball down the course.Any thoughts or suggestions on some reading meterial?I'll be doing an instructable at some point and will give some cred to the best answer

Question by Wired_Mist    |  last reply


Using solar salt instead of washing soda

Can I use solar salt instead of washing or baking soda for electralisas

Question by luvsjuicypuss    |  last reply


Need help to fix slow running Air conditioner motor?

The motor in my central air conditioner runs slow. I have replaced the control board but motor is still slow. I checked the motor by directly connecting it to a power source and it operates at normal speed. It's only when I connect it to the control board it runs slow. What is causing the motor to spin slow?

Question by dasarm706    |  last reply


Rc transmitter and controller.

Hi Guys I'm ne to the rc world and I was just wondering if I lost my rc receiver would that completely deem my transmitter as useless or can you just purchase a new receiver. Many Thanks in advance.

Question by chris.france2008    |  last reply


Surface Pro adapter modification

Hi guys, I have been experiencing problems with my Surface Pro adapters (both original and "OEM") where the adapter would power up the tablet but simply won't charge. I decided to probe the connector prongs and found out that the adapter simply outputted 12 volts (and supposedly 2 amps) through the pins. Since both adapters simply supplied 12v to the prongs, can I replace the adapter with a 12v 3a one while keeping the original cable?

Question by FarieI    |  last reply


How can i code an accelerometer adxl 345 in arduino to correct posture?

I working on arduino nano,using an adxl345 accelerometer,with a button and a vibrating motor. I want to code this system to save some values recorded by adxl 345 when posture is correct by pressing the button and when posture is incorrect, i want that vibrating motor to vibrate. Pls help... i need help just with coding, not with hardware part.

Question by pitzu.kage  


what is this? identify my tool!? Answered

I had this for years, anybody got a clue what it is? most amusing answer gets a patch:-)

Question by crazyg    |  last reply


Deactivated Bone Growth Stimulator

I have a CMF bone growth stimulator that no longer works. These devices are set to die after so many uses. Does anyone have any ideas on how to reactivate these units? Or, hacking these things for another purpose?

Topic by wmlaveck    |  last reply


Arduino Dying out!!

Hello, I bought an Arduino about a year ago, and just now I noticed that whenever I plugged it into my computer, it turns on(of course), but then it slowly dies out. Can anyone help me diagnose this problem? 

Question by vek11    |  last reply


Why has nobody found a way to power a vehicle using magnetic energy? Answered

It seems like such a simple solution, yet nobody has attempted it yet. Why? The force put off by magnets is basically free energy, right?

Question by annchanted    |  last reply


Can anyone identify this jawbone? Answered

Found in Tasmania , any help appreciated. I can't think of any animal native let alone foreign. Tusk or why is very sharp almost arrowhead like. Any help appreciated.

Question by incer3    |  last reply


Different grinders of the Dremel. What to use? Answered

I use a dremel-clone. It has a set of grinders of three colors: blue, red-orange, and pink, the three in the same set. I can't see differences in hardness, but it must be differents, so... Can you help me in what color use in which task? Thank for your time!

Question by infob    |  last reply


Is there an easy way to find a short or open circuit in a car?

I am trying to find a open or short circuit that is on a wire which is in a harness with other wires, on a 1986 Mazda B2000 truck. With so many of you having expertise in electronics, I thought here would be a good place to post my question. Does anyone have any suggestions how to find this open or short-circuit?I am open to the idea of getting a short-circuit-finder. Though I am not sure what features I should look for if I decide to get one. Does anyone have any suggestions?a) Does anyone know if these work well?b) What features should I look for If I get one?c) Do you have any other on a short circuit finder? type, manufacturer, model etcBelow is a link to a site that uses a short circuit finder to find a short circuit, and has information on using one: http://inliners.org/tech/tech6.htmlBelow is a link to a site that tells about how a tone generator is used to find a short circuit, in a home environment (I think this is how most short circuit finders work): http://askville.amazon.com/tone-gene...uestId=5912724I found some links that seem to show that it is possible to make a signal generator and tracer, but the pages with the schematics would not load. A list of tools with links to tools and their schematicshttp://www.qsl.net/kc4gzx/kc4gzx/project20.htmCircuit tracer (neither of these would not load 4-3-09 kept getting message "the Connection was reset."):should have schematic:http://circuitos.tripod.cl/schem/r111.gifand the signal generator:http://circuitos.tripod.cl/schem/r25.gifA little paranoid voice thinks this Instructable has some clues to the solution: How to prevent thefts steal your motorcycle for less than US$ 2 Thank-you in advance,

Topic by Jonque    |  last reply


What is the microcontroller that can i use to make humanoid robot ? Answered

I want to know what the microcontroller that can i use and i wish if it is arduino because it will be easier for me to get it .

Question by marwan97    |  last reply


Is there a way to fix a binder ring that doesn't fully close? Answered

I think that we all have had to endure the annoyance of a ring on our binder that doesn't fully close. I am becoming quite impatient with the fact that every time I try to close my binder one of the rings is the slightest bit unclosed and my paper end getting very jumbled. PLEASE HELP!!!!                                

Question by happyjo    |  last reply


How to connect L293D with 4 motors, 1 stepper and 3 leds and arduino uno?

I would like to connect 4 motors without speed control, 1 stepper and 3 leds and I don't know how to connect it with the L293D shield.Can anyone help me?Thanks

Question by vcbelmar    |  last reply


Need help designing a counter circuit. (I don't have a lot of experience designing circuits)

I am currently designing a counter circuit, however, i keep running into issues and a point in the right direction would be greatly appreciated. Components I want to include: - a 7-segment display and 4026 - a PICAXE and/or a 555 IC (the PICAXE would be used to turn the device off without resetting the 7-segment display) - an LED to show that the device is on - three switches: one to reset, one to turn off/on the device and one to add to the count - possibly a piezo buzzer to read the count on the 7-segment display (?)I have attempted to make this circuit (it is attached) but did not get very far. Again, any advice would help, thanks.

Topic by Spencer001    |  last reply