Workshop Topics

Nuclear Reactors and Batteries

Hydrogen fusion is a promising source of energy. They have made fusion reactors already. Though they aren't going to supply our energy needs because they consume more energy than the make. Fission reactors have been already made and are good at making energy. Unfortunately they have dangerous radioactive byproducts and wastes. Please post anything you want as long as it has something to do with nuclear reactors.

Topic by Masterdude    |  last reply

Where can I get large( diamter larger than 3 feet) plastic pipe and how much would it cost?

I need some larger plastic pipe that I can use for a tunnel. I am looking for something that is larger than 3 feet wide becuase I want to use it for a tunnel. Preferably it is not to expensive.

Question by workinprogress37    |  last reply

XY plotter for artistic project

Hi everyone,I am a french artist, and I am starting a new project that involves some robotics and programming, parts for which I need some help.I am planning on buying this machine : to use it as a pen plotter, trying to get the pen to behave as one of the particles visible on this site: want the pen movements to be generated directly by the code of that simulation (which was shared with me by the creator).My first question would be, does this seem feasible? There seems to be some issues working with this particular machine on a Mac, so I wanna be sure that I buy the right tool for the project before even jumping into the programming phase.Thanks!

Question by Adrien_Blondel    |  last reply

Tree moat digging machine need help

I am needing to dig tree moats around 150 trees in an orchard. We use flood irrigation to water them. Each tree has a sprinkler head. I am needing to build a moat around each tree to keep the water near the roots. As of right now we are forced to use a hand hoe to make them. On some spots i have to use a shovel to break the soil up before I can use the hoe to make the moat. Does anyone have any ideas on a machine or better process to make them? What came to mind was a trench machine or some kind of disc harrow. The problem with the trencher i see is they are made to go forward and not side to side. The moat are not that deep maybe 5-7 in deep. A photo of one i dug by hand as an example.

Topic by AlexT352    |  last reply

Colors on tungsten by anodization? Answered

I want to make tungsten rods in colors. As it is possible to have titanium in MANY colors by simple variation of the thickness of oxide-layer, i wonder if the same is possible with tungsten. Somebody tried it already? What are the voltage-ranges for nice colors?As references:

Question by Orngrimm    |  last reply

Identify a Signet Ring? Answered

My grandmother gave me a signet ring a week ago, and I was wondering if anyone could help me identify the coat of arms on the front of the ring. I don't know what metal it is made from, and there is no visible hallmark that I can see...

Question by ObsidianBlush    |  last reply

Giant Lazy Susan for acrobatics.

I do something called Partner Acrobatics. If you want to see what it looks like here is a video.This is me and my girlfriend. I got my Mavic Air to rotate around us which was pretty cool but for my next project I want to put her and I on a motorized lazy Susan. Then I could have a stationary camera and Debbie and I spin. I have looked for some sort of large lazy Susan which I could just buy and use right out of the box but so far have not been able to find anything. I will have to make something and I don't have a lot of fabrication experience. I was hoping people in the instructable community could put me in the right direction. I have tools: table saw, skill saw, routers, hand tools, etc. I need a finished product which can hold at least 400 lbs. I want the lazy susan to be turned by an electric motor. The speed needs to be variable because some moves and slow and others fast. I want to get an effect where the base spins and the flyer is still.

Topic by Noblenutria    |  last reply

Using a solar panel as a dusk til dawn sensor?

Someone on my youtube channel commented that you could use a solar panel as a dusk till dawn sensor. Let me explain the scenario. I used a solar panel to keep a battery topped up, which was wired with a digital timer switch to operate an automatic car antenna. At a certain time of the day, it would extend, and then at night, it would retract, according to the timer I programmed. So enter this person's comment:Can I just say, you don't even need the timer. Use the load outputs from the charge controller and the door will open as soon as sun hits the solar panel and close again at sunset.. The charge controller has the timer function already built in.Now he is obviously referencing a charge controller, which is NOT part of my set up. The solar panel I use has built in overcharge protection, so no need for a charge controller. Can someone tell me what he's referring to, or how to wire it? Would I need a different solar panel? Because the one I use doesn't play well with a charge controller. If I attach the solar panel to it, it doesn't charge the battery.Thank you to anybody that can help.

Question by beoirsicnarf    |  last reply

Can I use a AC switch in my DC project? Answered

I'm trying to install LED lights in and around my car. Can I use a AC switch in a DC circuit/system? The AC switch is rated as 10A 125V AC / 8A 125V / 4A 250V AC / 1/3 HP 125V AC. I plan on putting the switch between the 12v DC car battery and the 12v DC to 5v 5a DC regulator (which then powers the microcontroller and LEDs). Is this doable and safe?

Question by anuvanoob    |  last reply

Issues with maxim7219 drivers?

I am trying to connect 12 maxim7219s in a daisy chain and am having major issues. Right now I have 7 in the chain and random maxims just randomly don't work (right now, the last two and second one doesn't even turn on). Does anyone have experience with these chips? Can anyone share their experience with them or recommend something better?

Topic by NusifGomes    |  last reply


Hai... I need some solution... I'm not a electrical engineering... so, there are 5 unit of 3 phase wind turbine, with rate output up to 2Kw, 48V each... and I need to produce current load for home about 7Kw to 9Kw, 240V,,, so, how to wiring from 5 unit of wind turbine to home current...sorry for my english and thank you...

Topic by zeak1975    |  last reply

Can anyone help me find some parts so I can make an industrial barn type light for outside my house?

I'd like to make a lamp like this for outdoors: conduit, flange, junction box, and outlet are easy. I can't find anything I can use as a shade, I was thinking maybe there would be something that I could repurpose to make the shade, rather than buying one for $$$Does anyone know something like a wok, or some sort of dollar store metal salad bowl or anything like that which could be repurposed for a lampshade? I'd prefer aluminum for obvious reasons, but not opposed to steel either as long as I can paint it.

Question by JimTheSoundman    |  last reply

How to program a small electric motor? Answered

I want to start a small simple vending machine project, yet its not clear to me how can i program a small motor to respond in a certain way when the relevant events are triggered, i mean what are the hardware necessary for me to be able to comunicate with the actuator (the motor), and which type of motors are best suitable for such projects? Thnx!

Question by Sanousi    |  last reply

Cfmoto 650 - possible options to derestrict the Australian model

When it comes to motorcycles with restrictions then Australia seems to be pretty much alone in the world.Despite an abundance of bike to choose from that would fit weight/power limitations it seems to be common to go overboard here.As a result basically all popular motorbikes up the 650ccm hit the AU market in a restricted form if they don't match the limitations by default.For someone in the US just reading this might sounds like a useless concept to get people to learn how to ride a motorcycle.As a fully licensed rider and being on a budget a bike for just over half the price of a Japanase model is still tempting.And for general touring use the MT is actually quite a comfortable bike.Big downside is the impossiblity to get certain bikes in an unrestricted form.For the Cfmoto's of the older type, running the Ducati ECU it is as simple as adding a suitable fuel/ignition tuner module and removing the physical restrictions.The newer models from 2017 onwards use a more reliable Bosch ECU though.With them it is appearently possible to use BWM tuning module but with the requirement to do a full remap on a Dyno.The 2018 MT is my bike, so I will focus on this, but the gerneral things are identical on all the Cfmoto 650 models.A word on the legal things first....Outside AU none of this concerns you as your Cfmoto will come unrestricted anyways.Within AU however we are subject to several laws that make the legal modification of a so called LAMS motorcycle virtually impossible.You can even put a different exhaust or airfilter on them without risking to loose your license and get some hefty fines.As a fully licensed rider however the law often turns a blind eye on these things as they don't really matter as long as they won't affect the safety of the bike, rider or other road users.With the plated riders out for now, let's focus on the options for a fully licensed rider, shall we?There is no need for a RWC or anything if you already owned the bike in the LAMS version.But if you try, for example, to go to Vicroads and have the registration details changed to reflect that the bike is now running with it's full factory default power, or a bit more you are lost.Two reasons for this.Firstly Cfmoto did not bother to import and register for road use any unrestricted version of the 650's.Secondly the VIN number and engine number are fixed in a database for LAMS only bikes.You would need a full engeneering certificate to register the bike in any modified version that affects the power output or reduces the weight of the bike.Sets you back about 10.000 dollars and still won't garantee that Vicroads actually transform it into a legal, unrestricted bike.The police has little to no interest in what a fully licensed rider does to a bike - within the usual limits of course.And since you would not sell the bike without fully reverting it back to the LAMS state the risk of prosecution can be fully minimised:If your insurer agrees to provide full comprehensive cover once the bike is (properly) reverted to what the international models are it is down to serious accidents that might still cause trouble.For example when you cause severe injuries to someone else the bike would be checked for modifications that could have had an influence on the accident.My insurer explained it like this:If the bike is checked roadworthyness after an accident it would fail because it is no longer LAMS compliant.That would automatically default the rider to be responsible for the accident even if not at fault at all.With that it is mandatory to have all the details about the modifications listed and validated in the insurance policy!Adding a tuning module for example would mean providing a fully Dyno chart with a safety confirmation from a licensed vehicle tester.For example the confirmation would state that a power Commander with Auto Tune module was installed together with a slip on exhaust system.Bike specifications allow for the save use with said modifications based on the results of the Dyno runs.With that the rider is put back into legal territory as the insurer stands for the roadworthyness of the modifications.It certainly helps to just stick with the default options and to provide the Cfmoto cert copy from the same international version of the bike.A plated rider should never attempt any of this as it still means there is no way to get away - legally and financially!Possible tuning options for the LAMS versions:Adding one the usualy tuning modules is not only pain but also costly if done properly.Being a LAMS bike you will have a hard finding a reputable shop to install a tuning module for you.Doing it yourself can be tricky, especially if you consider that the default wire colors are often different on the bike.Takes a few hours to check the wiring diagram, follow and measure connections and then to finally risk starting the bike....It works though if you know what you doing.Biggest downside is that you won't find any ready to go maps that you can use.And trust me trying to modify fuel or ignition maps yourself is not for the faint of heart and only an option if you a) know what you are doing and b) have the tools for it.There is a good chance the bike actually runs worse than without the module.Now the obvious solution would be to go for some Dyno runs and to have it all setup properly.Again, with a LAMS bike you will have a hard time finding a licensed and reputable shop to take your bike in.If you find one that does it anyway than it really is best to go for the full package and to suck the costs up.Let them supply the required modules, sensors and all, deal with the airbox and throttle limiter.Then have the usual 3-4 Dyno runs to get the mapping done properly.This approached worked perfectly fine for the older bikes using the Ducati ECU.The new models with the Bosch ECU might still struggle to accept the tuning changes.Reason for this is the checking of literally all sensor informations.Means the tuning module must cater for this and not just fool the O2 and TPS sensor readings.Just removing the throttle limiter and airbox restrictions will cause the bike to run too hot very quickly and also puts your ECU into a lean default mode once you see ECU errors flashing on the dash.Real tuning options that won't have a chance to harm the engine:With all models available internationally and without any restrictions it is relatively easy to find a wrecker in the US, EU or even Asia to supply parts from crashed bikes or those confiscated for destruction by dismantling them.If you are a fully licensed rider and after a bargain or love your first bike so much that you want to keep it once the plates are gone:Organise the ECU, airbox and throttle body from any part of the world except Australia.Sometimes you even find them on Ebay so pay attention to the sellers home country (some AU sellers go international and would then just get the same what is already in your bike ;) )!!Why not just the ECU you ask?Our airbox has added restrictors, just removing is not the best option as they are also responsible for causing required turbulences in the airflow.A straight through or even pot filter option would again require ECU tuning.As said, talking stock here...The throttle body might not be required to get the full power the bike is intended for but you never know for sure.If in doubt pay a few bucks more and have the injectors and sensors included as well ;)But why would I want to pay for a throttle body if it is not 100% certain I would require it?It would'n t have the screw hole for the throttle limiter ;)This tiny detail can be of importance if you go the full lenght, more on that later.With those three components (or two if you want to go without the throttle body) you have a stock international version of the 650.Makes it relatively easy to convince your insurer that the bike is safe to use in this configuration.Adding just a slip on is no problem either as the normal ECU runs quite rich in the higher RPM's anyway and the new exhaust would not make too much mess here.But adding a less restrictive airfilter will need Dyno tuning.Going the full length, especially interesting if you buy a second hand Cfmoto.It will take you a lot of Emails and some overseas phone calls but it is possible to find a wrecker that can sell you the registration plates for the frame of the bike - legally if said wrecker is allowed to sell frame number for rebuilds.Adding this plate to your order means your second hand bike can be deregistered, sadly this means unless you pay extra you need to hand in the numberplates as well.No big deal however if the bike comes without numberplates anyway.Once you installed all parts and replaced the frame ID plate you take the bike for normal RWC check and get your green slip.With that you go and ask to register your bike with new (or your old) numberplates.The Vin will not show up in their database and a red flag comes up, prompting some questions from the offcial behind the counter.The bike you know have is an imported model you got for cheap when you saw it for sale in some carpark with a blown engine.As the actual engines are identical you replaced the blown engine with one from an AU bike that crashed and was written off.In return you now pay a slightly higher than usual transfer fee but get the bike registered as he international model without LAMS restrictions.Even the engine showing up as a LAMS engine is of no concers here as there is no legal reason to not allow the use of a lower powered engine in a motorcycle.You insurance polcy will also go up a few bucks but that is not really worth crying about now anymore.Once you go out with your numberplates you can enjoy a legally derestricted (imported) Cfmoto.Ok, I got it an I say I am a fully licences rider that does not care too much and wants to go as cheap as possible...A brand new ECU from China sets you back about $400AU.Downside is that you are never 100% certain the mapping will fit what is installed on your bike.There might be differences for the US or EU market, not so much though for Asia - so ask for what market region the ECU is intendet and prefer the Asia market here.The airbox limiters should be safe to remove but you might have to make simple plates up to install so the air turbulences are within specs - you will notice if the bike runs really crappy in the high revs and struggles to provide power to the wheel...Unless Cfmoto actually include more limitations in or around the throttle body going with stock should be fine - flashing ECU error will tell you if not.Postage from China can be a pain, not so much for time it takes but for the money charged to use proper and trusted courier services.Up to $100 just for postage is not uncommon but also means the parts are your within a week or 10 days most.Some provide cheap flat rates but both have the risk of being asked to pay import duties if held by AU costoms.Going second hand from some wrecker outside AU can be slightly cheaper for the ECU but again postage can a pain on the pocket.The obvious downside is that the bike with such a simple and direct mod would be still a LAMS bike and if checked make it illegal to use with all the corresponding consequences for the rider - even if fully licensed, please check the above insurance part again if you must.If done properly and maybe even with a slip on: what gains are we talking about in actual figures on the wheel?To be honest not really that much at all, the bike is just too heavy.But the response will improve noticable!The bike pulls out of corners with ease now and no longer requires you shift through the gears with a screaming engine.Imagine you have a small, 4-cylinder car and went on a long holiday trip with your heavy camping trailer always attached.Holidays are over, you unhook the camper and go for a quick run to the shops for supplies.It is that wow feeling that you get when you take off with the weight gone...The gears run higher with a more evenly distributed power instead of just a narrow window of RPM's with enough power to pull away.The KW and RPM values are available on the Cfmoto homepages.What about top speed?I managed to get to a full 110km/h !! ;)For anything above that ask your local Dyno please or pay for a day on the track.What if the police gets me and makes trouble because of the modifications?A well trained officer in a bad mood will always be your nightmare.So I won't go into the troubles if you still need plates or just got your full license a few days ago...You are allowed to ride any road legal motorcycle, no matter the power ratings.However, a really pesky cop wanting to go by the full book on you will use the computer to check your bike and registration details.And if he knows the most obvious non-legal mods to LAMS bikes, like the shiny exhaust you will need a lift home.Chances are though that a clean driving record and having your full license for a few years indicates that you actually know how to handle your bike properly.That is the point where your honesty and details with the insurance company matter.Preferably with you having a copy of your policy with you when riding the bike.With that you can always argue the modifications are documented and approved by your insurer and corresponding vehicle tester.Makes it then only a minor offence for not being LAMS conform.The paperwork to fight you on what your insurer singed off for is just not worth it with a possible drunk driver getting past while you argue....Legally they can still book you or even take the bike but do they ever bother to take those Harleys or street racers with screaming exhausts you hear from miles away before you even see the bike? ;)As said, it comes down to a LAMS offense that is fully covered by your insurer and with that not really worth making a big fuzz about.If you got pulled over for speeding or other offenses the story will be different though as it then could be argued you made these modifications with the INTENT of illegal activities - like speeding or pulling stunts that are not allowed on public roads.Here you insurer can refuse the cover the same way they would for the same offences on a fully legally unrestricted bike.Is it worth taking the risk?No, it is not!If you are after a bike with good handling and power you would not ride a Cfmoto...As a true LAMS bike the resale value is actually quite good if the bike is kept in good condition.Modified you will have a hard time selling it as no learner would take the risk - a working brain assumed here.For a keeper once fully licensed or someone on a budget it can be quite tempting.After all, it leaves a nagging feeling if have a full license and sit on a restricted bike....You always have to explain what you ride and why anyway every time you pull over where chatty bikers are around.Selling the bike in good condition and maybe together with the extras you got over the years might be enough to justify the extra for a second hand bike from Asia, Italy or Austria and give you more leasure and pleasure in the long run.Doing it properly and in the most legal way costs quite a few bucks.If you add this to the current asking price of around 7500 ride away will add at least another $1500.Depending on the exhaust system even more.If you require proper identification and tracing of things like VIN plates it can be clse to $2000.At this point you already see really only makes sense it is a cheap second hand bike, whicj makes the entire approach a bit questionable anyway.With now close to $10.000 for a new bike the difference to a well known brand with maybe a better reputation is not that big anymore.The bike would already be unrestricted and making road legal modification wouldn't interest anyone.Not to mention of course the warranty issues as Cfmoto won't honor any of it if you modify new LAMS bike!Now add the possible costs for repairs or parts that would otherwise be free and free of labour costs and the bargain becomes very expensive before the warranty period is over.There will be the point where you ask yourself why did you bother in the first place....Warranty....Once modded the factory warranty is void so to say.Problem here is that the law is intentionally unclear on the reasons and options applicable here.As the bike would (without exhaust mod) be just like any international model the law states the warranty must be granted.However, Cfmoto has the right to refuse it anyway based on the exclusions required by law to prevent non-LAMS conform bikes from getting back on the road.A blown engine with a proper service history would be no big deal without this.The right to refuse a free warranty replacement for covered parts if the bike was not serviced by a licensed dealer is something car manufacturers already failed with.Cfmoto however will argue that their terms and conditions always superseed any Australian laws or regulations unless it was legally shown that one or more sections are actually invalid in Australia.This includes any evident or suspected tampering with the LAMS restrictions.If in doubt an ECU reading would indicate the impossible throttle positions used and the different ECU.Means even once the warranty is over you can't really take your bike to your dealer for a service or just a check without risking troubles.Some say this is still not enough to deter restricted drivers, I say that any fully licensed rider should have the right to enjoy his bike without LAMS restrictions.But if in doubt Cfmoto is always right, no matter how they argue.Last words from the wise camel....If you are fully licensed it is entirely your choice what you do with your bike and how you deal with - or interprete possible legal issues.Anyone required to display plates should just not think about modding the bike, it is not worth the risk.Although not really a big deal for an experienced rider, the added power and better response can cause a bad judgement.You might have been happy to open her up fully around your favourite hiarpin bend but now it could mean you loose traction even if don't try to break your LAMS approved speed record.Especially when things get a bit slippery and unexpected it can be difficult to prevent the heavy beast from going down.Never underestimate what you can't see and react to in time!Never overestimate your skills or the bikes real capabilities in terms of handling and grip!Once you are fully used to the different response you are fine, until then it is better to play it safe instead of ending up to be very, very sorry....

Topic by Downunder35m    |  last reply

Quantum Levitation

Wow, just in time for The Mad Science Fair- an awesome magnetic levitation set-up. The Superconductivity Group at Tel Aviv University have been working on thin-films of superconductive materials and have found effects.  The thin films will apparently have a few defects, resulting in very specific areas where the magnetic field permeates.  This rigidly constrains the composite, allowing even "up-side down" levitation! (locked in space, beneath a magnet.)  Would be so awesome to play around with but apparently the deposition of the superconductive film is a real challenge, not to mention the sapphire substrate. A forum post at HI Capacity had these links, probably after a member saw Gizmodo's article "What the Hell Magnets? Why Are You So Amazing?" Via youtube: ASTCvideos Quantum Levitation QuantumLevitation

Topic by CrLz    |  last reply

Non-toxic, natural, cheap and WATER-PROOF adhesive or glue, is this impossible?

I'm a quality engineer working for a company in Turkey, the company collects the coaldust ( powder form of the coal )  from all the cities of Turkey and makes them briquettes by pressing with very powerful machines. Of course we use some adhesives for mechanical strength of the briquettes. We use CMC (a kind of cellulose) and this material is soluable in water. So our briquettes are not very durable under rain or moisture. Now I have to change the binder or adhesive materials in order to produce waterproof briquettes. I dont know how it's possible. I have to use nontoxic natural materials, and cheap as well. Last week I tried to do something but we were unlucky maybe. I tried to use Technical Gelatin and Alum (Al. Sulphate ) together, the briquettes seemed very good after production but they were not durable when I left them in a cup of water. So I have to find a solution now. Can you help me about that? I'd be very pleased. Thanks.

Question by enisdogru    |  last reply

1995 Mazda familia

Krazybfamboi have a Mazda familia 1995 with suspected blown outer CV needing information on how to remove it safely as it will b my 1st time doing a CV in my life only have general motor skills and need to know what tools r needed as I might have to buy them any instructions will b appreciated

Question by Krazybfamboi    |  last reply

220v 3 wire to 220v 2 wire (USA to Philippines)

Hello all,  I'd like to purchase a welding machine in the USA and take it to the Philippines. My problem and hopefully solution is, USA use 2 legs of 110v for 220v appliances/machines. In the Philippines, voltage is 220v (single leg). So, If I have a single phase, 220v welder, can I cut the plug off, combine the two power legs and connect to the power in the Philippines? I hope I am able to articulate this question properly. Mig welders are not easily available over there. Thank you for anyone that can help

Question by TerryH74    |  last reply

The Torrefaction Process... Anybody know how to cook wood?

For anyone out there who is not yet familiar with Torrefaction, it is a process of "baking" wood in an over between 200 and 320 degree Celsius (392 - 608 F), in the absence of oxygen. Don't quote me on those temperatures btw... I got them from Wikipedia, and they sound way too hot based on other articles I've read. The idea is, wood contains a lot of biomaterials like sugars, resigns, tar, and water. After you cut down a tree, these materials begin to vacate the wood through evaporation, sublimation, and all the other _'ations...It takes 100 years or so, but eventually, they all are gone, and the wood is super stable, and no longer expanding, moving, contracting and changing. This old wood is also extremely rot resistant and can withstand the elements. For this reason, Torrefied wood is used for decking and outdoor projects mostly. However, the guitar industry has also started to adopt using it, because you have basically aged the wood 100 years in the course of a few hours. You have also increased the price of the damn guitar to the, "your firstborn child" level. I build guitars, and I cannot believe that it can be too hard to bake some wood myself. Here are the variables that I see...1. Vessel: How to create an environment that can be brought to a specific temperature (~350-400 d F), but has also had all oxygen removed? Even if you welded together a steel box that could be locked down air-tight, and had a valve that you could pump all the air out, if you could figure out a way to heat that box to 400 d F, the water inside the wood would def. begin to boil and I imagine would be re-introducing O2. I guess you'd have to re-pump the air out every so-often until all the water was gone. 2. Temperature: Torrefication is also the exact same process that is used to turn ordinary hardwood into charcoal. I have no idea what the temperatures are, but lovely baked spruce for a guitar top has turned a slight aged tan color. But if you cranked the temp, it would eventually turn into pure carbon and be jet black like charcoal. I have no idea how to tell what temp achieves what I want. 3.) Time: I always read that Torrefied wood is baked at these temps for "several/many" hours. How would I ever know?4.) Pressure/Flames/Bomb: I know from watching YouTube videos, that when charcoal is made, wood is superheated in an oxygen-free env. until the volatile oils, resins, etc ignite and burn off, thus leaving Charcoal. I do not want to weld together a heavy steel box that becomes a high temp pressure cooker, that blows my kitchen apart when the oils in the wood inside of it ignite. Does anyone know what I am talking about and/or have any suggestions?

Topic by Dolmetscher007    |  last reply

Dead quad

Have 12v quad that has just diedNew battery fully chargedLooked after kept in sealed carport used rarely by grandson Only perhaps once monthBrought about 18months agoTested everythingCan i buy the sealed unit for this or does anyone have sugestions Seems shame to dump it as it looks like new

Question by shirleymearns1    |  last reply

I am looking for plans to build a 6' home bar with a back bar. Does anyone have a set of plans? Thank you!

I have some limited wood working skills. Looking for something that looks good but is easy to build.

Question by jrmurt    |  last reply

Differences of Tcs3200 and tcs34725 colour sensors?

I wanna buy some cheap colour sensor, but i dony know the differences of any colour sensors, which one is better And some pros and cons about this two colour sensors? (Tcs3200, tcs34725) ? Thanks

Question by Hndrzp    |  last reply

What can I do with 1-Gal. Arizona Tea jugs? Answered

I have a bunch and I'm sure they could be used for something awesome.

Question by stronglad    |  last reply

Replacing capacitors with different rating? Answered

Hi! I am trying to repair a computer has 2 capacitors that are blown. I have a replacement for the first one, but not for the second one.... My question: On the capacitor it says 330μF 25V, can I replace it with another type of capacitor? Wich number is important, the "μF" or the "V"?

Question by Fypsigon    |  last reply

I can't enter a contest. Why?

I fulfill the requirements but it does not let me enter the contest. I tried for an hour

Question by majo8D    |  last reply

How to make files show as Download at the bottom of an instructable ?

Hello everyone,I made an instructable recently which contains STL files for 3D printing. When I click edit instructable I can see the files there but when I go the instructable, I don't see a Download section where users can download the files. Can you help me with that please ?

Question by firashelou    |  last reply

Shock absorbing fabric

I'm doing some research and trying to see if there is anything out there that's a shock absorbent fabric type material. Unfortunately, i've only been able to find sorbothane (which isn't a fabric type material). The usage is going to be an adjustable cover that can wrap around whatever i'm covering and allows impact protection.

Question by themandrius    |  last reply

Can adults enter in the contest or is this just for students?

Just wondering if adults can enter the contest or if this site is just for students k - university?

Topic by AshleeN15    |  last reply

What is the solution recipe for reverse electroplating gold??? Answered

I have ALOT of pins and boards so I need the ratio of chemicals for the bath of electrolytes

Question by Draconus24    |  last reply

Yet another unidentified tool

Hi guys,Can anyone tell me what this tool would have been used for?The fine wire is spring loaded.I was thinking perhaps a pricker for an old gas or kerosene lamp light to clear the aperture, or maybe a paint gun.Seems an over complicated device if it is what it was used for, but i guess it protects the wire by retracting it.

Question by AussieAlf    |  last reply

Peltier dehumidifier Answered

Hello. I'm experimenting with peltier dehumidifier. First I know its least efficient dehumidifier but I have one and I'm trying to experiment with it to increase efficiency. We have many smart people here, maybe you guys can help me to understand one thing. On peltier dehumidifier air is pulled through cold side in to the hot side and warm "less humid" air coming our from other side. Why not to pull hot air from the hot side and reroute it to cold sink because that would create bigger temperature difference on the cold side and would increase condensation and warmer air has more moisture as well. Please correct me if I'm wrong because I dont understand why these dehumidifiers are made this way. Thank you

Question by TeddyWeddy    |  last reply

can you help me identify this alternator? Answered

I just got this alternator from my grandpa and am going to use it in a generator I'm working on but I Don't know what kind it is. He told me its a one wire but it has some prongs on the top. Any information is helpful and help is greatly appreciated. Thanks       Harry

Question by harry88    |  last reply

The dirty little secrets about switching to LED lights

Some years ago we were told to invest in more energy efficient lights for our homes.Incandescent was using too much power, so CFL's, Compact Flouroscent Lights were the ting to buy.Much higher price than the normal lightbulb but hey we save a lot of money in the long run.No one liked the long warm up time to get full brightness...And even less people actually got the claimed lifespan out of them.Add the recycling costs and hazardous waste created and the costs of using CFL's is actually much higher than standard light bulbs.The only savings were for the power companies.LED lights had a slow start but once mass production started price went downhill fast.What started in the EU was made compulsory in other countries soon after: A ban on incandescent light bulbs.Thee are only a few exceptions left like bulbs for your oven as LED's won't cope with the temps here.So why was the ban necessary?An incandescent light bulb was available for often under a buck, so having some spares at home was no issue at all.Making people switch to LED lights that often cost 20 times the amount of an old standard light is impossible.Biggest incentive of course was the short boom to the local economy as the initial batches were all sold as high quality items.The scam started to evolve when it became clear that even with LED lights the overall savings hugely depends on how you use your lights.As a factor on your electricity bill the lights are usually at the bottom of the list.Things like heaters, airconditioners, fridges, freezers and of course TV's are the main users of electricity in many houses.During the winter times this changes as we need more light but still the impact is not as high as you might think.What did change though was the behaviour.Since we now save so much energy we don't really worry as much if the light is kept on for no good reasons.Again, the main savings are with the electricity providers.I won't deny though that a house with 100 60W incandescent lighs will have some benfit on the electricity when switching to 8 or 10W LED lights....Lifespan...Like so many others I have some stories about incandescent lights...For example the one had in the basement when I was a kid.Often on for several hours, sometimes just for a few seconds to quickly grab something.But it still worked fine when I was an adut and never had to be replaced.Or the house that destroyed lights on a regular base thanks to power surges from the nearby industrial areas.LED light were meant to make the difference here.Put them in and never worry about replacing.10.000 or more hours before the LED's fail...Nice claims but never fully true.10.000 is a bit over a year of constant use.Most people won't just leave the lights on for the entire year.So you would expect that a good LED light will work just fine for at least 5 years, under normal conditions close to 10 maybe.There is several problems with this claim - none of them are explained in the warranty leaflet and nothing was explained by your government when you were forced onto LED light.Electronics even as simple as a resistor come with a limited warranty.Some will remember the disaster when bad capacitors turned thausands of flat screen TV's into flashing lightbulbs.The parts used to make the lights can be a year old already before they are soldered together.Then there is time for shipping, storage, distribution.Sadly not all countries require to print the manufacturing date on the packing or LED light.Means that by the time you put a new LED light bulb into use it might be two years old already.Similar for the claim that the light won't emit heat.Sure the LED light itself is cold but the heatsink the LED's are mounted on is far from it, same for the often underrated electronics inside.In return the electronics suffer from the excessive heat, espcially if mounted in lamps not designed for them.Which makes the entire replacement a scam for most people.It is not uncommon that a LED light fails within a few months.If you are lucky to have kept the invoice for it you might be able to get a new one from your store.Now I replaced 20 lights when I moved in here.Only the first three that failed got replaced, after that the shop claimed I would misuse the warranty.I inspected them and it was not easy to get inside.The switching IC used should have had a heatsink according to the datasheet, without it the circuit board got toasted until the IC finally cracked.Without a sufficient heatsink the IC was only rated for a max of 5W while the light had a LED assembly of 15W...I kept doing these destructive examinations whenever a LED light fails.So far they ALL had sure signs of overheating, either for the switching IC or the tiny transformer.No one really bothers though to keep track of the hours a light was actually used and with that we just keep buying new ones with no worries in the world.Recycling....An incandescent light was never really worth much to begin with, so the final grave was the normal rubbish bin.CFL's required proper disposal due to the hazardous materials in the tubes.A comparison between the amount of sold lights and what ended up in recycling centers reveiled that the ,ajority of them ended in landfill because people tossed them in the normal rubbish.The long term impact of those chemicals on the enviroment will be hidden under fresh grass by then.LED's claimed to be the way out as they were meant to be fully recycleable.What really happend with our collected recycling bins was clear when China stopped taking it.....Means all the still usefull materials in those expensice lights again just go into landfill.A total waste on so many levels.So what is the real cost then?Electricity prices are only going up, so saving Watts wherever possible is a good thing.But ask yourself:How much energy and ressources were required to produce an incandescent light bulb?How much more is required to produce a LED light?We are told to focus on our electricity bill alone without considering the overall costs.Since we already pay the extra of making them we tend to forget what happens once they fail.More waste, more landfill, no recycling of the lights at all.But does it prevent your next blackout when the grid is at max capacity? Nope...Keeping your big airconditioner off for a hot day or two would save more electricity for the year than changing from incandescent lights to LED's ;) Does that mean we get way more efficient airconditioners? Nope...Where in developing countries cheap and highly efficient compressors are used we invented inverter technology ROFLMakes no difference at all on max power to have an inverter.The only real difference is that it runs slower at lower capacity while a normal airconditioner turns the compressor on and off.Forcing the use of highly efficient compressor technologies and replacing our old style systems would have made a real difference on the overall electricity use.We "save" electricity with LED lights and only turn them on if we really need them.Still the 5 or 7kW airconditioner runs all summer long and in the winter it heats the house and uses even more electricity.Makes you wonder, doesn't it? ;)

Topic by Downunder35m    |  last reply

Are catalytic converters poisonous?

I've been looking around and it seems like most catalytic converters have palladium in them. I think palladium is mostly inert but palladium salts are highly toxic. I would like to open up a catalytic converter and use the substrate to make a thermoacoustic engine stack. So do you know if it would be poisonous to me to open a catalytic converter? Thanks!

Question by snotty    |  last reply

How do you build a home made wood burning Sauna heater?

1 Nov 2011.    I am stuck on a Firebase in Afghanistan and winter is approaching fast. So i was thinking that building a sauna would be a cool project.  The wood shack isn't that hard, but how to build the stove/ heater/ thing? So, Any ideas?

Question by EcoExpatMike    |  last reply

Making a pillow with pressure sensors and a keychain connected with bluetooth

Hello, I want to have information on the materials and the process to make a pillow with a pressure sensor that is connected with a key ring and warns when the child is sitting on the seat and the key ring moves away.

Topic by GiovanniA34  

E-bike modifications

For a few years now the popularity of electrically assisted bikes, scooters and Seway like devices is growing.If you see all these nice Youtube videos of people enjoying a ride without actually doing anything then you often want to join.In most countries though anything with two wheels and a motor is somehow classified.A nice way to for example prevent someone to run a 2000W E-bike at 120miles per hour down the freeway...There is a limit in terms of motor or power on the wheel, sometimes even a combination of both.Anything above and it is actually a motorcycle by definition.If you are in a country without such restrictions and clissifactions then read something else as nothing here will apply to your ;)What is the difference between an electrically assisted bike and an electric bike?The most common regulation for E-bikes is that they only drive the motor if you actually pedal enough.Even with higher power motors they are usually just restricted in the max speed at which the motor still helps.For example you get assistence up to 25km/h but above you are on your own.An electric bike or scooter does not have this requirement even if there might be working pedals on it.Here we have restrictions on the max power that is allowed and often also a max speed that can be reached.What does it mean if I remove restrictions from my E-bike or scooter of sorts?Without any corresponding road or vehicle laws and regulation nothing at all.In most countries though you would turn your fun toy into a motorcycle by classification.As such it would need to be conform with everything a motorbike needs to fullfill.However, you can't register it because it was modified and never intended or designed for this, it would be illegal.It is no problem to find info on the WWW on how to remove any possible restrictions, install stronger motors and batteries plus heaps more.But should you risk it?What happens if my mods are illegal and I cause an accident or get involved in one?If we trust statistics then the morojity of electric bokis or scooters involved in accidents is modifed to get more than the allowed power.The statistics however conviently fail to show how many accidents were actually caused by them.This means we can assume the same that the cops or forensic investigators assume: Unless confirmed to be legal the thing has illegal modifications.With that comes the legal approach on any rider that caused an accident with serious injuries or worse.Without the modifications you would get a slap on the wrist unless you were careless, after all accidents happen.Modified however you face several problems.a) You illegally created a motorcycle that is not approved for the use on anything but your own private property.b) As it is now classified as motor vehicle you will be charged with driving it without the proper licences, driving an illegal vahicle or a combination of both.c) With serious injury or death on the table you are no longer a kid having some fun on his new toy, you are a serious criminal.With all three boxes ticked you are likely to end with a jail sentence.Is it really worth the risk?Get a license and a real motorbike with numberplate, insurance and all - no scooter or E-bike will give you that feeling...If you are still not fully convinced then imagine how it would be on the other side of the story...You come home from a nice and speedy ride on your modified E-bike and the police is already at the door and your parents in tears.It was not you but someone else on a way too fast E-bike that got your little sister into hospital after getting hit.And since the rider knew what he was up for he made a runner...How would you feel here? Always consider this feeling when you think it is worth putting other people in harms way...

Topic by Downunder35m  

What is this tool

We use this at work for cutting mesh, but would like to find another one as a spare, but dont know what it is? Not sure if this will be the best forum to use ? Any help with finding one would be great 👍

Question by Bodney    |  last reply

Rewinding a DC motor for different voltages

I modified small DC motors, like used in toys and such but now I have one that requires to do it properly.Motor in question runs on 24V and uses about 3.5A under full load.Drives a high pressure water pump on either side of the shaft.The rotor is basically empty with just a few turns of wire and lots of empty space.I assume the same model is used for multiple power configurations by the manufacturer.For the toys my basic approach was to just calculated the number of turns or to count them when removing.From there I get the voltage per turn and can rewind accordingly.So in theory and by blissfully ignoring all higher things involved I could do this motor the same way.Right now I see 10 windings per coil, so with thicker wire I would use 5 to run it on 12V at roughly the same speed.Only problem is that thing then would use around 7.5 to 8A when running under full load and get quite hot.I need the speed to keep the flowrate at the same 7.5L per minute but I also need the power to be able to still get the 120PSI from just 12V.Isn't there any winding trickery that would allow me to reduce the required current a bit without sacrificing on speed or torque?

Topic by Downunder35m    |  last reply

How to make an 'Ashley Too' from Black Mirror?

Hi Guys, My girlfriend is planning to dress as Ashley O from the Black Mirror episode 'Rachel, Jack and Ashley Too' for her Birthday party in November. As a nice surprise I'd like to make her an Ashley Too from the show, bonus points if I can fit it around my Alexa. Was thinking of using an Old Air freshner for the body, hollowing it and fitting the Alexa inside.Any ideas on how I could build the head and light it? Fimo for the hair maybe?What about the arms and adding some basic articulation?Would love some ideas!

Question by flakjack    |  last reply

Can wd40 be used to lubricate PVC? If not, what can be used? Answered

I heard somewhere that WD40 would damage or corrode PVC, and wanted to know if this was true. If it is, does anyone know what could be used to lubricate PVC.

Question by 1337f0x    |  last reply

Can I use a 30C lipo on a Ct6b transmitter?

Does the C rating matter when using lipos on transmitters?

Topic by samyuelmurungi    |  last reply

Can this unit “Pioneer mvh-s219bt” drive two of this “Pioneer TS-R6951S 3 Way Coaxial Speakers” without any external amplifiers?

I am trying to replace my factory head unit and two speakers system in my car, with the above system, i am poor so if this works then please dont suggest any other options or better company names, just tell me whether my new system works fine or do i need an amp to just power those two speakers? i am not planing to have woofers tweeters or any other speakers, only these two coaxial speakers on two front doors, will this work? thank you for the help :)

Topic by sreessxp    |  last reply

Animating Xmas Parade Float

Below are some pics of the Xmas parade float that a few of the other dads and I put together for last year's town Xmas parade. We are planning on keeping the same theme this year but wanted to upgrade a bit. Our goal is to automate the reindeer to give them some linear action that will give them the appearance of flying.When reviewing the pics, please note that the frame that the reindeer are attached to will be completely rebuilt. I was thinking of a frame with a double 2x3 side. Where one of the 2x's will have a channel routed out in it and the other one with the reindeers attached will then be able to slide back and forth by it.Another note is that Rudolph will not move. I have included some rough sketches of my initial thoughts using a motor and a cam. My problem is in finding the right motor for the job. I would need a high torque, low rpm (about 20) motor to do the job and I can't seem to find one. I have thought of using a mixing drill and a speed controller, but the mixing drill has an rpm from 0 - 550 and I am not sure the speed control will be able to slow it just 20 and even if it does, I am not sure there will be enough torque at that reduced rpm.I am certainly open to other suggestions. Thanks in advance for any thoughts or comment you may have.

Topic by EricW194    |  last reply

How can I tell if a first floor wall is load bearing? Answered

Hi, I would like to remove the wall between my kitchen and dining room to open up the area.  How can I tell if the wall is load bearing? The wall is on the 1st floor, runs lengthwise to the house and is about in the middle of the house, but it doesn't travel the entire length of the house. Any help or advice is appreciated.

Question by JMH renovations    |  last reply

The Newman Motor Challenge !

I was recently approached by someone claiming the old Newman Motor wouldn't be good for anything.Well, I was a little bit offended by this as I already had my little toy version of it as kid.At that time though it really was just a toy for me.Critics still say the Newman Motor is nothing more than some interesting machine.And even the biggest followers will admit it is not a free energy machine, just a very efficient one.I experimented with, what some call fringe science, now for about 30 years.And it all started with math and my interest in unusual ways of dealing with problems.So what's behind the challenge?The original design was suprisingly simple as you can see in the above Wiki link.Just a spinning magnet in a (split) coil.What you don't find anywhere though is real details on the how to.Sure, you need to have some sort of contact linked to the rotation and timing is critical but what does it all do?You can build a drt simple model in a few hours with stuff you might have around already.Quite a few Youtubers are happy to share their creations.The actual challenge is to come up with what Newman really did inside his drum.And also why I think it is not the full potential his machine had.Build a simple Newman motor and check for how long you can let it run on a charge super capacitor.Then sit back and read some of the other magnet stuff I wrote.After that come up with a better design ;)I started to create some 3D models that need testing once I find more free time - should take some leave one day..But for those with little patience and an interest in the Newman Motor I decided to share my current idea:For some it might be really confusing although they know motors and magnetic fields.Those just playing with magnets might have it easier for once as they can pretend they followed my thoughts ;)The original design used two coils and a rotating magnet.If you consider how the magnet creates an electromagntic field in the coils then you have to wonder right away how it can spin.And most designs will indeed need a push start to get going!You can't have electricity produced without the magnet spinning and you can't make it spin without electricity!The current from the battery or capacitor can only flow at the short moment of contact on the axle.This moment needs to be timed "mechanical" as we don't want to waste any power on not required electronics.If you ever bothered to check the timing of a Newman Motor then you realised the collapsing electromagnetic field at the moment of contact actually is in reverse to what the manget has in that position.Unlike any normal motor it means the magnet produces most of the power the coil needs to make the rotor spin!So far for the well known facts, now for my fiction:I would like to call my version the Aussie Newman Motor as all things downunder are just different ;)Here are my current desing mods, that I freely share so everyone can benefit form many years of experimenting to save a lot of time.1. Instead of two coils a not-really-bifilar coil is centered on the axle.The coil is created like two stacked relay coild that have no bobbin and a "dint" to allow the axle to pass through.Without the big gap of the original less of the magnetic field strenght is lost and the coil is far closer to a homogenous magnet.2. The timing done by salvaging a simple DC motor's contacts and brushes.This allows for far higher currents and if the salvaged motor had enough poles also for a very short "burst".3. The axle contact is made with a cleaned steel bearing.After cleaning very conductive copper based lubricant is used in tiny amounts to prevent corrosion and provide a lower resistance.The clear benefit is that with the new timing system a lot more current can flow.Initial tests with a mock up model showed an increase in run time from the capacitor of about 15% already.With proper bearings and a salvaged DC motor I hope to reach 18 to 20% more than the original design.Now why the DC motor if a reed contact or hall effect sensor would be even faster and with less resistence?Neither can handle really high currents without additional electronics ;)Plus of course I wanted to leave the door open for the Aussie Newman Motor 2020.You might now say "Why bother if the above improvements are already so great?".If you followed my elsewhere for a while then you know the Newman Motor is only 2D but I prefer 3D or more harmony if you like.Right now the imagination of people re-inventing Newman's machine is limited.They try to get on the horse from behind - literally.Fancy electronics, machined parts and so on.But they never go 3D ;)You got it? :)There is only two coils!!The magnet rotates, same as the contact on the axle.One set of coils for each contact the salvaged DC motor has.Each set aligend to the corresponding contact.And now you will ask "How do you plan to connect that to a single DC power source?Well, that is why it will be the 2020 model - my time for tinkering is sadly limited because I still need to work to support myself.But if you consider that the original as a good model can run for over 10 minutes on a supercapcitor then ask yourself how long it could run on 4 or even 8 coil sets.And although there is no such thing as "free energy": There will be still space for more coils.Or other coils to just provide electricity that does not power the motor.Critics will now see their chance and state that if we add a load to these additional coils then this will cause a strain on the system.Of course they are correct here.If, however, the load is mechanical then the motor needs to supply basically the same additional energy.Plus all mechanical losses.The question is: How much mechanical load can we add before the motor is down to the same efficiency of a very efficient DC motor? ;)And what if our Aussie Newman 2020 would actually violate the laws of physics?We can calculate how much electrical energy would be required so a given motor produces a fixed amount of torque.Or we can just measure it, the beauty of science...We can do the same in reverse of course.Let's say a mechanical pump would require 500RPM and 100Nm of torque to pump 100 liters per minute.Then we could calculate what sized motor we need to drive the thing and how much power the motor would need.So again: What if the Aussie Newman 2020 would require far less than what science makes us think and still does this job on a simple 12V lead acid batty of 4Ah?Just saying... ;)I hope to have a presentable and working 2 coil system by May, so stay tuned!In case you are faster or even beter then of course feel free to show off your results or to post a link to your Instructable so everyone can verify it.

Topic by Downunder35m    |  last reply

Construction ideas for this concept?

Recently, I have been working on a gas 'vaporizer' that evaporates gas before being fed into an engine. During my short-term experiment, I found that this saves ~70% (+-20% for crudity of measurement.) This works because the vapors will burn more thoroughly and cleanly, leading to higher apparent efficiency. Below is a basic diagram of how the system works. You can see there is a container that is half-full with gas, and a hose goes down with many small holes. As the engine's compression draws a vacuum on the container, air will come up through the holes. As it rises, the gas-air surface area rises dramatically, leading to the vaporization of gas. To further increase the surface area, I also added a felt liner on the inside to allow the gas liquid to rise and evaporate. The final mixture ends up very rich, so to compensate, a 'T' fitting has been added to allow air to mix in with the vapors/fumes. Some valves have also been added to control the air inlet (similar to a 'choke') and the amount fed to the engine (similar to a throttle. In fact, it is possible to use the original throttle or choke as a throttle on the carburetor on my tractor!) The problem is: My original design utilized a plastic folgers coffee can, and the flimsy plastic top was hot glued to a thicker plastic cutout for strength and support. Since most glues will dissolve in gasoline, including hot glue, it could not be used. most did not hold anyway. I also tried JP weld plastic cement and it did not hold at all. I had to trash this build. I did, however, get enough use to run the tractor for several minutes while testing gas use. I found that the tractor used nearly twice as much simply running on gas than the fumes. I did not have the float valve and electric pump hooked up with the prototype. Also the 3/4in housing I used may be a bit constrictive and also seems to get slightly damaged by the gas. It will not be a long-term solution.  So I need to redesign the project, and I am thinking of using a 1-3 gallon bucket that is sealed or a gas tank. I need good almost air-tight seals on everything. I am asking for any ideas related to the construction of this device and any tips you may have.

Question by -max-    |  last reply

Industrial sewing machine table replacement top

Has anyone on here ever replaced the top on an industrial sewing machine table? I'm looking for ideas for a sturdy top that supports a heavy machine as well as a heavy electric motor. Mine has sagged to a point where the belt is rubbing. Any help would be greatly appreciated.

Question by jayfedora83    |  last reply

Acetone Vapor fogger project - Ultrasonic atomizer component

Greetings!I'm halfway through making MechEngineerMike's acetone vapor fogger (see attached pics) and noted that the ultrasonic atomizer componenet shown in the Instructable article is a metal encased unit. The one that I found in the same host product I purchased appears to be silicone-encased. Has anyone else built one of these and do you have any insight as to whether the silicone encased ultrasonic atomizer will work for this application?Thank you for your time in reading this inquiry.Corey

Question by Coreyflash    |  last reply

Solved! Desperately searching for a project

Found it! GuysAbout a year ago I saw a cool project that I can not find again. I have tried dozens of tags (typo picture/wall art/letter/game/puzzle/mosaic/grid...) and crawled many many pages but no success... please help. It was a kind of typography picture with replaceable wooden tiles on a grid, maybe 10 x 10 tiles. You can combine the different tiles to form a letter/character or a geometric shape/picture. A little bit like a "typography wooden pixel art mosaic" I would be very happy if someone out there remembers this project and shares a link with me. Thank you!

Topic by Tobotron10    |  last reply