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Motion sensor bypass

My security light is equiped with a motion sensor, I would like to operate the fixture with a switch when needed and also by motion, how can I accomplish this

Question by CarlC89    |  last reply

Jurassic Spark kids game: how to distribute fun more evenly?

I recently made up an outdoor kids adventure game that is really fun for most, but could use help with making the game more fun for all the kids. I conducted an anonymous survey afterwards and a few kids were sad that they didn't get to find the batteries (explained below). My question relates to this. I'm asking here because I figure teachers have tons of experience with kids!The game is called Jurassic Spark. I've written up the details with lots of pictures in this Instructable for the game, but I'll summarize here:Target kid age: 4 to 7 years old (although I plan to continue adapting as kids get older) Scenario: The Jurassic Spark electrified fence has lost power and many dangerous dinosaurs are on the loose. Can our brave explorers (kids) find the high power batteries to energize the fence before it's too late? Watch out for the T-Rex!Player roles: explorers (kids), small dinosaurs (adults), and the terrifying T-Rex (adult)!To win: the explorers need to find and return the 6 high power Batteries back to the Power Station to energize the electric fence before the dinosaurs tag all the explorers. Because the kids are young, the dinosaurs (adults) aren't playing to win, just to make it an exciting challenge. The game lasts around 15 to 20 minutes.Getting tagged: When a dinosaur tags an explorer, the explorer has to freeze and put their arms out like in freeze tag. Frozen explorers are encouraged to yell for assistance "Help! Help! A dino chomped me!" and can be unfrozen by being touched by another free explorer.Tail stealing: The explorers are not completely defenseless, however. The small dinosaurs have tails that can be stolen and they hate that! "Roar! Who stole my tail!?" Tail lacking dinosaurs must return to the dinosaur pen before they can regrow their tail and return to hunting. I feel that this is a very important part of the game as it brings balance and a whole lot of fun. It also encourages lots of exciting team building as kids will often gang up on a dino to take it down or distract it. Once the electric fence is powered up, dinos that have their tails stolen are trapped in the pen until the game ends (usually only a minute or two).T-REX: To up the level of excitement, we add a T-Rex wild card into the mix! The T-Rex cannot be stopped and loves chomping on explorers! There's nothing quite like seeing a giant roaring T-Rex head chase or stalk their cute tiny prey :)We played the game with 20 kids, 6 small dinosaurs, and 1 T-Rex.Question: How can I make the game more fun for the kids that feel left out because they didn't find a battery? We made a rule that a kid can only return one battery per game, but there are 6 batteries and 20 kids. The older kids tended to find the batteries each game. My gut is telling me that I wouldn't be able to handle a game with 20 batteries.The part that makes this extra challenging is that the kids are young and I can't make too many complicated rules. We'll add complexity as they grow older with tranquilizer darts and stuff like that :)If you are interested in reading all the survey feedback, it is near the bottom of the Instructable.Thanks!Adam

Question by afraser-kruck    |  last reply

Problems downloading a class pdf?

It has come to our attention that some of our class PDF's are broken due to an internal timeout during the process requesting the assets to build the pdf with since it is requesting all lesson material at once.known problem class pdf:Wearable-Electronics-Classif you are experiencing this issue with a class pdf not downloading properly and you recieving a zero byte file, please try downloading the lessons individually.

Topic by mmmelroy    |  last reply

slingshot ammo

I just got a new slingshot and I didn't get ammo. What can I use either for hunting, causing pain to friends, or target practice.

Topic by Thelonelysandwitch    |  last reply

Can I place two speakers back to back in a box, any issues being too close or touching? Answered

2.5w 8ohm 3" speaker in a plastic box 1cm apart, possible to operate?

Question by celalboz    |  last reply

Sensor Contest Question -

Is a potentiometer considered a sensor?

Question by Texas_Mike    |  last reply

Q: cheapest way to remove bottom of water-heater

Hi, i pulled an electric water-heater (about 80 l) out of the trash. want to take the bottom off and convert it in a pot/kettle to do (´cook´ ) laundry over a wood-fire.i was wondering what would be the cheapest way to do it (i have very few means here)... rotary-tool?, hacksaw-blade?... (dont have a grinder, no blow-torch, no jig)guess to complete the cut i would use up quite a few of wheels, or, respectively blades (hack).any ideas? any feedback... all appreciated.bowing.

Question by la xerra    |  last reply

Novice here. Send a "gate open" signal from indoors? A gate closes access to the driveway leading to my little guest house.

I’m completely new to making electronically operated devices. I can't interpret and translate the existing rf signaling instructables to my situation. I’m also completely new to your impressive Happy to be here. The situation: On a shared property stands a main house and a little guest house. Both are served by a single driveway. Access to the driveway is restricted by a gate. The main residence (not mine) utilizes 1. a remote control and 2. a drive-up keypad to send the "gate open" signal. (Aside: the drive-up keypad is paired with an intercom. The intercom serves the main house only. My guests, or delivery drivers, must telephone me to alert me of their presence at the gate. To open the gate for them, I must exit my little guest house residence, walk the length of the property, aim my remote control, line-of-sight, at the gate and depress the button on the remote control. The gate opens. I make the return walk to the entrance of my residence. This poses two problems: 1. guests and delivery drivers must wait while I make the journey out of the house, to the end of the property and 2. I must make this journey through inclement weather and nighttime darkness. My first goal is to achieve an indoor located, or a just-outside-the-front-door located, "gate open" signal sending trigger. I've read that wired signal sending performs more reliably than wireless, due to the abundance of potentially interfering wireless device traffic. I dunno. My second goal is to give my guests and delivery drivers a two-way voice communication "intercom" specifically with persons in the guest house. This communication device must be unobtrusive in appearance to be appropriate-enough to stick onto the drive-up keypad & intercom to the main house. A device operating as communication to the guest house belongs alongside the intercom button to the main house. That's so my delivery drivers don't buzz the main house, unnecessarily bothering the owners. That has happened. Makes me cringe. There must be many methods by which to solve the two challenges: 1. a guest house located, “gate open” signal sender. The signal reliably reaching the end of the property and aiming at the gate, and 2. a guest house located, two-way voice communication something. I’ve seldom even peered into interiors of electronic devices, and am confessing my entire ignorance of electronic signaling. Since I embody the least informed and least experienced person possible to achieve these to goals, it seems to me the simplest to assemble and test is the best, and that I begin with challenge one. I appreciate you for your time in considering how best to recommend I proceed. I'm in the dark. If you are very swift of mind and short of time, perhaps take a pass on this one. I need a most elementary, every little step described, no steps missing or out of order, type of response. I’m a neurodivergent individual. I’m good with it. And I will convey, from within my areas of creative visual fluidity, instructables in gratitude for yours, and for fun. And when other participants request guidance that I can offer, I’ll do so.

Question by terrycten    |  last reply

Favorite classroom science experiments?

I've been wanting to document some simple and effective science experiments, so I'd love to hear favorites from the community! The most popular experiments at my elementary school were definitely lemon and potato batteries. I have no idea why, but tiny-me really enjoyed seeing that light bulb start glowing Or the time we dyed carnations using food coloring in the water in middle school! It was really neat to see the flower change a little more every day during the week.What's your favorite? :D

Question by jessyratfink    |  last reply

What to do with laser printer toner?

Hi all, I have a several unused laser printer cartridges I don't need. Is there anything fun \ cool \ creative \ useful I can do with the toner powder? Please note: * I don't have a laser printer * the powder is neither conductive nor magnetic. Thanks for the ideas!

Question by Morgantao    |  last reply

Giant Plastic Lung...

I have made a giant lung out of polythene plastic and I want it to inflate and deflate by itself, on a loop, inside a small room. How do I make this happen? I have access to power sources, plugs etc. I don't have a lot of money I am looking at breathing, it is there but doesn’t have a form. I am making breath something that can be caught by making a lung that I have built out of plastic.

Question by reckoner-rat    |  last reply

Using Arduino to control circuit to LED strip

Hey guys! First forum post here.I am currently trying to design an LED light system where when I place my wallet onto an NFC reader the lights turn on in my room.I am using an Arduino Uno for this project and I am stumped on how I do it.I have a separate DC Controller and a 12v, 3A battery to power the LED strips. I just want to use the Uno and NFC reader to either open or close the circuit. I don't want to pass the amperage through the Uno as it will just fry the board.Is there any way I can control the flow of the circuit without having the power pass through the Uno? I want to keep the power the battery pack supplies and want to make sure I won't just fry my board.Any help will be appreciated! If you have further questions feel free to ask.

Question by MikoPico    |  last reply

Trying to create my own car head unit.. Sorta.

So i enjoy electronics, so i thought of an idea that would really benefit my life. I enjoy listening to music in the car. Like really enjoy it. Currently i have the original head unit that came with the ford focus mk1. Its terrible, and the speakers distort at loud volumes. Plus there is no way currently for me to listen to my own music apart from a CD. Which come on.. no one uses anymore.So here's my idea that im finding difficult to bring to light. I was hoping i could create some sort of botch head unit. But i want to create this using components that are not end products. So no i do not want a £100+ amp that does this for me without the DIY. It should be a lot cheaper to do this DIY.So my idea was 1 amplifier circuit board, which is difficult to find to power 4, 4 Ohm speakers. So my idea was to have 4 separate amplifiers for each speaker. I can't find a single channel amplifier to power a 4 Ohm speaker however. The signal the amplifiers would receive would be through an auxiliary cable or bluetooth reciever.Any ideas to point me in the right direction would be awesome. If there's a loophole in my idea then please let me know. Still a lot to learn, but that's what were here for right.Thanks in advance.

Topic by BrandonC211    |  last reply

F330 camera drone help

Hello. I have ordered an F330 frame kit for a drone i wanna build. Basically its that frame because of its compact size, but i want it to have a lot of power since it will have to carry couple of different cameras, including a Gopro, and some mirrorless cameras. Would also like to have a decent flight time(30min) and decent range. Motors should be oveely powerful since i am experimenting with cameras etc, so i dont want it to struggle. Speed or performance isnt an issue, just the heavy payload. What motors should i use, that would fit the 330 frame? Also what battery and transmitter

Question by dsirotic  

Where are the "recent" instructables?

Hi, a few months ago there was a filtering option "recent" to show the new instructables in order. Now I only see the featured option and no chance to see the latest instructables. How can one enable this filter option again if I want just to browse the latest posts without any prefer?

Topic by bence.zahalka    |  last reply

Favorite 3D design programs to use in the classroom?

I have been using Tinkercad from the beginning and really like how easy it is to use.I'm curious what 3D design programs you find easiest to use and teach? Do you feel there some are better for different age ranges than others?

Topic by Penolopy Bulnick    |  last reply

How to do a screen like this?

Hi,Does everyone know how to reproduce a screen like this?It would be to implement in front of a led matrix.Thanks.

Question by dreamstoxics    |  last reply

Home page

I am at a complete loss as to why the most recent projects are not on the home page. Some of the projects shown date back to 2014!!! There seems to be no logic as to what is being shown.I hate to say that the previous version of the site was better when some of the improvements are great and it looks a lot better; HOWEVER, being able to see all the most recent project (whether featured or not) from the home page was great and it gave us makers something to aim at. It now seems that posts will be basically hidden unless someone is following you or the group that you post you.PLEASE bring back a simple way to see all submissions to instructables so that all authors get their moment of glory! Hiding recent and new featured posts within individual feeds does not provide that wide and varied community feel that the website use to have as soon as you opened it. Aaarrgghhh!!! now I can't figure out how to post this without putting it into some unrelated category!!!!

Topic by RCEM    |  last reply

Straight line art - what is the technical name?

I remember back in 2nd, 3rd, 4th, and I believe even 5th grade, when I was in a gifted program, we had to draw. We drew only straight lines, and when we did it right, it made a curve. We would get a paper with 2 lines, connected at a vertex, at a 90 degree angle. We would draw points every centimeter or so, and connect the points, far to close, far to close. (It's hard to explain.) I'm searching for it on the Internet, but I can't seem to find the right word. Does anyone know it? Thanks, and if it turns out all good, expect an Instructable on it mid- to late October.

Topic by Bran    |  last reply

Genie model 209 Garage Door Opener schematic

I took our Genie garage door opener apart [the light wasn't working and I read where that was probably caused by the 555 timer] and thought I'd carefully drawn a schematic before doing so, but I failed to label where the 3 wires from the receiver connect to the terminal block on the main unit, and also where the 3 wires from the main unit connect to the terminal block. Regardless, I have the unit back together and when the remote is pressed the receiver relay clicks, but that's the only thing that happens. I'm fairly certain the problem lies with a component on the internal motor controller board. And NO ONE gives out this kind of information. I can't even find it for sale !! But I'll be derned if I'm going to pay $50 for a new controller board when I'm almost 100% certain the problem is a $.59 diode or the like. Plus, I like a challenge and hate getting beat. Any and all help would be very much appreciated. Possibly I could find someone who has the same model unit and they could diagram theirs for me, possibly someone knows where to obtain the real thing. Thanks !!

Question by eagleshadow    |  last reply

How do I make a long nozzle for a silly string can?

I had an Idea for a Silly String firing Dalek Gun. Anyone have any ideas on how to rig a long nozzle to reach the end of the Dalek gun barrel?

Question by elkaddalek    |  last reply

The future of "mobile" energy...

Right now our current standard is still to use LI-Ion batteries when it comes to rechargable and power demanding devices.We all want more power for our phones, laptops or battery powered tools on the job.And we also want to be able to charge our batteries faster and faster.Back in the old days a D-Cell like lead acid battery in a flashlight was good for about 3 hours until it started to dim a bit.With up to 4 batteries inside they were not just heavy but also quite hazardous.Chargin was usually done over night and you just hoped they were not blowing up while charging.I spare you the other types that came after and that we still use as they all have their good and their bad sides.If we trust our marketing experts than quite soon we will only have electric cars on our roads and battery the size of a suitcase shall be able to run your car for hundreds of miles.The ideas of graphite based batteries or those using crystals and their forming reactions are all great and promising.Some will certainly make it to the consumer in a few years.The one thing that we are never told though is where all the energy to charge those batteries is supposed to come from.Replacing the combustion engine with electric motors is one thing but if no fossil fuel is used....Energy does not come out of thin air!Right now a lot of countries already struggle to provide a reliable power supply grid and distribution network.If you ever enjoyed a scorching hot day during a blackout caused by everyone using too much electricity you know what I mean...The population is growing as fast as the energy demand for our industries.Solar and wind are well and good but without proper storage solutions of not real use because no one can really predict how much they can produce.You know, weather and such things...If we trust our so called experts than all will come together really nice.By the time we have really powerful batteries we will have enough alternative energy supply chains up and running to keep them charged.I have a few issues with this entire concept, so let's see what other people have to about this:Imagine you have a nice and big cabin somewhere really remote and beautiful - but with no electricity for miles.Obvious solution for the modern hunter or nature lover is to invest into free energy.Free because that is how your solar, battery and inverter system would be advertised.You buy the stuff and after that all the electricity comes for free - the things pays for itself!Reality is a bit off though as you need to maintain and replace the costly batteries over time and such things.All this however totally changes for a residential home.Getting a huge solar system on your roof is no problem.Getting off the grid next to impossible.You see, once (or even before) you sign up for an electricity contract it is defined that your home is in a residential area.This brings certain limitations like the requirement to connect ot gas (if available), water, sewage and electricity.Only way to enjoy your "free" energy is by getting a good deal with your supplier.Some countries do it differently but around here it goes like this:Whatever you use still comes right off the grid.That is because your solar system really struggles to cope with load changes and providing surplus back to the grid.And since your meter is not capable ofworking properly with it either...To make it "fair" it is metered how much you use and how much you supply.Most companies here even do this on at least an hourly base - just to fair...For your bill the amounts are then adjusted.What you supplied is taken off.Sadly in most cases going negativ is not an option - if you provide more than what you use only your supplier is laughing.To make things worse what you supply is valued far lower than what you get from the grid.Often the difference is above 20%.Control....Around here quite a few people basically covered house, shed, carport and all with solar panels.This was while we had a great subsidy from the government to go solar...After now over three years most of these people still struggle to get anywhere near even for their investment.Without the grants the timeframe to break even was estimated to be around 12 years - which is about the time for when you need to replace the lot anyway and start over.Some do get nice savings on their bills though but families with kids not so much...If you have little to no chance to get your investment back before you have to replace it, then it is not really that much of a good deal after all.Imagine in town with hundreds of small houses everyone would be able to get the same money back for the electricity they provide...Pay 18 cents per kWh from the grid and get 18 cents perkWh for what you supply and once you provide more than you use you get money back.The providers won't allow this to happen as it means they not just loose some money but also they would lose control.How could they justify another price hike?How could they explain the blackouts?Why should tey pay you at all... ;)If a city with enough open and unused space would decide to go solar on a huge scale and while add also add a lot wind turbines....Someone would need the electricity provided and someone need to step in for those times where demand is above supply.Here the old triangle of power goes into full swing....You see a city or town would need also need a sub station to handle the electricity and to distribute it to the town houses, shops and so on.Funny thing is that only a "provider" can do such things.Doing it privat is usually only possible in really remote areas, like big mining outposts that just have no other option than using generators or solar/wind.And in most areas a town or city is no longer allowed to be a provider of electricty - at least not in the drirect form.Buying in bulk is no problem, having your own supply system however is not in the books.Right now most, if not all the big wind and solar farms are owned and operated by energy providers.There is billionaires everyhwere who could build a solar and wind farm the size of Texas if they really wanted but they won't do it either...Starts with the land, goes over the usage rights and won't end with activists claiming how bad it all is.Means it won't happen and if it does then the energy providers get together and claim they guy might have money but does not have the right to provide energy unless he actuall starts a corresponding company and plays by their unwritten rules.Can we still dream about it though?The dream is kept alive like the fire of hope that is only a tiny amber.If you sign up for electricity you are asked if you would like to pay bit extra so your electricity comes from alternative sources.Why is that bad, after all it is green?The initial investment might be huge for a wind farm but after that it is more or less just providing mone out of thin air.You can look the cost up for the new windfarm build near you.Same for the electricity prices in that area.And also the expected output of the entire farm.Do the math and calculate how quickly they break even....Once they do it only profit but you still pay the extra to go green.A bit like the new road that came with a toll....After 5 years the motorists paid it off but 10 years later they are still being charged while the road is disintegrating...Now add electric cars and our constantly rising consumption to the mix...We can't provide the electricity ourselfs as we don't get fully paid for it, we can go off grid either.The atom as the source of electricity is being phased out slowly as well.Finally as some might say, considering the thausands of years we have to deal with the produced waste and what aftereffects the storage might bring.Our providers will keep their grip on us for as long as they can.No government will stop them as in return they wouldn't have electricity.A cold war if you like.We never cared how much fuel our cars use until the OPEC decide to limit supplies and drive the prices up.And you can see the riches especially in Saudi Arabia.For most of the big OPEC players it really does not matter anymore whether or not they have oil or not.They make the same or even more money by other means and more modern means now.After this initial shellshock we woke up and decided that for the shopping trip of the wife a small car with just 4 cylinders will do.Overcrowded cities and roads also pushed us more into thinking small.Again it took force to go further, this time by governments slowy "going green".Emmissions, greenhouse gasses, polution, particles and corbon monoxide...Sounded all godd in the ads but it meant we could no longer afford our old car or even got banned from entering the town center with it.But a lot people still can't afford a modern car that meets the standards.Once they finally got the money and car the laws change again and they need yet again a newer car.This created a huge export and recyling market and profits for other people though.And what differenc did it all make in reality?While we were forced to improve and lose money countries like the US refused for years to even consider reducing the pollution.Countries like China and Russia even increased their pollution to impossible levels.We all remember how Bejing was literally shut down for the Olympics so the athletes have a chance to survive the games...We know how the pollution or global warming problem is misused to make money.The governments get huge payouts in the form of taxes from those cars that can't meet the specs.The dealer smiles with the increased sales of cars.And again the government smiles too as they get taxes from this as well.We know it happened before and is still happening with everything realted to fossil fuels, global warming and pollution, so why would electricity be any different?Reactors and coal fired power plants are phased out with basically nothing to replace them.Solar and wind will provide and till then we keep what we really need to keep....There is no plan for what comes after coal and the atom.There is no alternative.Batteries need electricity.And providers will always be the middleman controlling both the price and the availability.So how does this actually work you might wonder...No matter who invents or produces a new device to provide electricity - there is a very limited market for them.A farmer can't buy a full size wind generator and place it on his land...But an electricity provider can buy thausands of them....And if you go bigger than ask yourself who would need a 10 or 100MW fusion generator?Providing electricity is only a viable option if you go big and if you can sell the excess with a profit margin.Leaves only our electricity providers as customers.If you don't have to care about the buying price because it will be put down one way or the other onto your customers than it is like a credit.Only difference is that once it is paid off you start to get money back!Imagine that for your bank account ;)And if you know what you sell can have a very generous profit margin because your buyer does not care then the solar or wind farm will be quite costly to build..."We know we are not cheap, but who else can deliver you what you need?"And like our big supermarkets there will be an agreement on what the wind generator can cost.Ressources....Be it wind, be it solar or just the modern electric motor in your car - they all require stuff that is very limited on our planet.Take Neodyminum.Without it we have no wind generator or fancy motors as we wouldn't have powerful enough magnets.Vital elements and mineral required are only available in a few spots on our erth in quantities justifying mining them.I won't make this much longer than it already is, so please look up what is really needed to keep our future solow and wind projects alive.Then go and check where we can find thes things in good quantities.Once you did you might realise why the world tolerates the abuse of human rights, freedom or just self expression in other countries ;)If only China would stop today to export and sell their rare earths and prcious minerals basically our entire production worldwide would suffer quickly.Entire industries break down quickly and prices for certain things would literally explode.The US already started to re-open long abandoned mining projects as suddenly even the most costly operations become viable again.Think about this next time you fancy a world free of cars and truck using combustion engines ;)

Topic by Downunder35m    |  last reply

Diy o-ring with glue-gun

For emergencies, but not only: make your own o-ring. use a hot glue gun and some soft glue-stick. look for a round object more or less the size of the o-ring you need. form a steady bead of hot glue around it. wait for it to set. peel it off. if necessary: smoothen down the edges somehow (sanding-paper, file, etc). feedback appreciated. thank you.

Topic by la xerra    |  last reply

RGB Led doesn't mix colors

Hey all I am working with common anode RGB LED. I hooked each leg (red, green, blue) to pins 2-4 of my Arduino UNO. I then hooked the anode to 5v via a 22 ohm resistor. The code I wrote was very simple; turn pins 2 through 4 low, delay 500, turn pins 2-4 high. The problem I found was that instead of the color turning white it stayed red. I tried mixing red with green and red with blue, each time same thing it stayed red. Does this sound right?

Topic by Mpc1055    |  last reply

A helmet of Assassin's creed's alexios

I am a fan of Assassins and want to make a Assassin's creed character alexios helmetHere it is

Topic by nischayajoon  

How do i disable an auto clip limiter?

I have an eb7500pro rack mountable amp running 1800 watts rms in bridge mode and i cant get the amp to turn up to clipping i would like to. i know your not suppose to clip the amps i know all the possible dangers when entering clipping zone. when i turn up the amp to about half 1over4 of the way up and the volume decreases. and when j turn it down the volume kicks back in. when that clip light emits it turns down the volume I know because i play a constant hz tone and slowly turn it up and it turns itself down how do i stop that?

Topic by samhenderson156    |  last reply

Project-Based Learning (PBL) Resources

I'm always inspired by the awesome, in-depth projects teachers are doing with students in different grade levels. From animal research projects in second grade to designing 3D models of Jamestown in Tinkercad with fifth graders or CubeSat projects in High School. There's so much we can learn about PBL from each other! :)What are your "Go To" projects that you do with your students? Any tips for managing class projects and grading (rubrics or scales, etc.)? What about finding materials/resources for projects? My best resource for cardboard was the school cafeteria. :D

Topic by WeTeachThemSTEM  

Archery Load Cell Circuit

I'm looking into a system that will enable me to determine the distribution of load on an archer's draw hand grip, probably as a percentage of the whole load. I have some basic ideas drafted, but before I start re-inventing the wheel, has anyone anything similar set up that I could look at or consider developing.The sensors/load cells must be able to fit between the two layers of a standard archery tab. There must be three sensors, for the three fingers of a normal "hook" grip, and I think either an Arduino or Pi based processor.

Topic by Warleyman    |  last reply

Should (or can) I get a patent on an arduino based project? Answered

I really don't know if I should get a patent or even if my latest "invention" could be patented. This topic will be a bit specific to my project, sorry :(I've posted an instructable of it here (vote it on the arduino contest while you're there!)The first problem is that, almost everything in the project hasn't been invented by me. I didn't invent drums, nor the idea of hitting some sort box or drum to produce sounds, and most certainly not the arduino. Autonomous musical instruments or robot musicians are not new either. Both the electronics circuits and the code might be patented somehow, but anyone with the required skills and with an intention to ignore my patent, could achieve the same results as I did but with a different circuits/code. Which brings me to my second question:Is this really something to worry about? is that common that people get their inventions stolen by big evil corporations? could you realistically win a legal battle against such corporation?... I've been checking a few videos and articles on this topic, including some written by instructables founder ewilhelm saying how he had never heard of this happening. One thing that does worry me is someone taking my project and claiming it as their idea. But I think being featured on this site and on the site too, should be a safe way of claiming authorship.Thanks.

Question by FrancoMolina    |  last reply

Vibration feeder anyone?

I am planning on building some sorting rig.Right now I am quite keen to include a vibration feeder system.You know, like the stff used to transport grain, sweets or aling small parts that run up on the inside of a bowl to come out perfectly aligned.I serviced these systems in the past but never put too much concern into the actual workings.The theory is quite simple.One or two vibrators cause the transported media to move.This works like a sawtooth wave.Slowly up and into the right direction, quickly back to where it started.Adjusting the frequency to change the speed or adjusting the amplitudes to match the weights and other properties of the media is easy - in a properly designed system.I tried to find some easy to understand information on the relations between actuator direction and media direction in relation to the trasport systems shape and dimensions but only got extreme complex stuff.In my small scale tests using simple vibration speakers and a frequency generator I had to relise that it is quite hard to find a proper way of mounting the system.To soft and it is just rattling around, too hard and you need to crank the amp to max to get any action.Orientation and angle of these mounts also affect the direction and amplitude of the swing caused by the vibrations.Straight linear I can do, although still not perfect but anything like these feeder bowls only gives me nice vibrations but no movement.Are there any suitable hobby projects on the web or here?And decent info on the basic design criteria for those feeder systems that are not closely guarded company secrets?

Question by Downunder35m    |  last reply

Best Arduino lessons for different age groups?

I'm always looking to freshen up my curriculum when it comes to introductory Arduino lessons. Some older guides have mistakes that aren't ever corrected, and new features come out that I just don't notice (my students tease me for forgetting about the bulk comment/uncomment menu item, for example). Besides the Instructables Arduino Class and Tinkercad Circuits lessons, what are your best suggestions for introductory Arduino lessons at the grade level you teach?

Question by bekathwia  

HC06 Bluetooth module, can't find it when I search for it

I paired to my HC06 Bluetooth module from my android phone then used application to drive my RC car without any issue. After that I tried to connect from the laptop or even from the same phone but I couldn't find it when I search for it, Although I'm still able to connect through the APPLICATION only and control my RC car.I have other HC06 bluetooth module which I couldn't find it at all when I search for it. so is that a normal problem with the HC06 and is there any solution for it ? or it is just a problem in my installation.NOTE: I used a voltage divider circuit from the Arduino Tx pin to the module Rx pin, there is a red led on the module flashing slowly when I turn the circuit On.

Question by omaralani28889  

CLEAR FILM that is archival, pigment inkjet compatible, and in of itself can be a final product? Is there such a thing?

Problem: I've been calling art stores as well as photography stores, paper stores, film manufacturers, printer companies -- nobody seems to know if there is such a thing as printing onto clear plastic film as a final product. Everyone says their products are meant for transferring or negatives etc. (I tried printing on non-coated Mylar D, and the ink just beads off.) goal: What I have been creating are art pieces on clear transfer film and selling them. I print on them, I paint on them, I apply reflective & dichroic materials on them, and layer them on top of each other; I manipulate the art pieces in every interesting way I possibly can. My collectors and potential clients want to be assured that my pieces will have a long lasting quality to them. I want to be able to give all of the correct information rather than "I don't know". my materials: I use a canon ipf8400 with archival fine art pigment inks. I just need a clear film that is also archival. Or something as close as possible to being the most durable, long lasting material available that is inkjet compatible. There has to be something out there? Or at least a protective clear spray or finish? I can't be the only one interested in creating artwork with transparent qualities? I have been using transfer film, 4ml thick. Does anyone have any tips at all to help me think in the right direction?  question: Is there such a thing as a Clear Film that is archival, pigment inkjet compatible, and in of itself can be a final product? Or what is the closest I can possibly get to that?

Question by LindsayR3    |  last reply

Turn an ATX Power Supply in to a Welder? Answered

I was wondering if I can turn an ATX power supply in to a welder: Before I write down the specs/amps of the power supply, I want to say that I have no experience in welding, I'm wondering if it's posssible to make a small welder out of an ATX power supply. Is there some kind of minimum current that you have to pass to start welding (softer?) metals? The lower the voltage the better right? I didn't give a lot of information, Because I don't know what to ask... Thanks :)

Question by Yonatan24    |  last reply

coin modifying laws?

So my friends and I are planning to sell, well...things (I'm not going to give out any details as of now, later) that incorporate small round metal disks. now in all of our prototypes weve used coins for our purposes and they work great. but for what we make we need to cut and sand coins in different ways. and my friends always tell me "its illegal to change money in any way." But I've heard that its only illegal to modify money to change or duplicate the amount its worth - like making a penny into a dime is illegal but making a penny pac man figure isnt. can anyone clarify this for me? I'm fine doing illegal things like modifying coins for personal use but if were going to sell these I want to be a little more clear as to what is going on.

Topic by berky93    |  last reply

MAGIC BOX pyrotechnics !! ?? lol

I would love to invite you guys to my brainstorm! I need help hahahah. I want to make a box that opens and has sparklers go off, maybe some fog via a smoke bomb? Lights... hahahah. I want this box to perform. I am going to give this to my friend with the gift inside, so I can imagine having little pointers like "light here" etc. I've tried to google this, but I am not finding any crazy magic boxes that do things kinda dangerous like this lol. Have you seen one, have you seen similar installations? My goal is to figure out the best way, and do an instructable on it, how I manage to orchestrate it. Any tips, pointers, experience would be amazing! This box will end up shoe-box size or smaller, and I may line it with aluminum to deflect the sparklers and reflect the light LOL. :D Thanks in advance! <3

Topic by kristylynn84    |  last reply

Any ideas on how to make reel to reel 8mm film rewinder?

I need a manual reel to reel rewinder for 8mm film but am not willing to pay the prices asked for on eBay or etsy. Any ideas for a home made one? Thanks

Question by LindaR101    |  last reply

Heat transfer through cement

I have a garage on top of garage because my land is on a hill. The lower garage is all concrete all the way around including the ceiling. The floor in the upper garage is the cement from the roof of the lower garage. I want to heat the upper garage, but I know the floor will always be really cold because it is cement and the lower garage is not heated. The lower garage does stay quite a bit warmer than outside temps.My question is this, If I heat the lower shop, will the floor in the upper garage and the upper garage that is insulated be warm as well? Or am I better off just heating the upper shop and having a cold floor? I spend a lot of time in the garage and would like it comfortable when I am in there. ThanksJed

Question by jedidieah    |  last reply

Using an inkjet print head on a CnC device.

Ive had a bright idea that in short requires me to mount an inkject on a 3d printer of sorts for printing on a complex shape. Ive only done some cursory searching, but not found a "here is how to drive the inkjet" or "We recommend this model" for my purposes. Im toying with the idea of just ripping up a standard printer and seeing how well I can reconfigure that to my purposes, but I don't think it will do quite what I am looking for (in addition to the X and Y axis, there will need to be a Z, and in the eventual build probably a sensing mechanism to detect the shape it is printing on (im imagining a projected grid, but that is a ways down the line)). I'm going to have to learn a good bit of methodology to write the needed code, which is going to be a blast. But the starting point will be just the x & y coordinates and a DIY mounting of the print head.Any advice out there?I may build it out eventually on a raspberry pi but I haven't gotten that far as getting the mechanics working by feeding input to an Arduino for an almost etch a sketch mode will be my starting point.

Question by anguscormack  

Cotton picker

I need create a machine for cotton picking can anyone suggest an idea for harvesting the cotton upto 150 to 200kg per day so what can I do that and what mechanism is followed for that?? and what are setup should be made for making a machine for that cpacity

Question by SaiV72    |  last reply

is there anything duct tape won't stick to? Answered

I'm planning to make a satchel bag out of duct tape and i've pretty much figured out the mechanics on how to make it. however, for my initial plan to work out, i'm gonna need a sheet of SOMETHING that duct tape doesn't stick to, or at least, doesn't stick to as well. i'm planning to lay on the strips of duct tape on THAT and then move on from there. so, any ideas? wax paper (like the yellow stuff used as backing for stickers)? paper rubbed with oil? a certain type of cloth? WET cloth (haha)? a certain type of plastic?  thanks in advance!

Question by holocausticity    |  last reply

The best way to sew vinyl? Answered

Any suggestions on how to sew vinyl? I have a regular singer sewing machine.

Question by BeSomebody    |  last reply

Roomba and Central Vac

I really don't like cleaning my house but I don't want to live in a garbage house.  I'd like to have a floor cleaning system.  For carpeted areas, I envision the that the system would use a Roomba and dock to a central vac system so that I wouldn't have to empty the Roomba.  For the non-carpeted areas, I'd like to use a Scooba that connects to water and sewer.  What are your thoughts?

Topic by sundet    |  last reply


Hii what is the different btn sp flashtool and cm2 dongle??

Question by Alwatanbhai    |  last reply

School Project - Arduino Personal Locator Beacon

Hi All, I'm currently in Year 12, undertaking my major design project.I have chosen to design and produce an emergency survival kit that comes with an in-built personal locator beacon. The personal locator beacon must have the capability of transmitting geolocation data to emergency services for atleast 72 hours. It must be able to work in remote areas.I have purchased a range of parts in order to help create this project, of which, I will list below.- Arduino Uno r3 Development Board- Arduino compatible Long Range LoRa Shield- Arduino Compatible GPS Receiver Module- 2600mAg Metallic Power Bank- 5/5.8GHz 5dBi Wireless Networking AntennaI have been experimenting with Ardunio & Components for a while and now understand the basics. I have managed to get the GPS module to work and receive geolocation data. However, I have only been able to do this when the Arduino is plugged in and powered by a computer. For my project, I need to be able to send geolocation data to a specific source, whilst on the go, in remote areas.I plan to power my components by using a portable power pack (similar to a portable phone charger), however, I am unsure of how to program the gps module to send geolocation data to the long range shield, which will then send the geolcationd data to emergency services (it can be a proof of concept but it needs to be communicated to something such as a cell phone or a radio frequency).I would really appreciate any advice or information that can help me develop this project or point me in the right direction. Kind Regards,Adam

Topic by awsomeclone2218    |  last reply


I am crocheting a pattern ( kinda skully style).  At the end of the pattern it says to finish sew the brim seam. What is the brim seam?

Question by deelkey    |  last reply

how to make a diy dehumidifier ? Answered

How can we make a dehumidifier, cheap. easy ? Thanks to you guys and girls ;-)

Question by DELETED_zoophar    |  last reply

How To Connect A Stepper Motor to Turn a Solar Panel

I want to use a stepper motor to turn a pipe or 2x2 piece of wood connected to a solar panel. I want this to be a direct drive system. No gears, no belts. I can't find an example showing how I can connect a stepper motor stem/bolt to a mount that it turns, though. I can see them connected in projects, they mysteriously leave out the details on the parts used and the details connecting it or they use gears/belts.

Question by blairr5    |  last reply

How to order the correct ball bearings and threaded rod so that they will seat well and not be loose or have play?

I am trying to design, what will essentially be a very specific miter box / saw guide for a hand saw. Here is a product on the market that is almost exactly what I am trying to build. The only difference between what I need to build and this miter box, is that the miter box from that link cuts at a 90-degree angle to the workpiece being sawn, whereas I need to saw boards at angles much more acute than 90-degrees. There are commercially available adjustable miter-boxes, such as this one, that allow you to set whatever angle you need, and it will still guide the saw straight. However, they are made for cutting baseboards and molding, so the angle-range is only 90-degrees to ~40-degrees or so. I am cutting wooden boards for making, "scarf joints". So, I need to saw through 4" thick boards at an 11-17 degree angle. Where the above miter box saws perpendicular to the board it is sawing, the one that I am building, at 11-17 degrees, will be closer to cutting parallel. The housing, I think I can cobble together from angle aluminum and hardwood. However, I haven't bought ball bearings since I was a kid riding skateboards. I was hoping to take a threaded rod and push it through the hole in some bearings, then use some spacers and/or washers to space them apart, and secure the whole bearings/spacer/bearings sandwich with some washers and nuts. I do not live near a place that actually sells bearings much less carries bearing and threaded rod in the same store. Therefore, I cannot try it all out right there in the store. So I am going to have to order the bearings and the threaded rod off the internet. I need bearing where... Heavy load is not an issueHow fast they spin is also a non-issue.But that are...Shielded from the sawdust (do not have to watertight)Fit snuggly on a threaded rod and not rattle around. A loose guide-bearing isn't much of a guide, eh?Would one of you fine gentlemen help me by pointing to where I can buy 16-20 bearings, a threaded rod that will definitely fit them, and some .50 - .75" spacers (metal or nylon) that will also fit the bearings?

Question by Dolmetscher007    |  last reply