Need to make a ticket dispenser be able to have four press able buttons! Help please

The two files there are what i am using i am trying to create a device that i can use a solar panel to run a ticket dispenser. The buttons need to do the following Button 1= 1 ticket Button 2= 2 tickets Button 3 = 3 tickets Button 4 = 4 tickets There is an attached diagram of the ticket dispenser i am order. I can order any type of buttons. If you have any suggestions please feel free to help. Thanks!

Topic by Zapher   |  last reply

Capacitor charging circuit from a Mosquito zapper bat.

Hi, I want to make a coil gun from a Mosquito zapper bat can any buddy tell me that how to make it from parts like 400 volt capacitors (normal or siliocon coated) , Mosquito zapper bat circuit ( Used it because it makek an output of something 2000 + or - volts @ something 2.1 volt input ) circuit digram i will upload soon ,etc. i want to operate it @ 1.5 volt. can anyone help me in doing it and find me following answers = 1) circuit for charging the capacitors bank safely with over charge protection ( with thermistor or something like it) 2) led based capacitor charged indicator (specifically single led based) 3) any other circuit by which i can make a capacitor charging circuit with input 9 volt battery and output 800 volt. 4) also any voltage amplification circuit with input 9 volt battery and output 800 volt. 5) please tell me which parts to use like diodes, transistors, LED diode, resistors, transformer, thermistor, etc.

Topic by manpatpro   |  last reply

Video projection on glass?

Hi I was doing some resources on how to achieve a rear projection on transparent surfaces like glass, but without of much success (there are projects on this site, but all are using a black projection material). I would like to do it on a shop window using a projector. I have found out that I need some special foil to get this working, but most of them are black and not transparen and there are a lots of brands. I am wondering if there would be a DIY solution, maybe a frosted white sticker cut to the size would work, to still keep a level of transparency on of the window. Suggestions are welcomed! Thanks!

Topic by vedtam   |  last reply

Impressoras fora de linha

Ola alguem tem alguma coisa de como inventar alguma coisa com impressoras multifuncionais, matriacais e só impressora, tenho varias aqui e gostaria de se alguem tem alguma ideia para aproveitar elas bem vou aguardar, se não pudermos nos corresponder por aqui, meu e-mail é

Topic by rosane62   |  last reply

Show off your sigs

Lets see your sigs! Post a reply with your best forum signature, because I wanna see what everyone has got! Mine is here!

Topic by Henry Jones   |  last reply

tesla coil wire

What Gauge. Wire would you use to make a 2 foot tesla

Topic by wiccakingkamui   |  last reply

FIXED: Power Mac G4 1.25 Duel Mac OS X 10.5.8 Freezing after 6 Minutes!

A couple of days ago I ran across the problem that my mac would have a high CPU usage and kernel panic or freeze after about 6 minutes.  First I plan the put the hard drive in my PC and back up all of the data, as I have important stuff on it.  The high CPU usage was caused by a process call mds, and mdworker.  Both for the PowerPC Architecture, because it is a G4 PowerPC Processor.  The computer is maxed out at 2 GB. of RAM.  The fans sound like a jet engine on boot up, but then ramp down one the desktop is loaded.  Please help! System Specs: Duel 1.25 GHZ PowerPC G4 2 GB DDR RAM Mac OS 10.5.8 200 GB Seagate hard drive (from when Seagate hard drives were good) DVD Combo Drive PCI FW 800/400 USB 2.0 Card USB 4Ex 1In USB 2.0 crad 128 MB Graphics I have attached a video so that you can see exactly what happens:  

Topic by iApple guy   |  last reply

Noobariffic LED art question (Batteries)

Uhh, hi everyone. I have a super basic question, and I'm going to appeal for help because I'm running low on time for this project. I have a signpost I want to light up with about 100 3volt LEDs. What kind of power source should I be looking at? Would 4 AA batteries suffice? I've seen online calculators for determining resistors, but not for an ideal power source. Do I just wire up as many batteries as I want and get the proper resistors? I'd like this thing to light for at least eight hours on a full charge, so I can swap batteries daily. Thank you in advance! I'm dumb!

Topic by bicycle_samurai   |  last reply

Quick SMD question

I am just getting into SMD work for PCB's & I was curious when I am using the electric skillet method for solder reflow does the PCB have to sit on the skillet itself or can it slowly pass over & the heat that is coming up from the skillet still cause the solder to flow like it would sitting on top.

Topic by sofiadragon1979   |  last reply

how do you find the right (com port) for the arduino

please help me i cant find the right com port help

Topic by Jordan arduino   |  last reply

Electronics dummy needs your input please

Hi, I want to run a battery operated item that takes its power directly from my 50cc mopeds 12v 4ah battery.  The item takes a minimum of 60w and can take upto 100w which I'm told, could drain the mopeds battery too much even when the engine is running at full speed charging the battery. Can I connect an adustable 6-24v step up inverter to the main bikes battery and use it to install and charge a second 12v bike battery purley to power the 60w to 100w electrical item while its in use, saving my main bikes battery to besure it won't run out of enough power to start the moped after Ive finnished using the electrical item? Im sorry but I not good at electonics and need your input to help guide me to run the item from my 50cc scooter/moped.

Topic by selectauto   |  last reply

An interesting clock

Hello! I need a scheme for a fading clock. Please, has any body made something like this?  The idea - based on the fadenes on each number you can tell what time is it.  The GIF is very basic.

Topic by Thevilcins   |  last reply

Fractal Magic DIY HDTV Antenna Kit Now Available

A kit containing all the materials needed to build the Fractal Magic DIY HDTV Antenna is now available on ebay as Item #321089509004.  This kit was put together as an aid to those people that don't have the time, or inclination, to go hunting for the materials needed to build the antenna.  This is the link to the new kit on ebay:

Topic by tigers58   |  last reply

I strongly DISLIKE Instructables. RELEASE ME!

INSTRUCTABLES doesn't play fair or right. It doesn't offer the basic-most options of blocking or unsubscription. You don't let us stop receiving comments. Shame on you. Time to get up to date and the way you should be. Sheesh! Remove me from any and all membership.

Topic by mediabeing   |  last reply

Household Hacker

There's a man on Youtube who is trying to convince everyone that you can do some ridiculous technological feats. His username is Household Hacker, and he has nearly 3 million views on just one video.*run a TV off of a AAA battery, *intercept cell phone calls with a universal remote*charge an ipod using only an onion and gatorade*make a hi-fi speaker out of a penny, a paper plate, and a sheet of tinfoil Although many of us realize that this is fake, a lot of people think it's true.'m sure some of you will find it funny, while others won't. I'm still trying to figure out which side I'm on with this.

Topic by Fenwick   |  last reply

Sorting Machine

I am wanting to make a sorting machine for my autistic son, so he can learn how to tell different materials from each other & also different colors from each other.  I know that there are a few things that I want in it & also a few things that I am sure that I will need but I need a little assistance on how to go about it. I know that it will need a load sensor for the weight detection, & light sensors for detecting the color (I'm not too sure that is what I'll need), & I am not sure how to make it detect the materials though.   To give a small overview of how I want it to work is that he will place the colored block (he has some that are foam, some are wood, & some plastic ones) or a toy car (die cast) & he will drop them into a hopper that has a conveyor belt that will drop the toy onto a lever that will slide the toy onto a scale w/ a sensor to tell the color (or stripes) on the toy & also it will then be swept to the next station where it will tell the material the toy is made of & then drop it in the proper hopper.  I would also like indicator lights to show where things are going to show him what's going on if he'd like to watch. Can I get some help on this please.

Topic by sofiadragon1979   |  last reply

Things to make out of old PCBs

I have some old PCB scavenged from some electronics and a router that no longer worked. They are quite big. I may scavange some parts from them in the future but they are pretty much useless but they look cool. I was wondering what i could make out of them something decorative or even functional. 

Topic by mattdenney   |  last reply

Can I use a dpdt center off?

I recently tried out this project Now I dont have any idea how to read a schematic, but looking at the various photos, and a diagram that someone posted, I did a pretty good job of putting it together. I didn't realize that I had bought a dpdt center off switch until the the store I bought it from closed.  So, I wired the center off switch just like the regular dpdt switch is wired in this diagram. Im guessing that I need to wire it differently, because Im getting unexpected results. Any advice would be golden, thanks a lot.

Topic by doctorly   |  last reply

Need help with b88an eprom

Evening all, I have a martin 218 disco light that i would like to flash a new firmware to. I've taken a look at the chip and this is the model number ST - B88AN 9605E Image - Can't seam to find any infomation on the chip :( i wondered if any one could point me in the right direction on what eprom programmer to use? Rom link -;=RoboScan+Pro+218+Mk+II&thisprod;=roboscanpro218mkii many thanks

Topic by gareth_2008 

Opening a techshop

JUST A SIMPLE QUESTION  Whats it take to open a techsop ? and is there one planned in or around Cincinnati  Ohio anytime soon ? Well a couple questions but good ones ! Fretted

Topic by fretted   |  last reply

How to control Stepper Motor with Integrated Controller, with Arduino

I salvaged a few big stepper motors from a large Laser printer. Unfortunately they all have integrated controller boards. I would like to control them with an arduino. I am aware that an option is to remove the PCB then use a regular contoller. I would prefer to use the integrated board. The boards have the following inputs: 24V GND P/S LD CLK +5 GND The high and low voltage and ground are obvious. CLK is the clock speed (which I half understand). LD is Load?? P/S is pulse?? The board has an SLA6024 with a nice heatsink. (perhaps that helps. I am after a wiring diagram and arduino sketch to control the motor for a CNC machine. Your help is appreciated. Attached are a few images.

Topic by craigevert   |  last reply

Infrared transmitter and receiver

I want to make a gadget which sends a few kb of data via infrared and also receives data via infrared with a timestamp. However, I am stuck as I have only used arduinos before and I have to design a circuitboard which I have never done before, with PIC microcontrollers (must be cheap ones). I need help a) choosing a microcontroller and b) assembling all the components into a circuitboard (ir transmitter, receiver, microusb port to transfer data to pc, battery). Gadget will eventually be portable so make everything light. Thanks Khalid

Topic by khabro   |  last reply

burn out light in flickering LED without killing flicker chip

Hi.  I want to use a flickering LED (like the kind you'll find in dollar store candles) to make a different LED flicker (because I don't want yellow and can't find any other colors).  Should be fairly simple.  However, I don't want to use up my battery powering the yellow light.  So my question is, does anybody have ideas on how to fry the light without killing the flicker-chip along with it?

Topic by aliasjanedoe   |  last reply

Guitar Pedal Help

Hello there, I am currently fixing a VOX Wah Wah pedal. The bypass works - the wah wah effect does not. How exactly does one check to see if each individual component is working? Is it by using a multimeter? How exactly can I do that? (I've put in a 9v battery and tried seeing if there was voltage around the circuit, but I think I am doing it wrong.) Can anyone give me some tips?  Here is a picture.

Topic by Grizzly_Bear   |  last reply

How long a instructable be approved

I just want to know how long a instructable be approved. 

Topic by teribithia   |  last reply

75 LED VU Sound Meter

Hiya, i want to put 75 leds either side of my sub woofer which act as a sound level meter.  there's a picture shown on how it would look like. 40 Green LEDs 20 Yellow LEDs 15 Red LEDs im have difficulties trying to find the perfect circuit right for this project. any ideas? thanks in advance. 

Topic by Major_M   |  last reply

HV capacitor bank charge indicator?

Hello! I have a capacitor bank with three 330v capacitors (from disposable cameras, of course... those things are awesome) connected in parallel, but I'm planning to add more. I'd like to indicate when the device has been charged using an LED, but I'm pretty sure that most LEDs can't handle 330v. The disposable cameras often have indicator lights, so how do they do it, and how can I implement it with more capacitors?

Topic by SirCheez   |  last reply

PCB Trace Width Questions

Hello instructioners, So i am working on a PCB to use my XBOX 360 power supply as a standard 12volt 16 amp without hacking it apart. I've taken the female plug from a dead Xbox and I've recreated the layout in ExpressPCB. my only issue is being that its 16 amps @ 12volts is the trace widths to hold that much power are ridiculously wide we are talking 7mm or there abouts. I used several different online calculators to determine trace width.  My question is..  how small can i get away with for traces and still get 16amps.. is there a way of bridging the front and back side of a 2side PCB to allow for more amperage on smaller traces? i am really at a loss here. since my PCB is set at 38mm by 38mm and the connector size is 27mm long by 23mm wide. with 7mm wide traces i can't connect all the power pins together and all the ground pins together and route them out. Now i realize the 16amps is max draw but i'd like to plan for a max draw situation that way i feel confident enough to not have to check it all the time to make sure its not melting. Below is an image of the current board in Express PCB the labeled Thru-hole are connections i will need to make for this all to work. the other remaining holes are for mounting the female jack securely. The three yellow boxed connections are 12v+ The three greyed boxed connections are gnd ENG is bridged to +5 to make the XBOX PSU provide 12v

Topic by jgosselin   |  last reply

Where is My instructable?

Hi, Why can't i find my instructable on the website? the link is here Do i need to make it into a step by step on instrucatbles or is it ok how it is? Let me know thanks

Topic by djrobo   |  last reply

I've made a high speed photography device [instructable included]

Why I did this project? A friend of me who's really passionate about photography showed me some high speed photography examples. And how expensive the equipment you need is. I said there must be a DIY solution for that and I started tinkering. Now it's finished I'm amazed by the results I get from it.

Topic by geo bruce 

Cell Phone Killer & Now Texting Problems

I need help! The ditsy blonds , brunets, and red heads are trying to crash into me. They are on their cell phones, everywhere. Need someone to invent a signal blocker (killer) that cuts the signal when a cell phone is brought near a persons head in a vehicle! Cops are not enforcing the law. People are crashing. Wait till the statistics come out. One in four ? or more! Help, can anyone invent this dearly needed device? Maybe get them installed in all new cars? Now its young people TEXTING and crashing and dying! 3,000 this year from Texting Auto Accidents, they were not accidents, they were stupid texting idiots. lLife is more important than stupid messaging! Wake up, stop TEXTING, and live!

Topic by triumphman   |  last reply

home security system based on a gprs modem

Hello, I want to develop an ASP.Net web site using VB.Net for receiving data from a device. The device will send data to the server where the website is placed. My question is: can I write my script in VB.Net for getting the values from the device and displaying the same information into the web server database and how should i do this and also i want to do this through dynamic it possible..if yes then how will be the interfacing be done ? i have the code but im confused about the interfacing part... how do i interface with the gprs modem using j2me without using a pc...i want to use it to send a sms through the gprs modem in a home security system to a predefined mobile number... thank you...

Topic by hermionee   |  last reply

Schematic Symbol

In this schematic, At the top middle there is a symbol "ODD" that is enclosed in a circle. Can anyone tell me what that is? Im assuming it is the audio jack, but i may be wrong, Thanks

Topic by Grizzly_Bear   |  last reply

Physics Illustrator on NON-tablet PC

Well, I've recieved a private message from well over fifty people in the past 30 days requesting that I re-compile and distribute the Physics Illustrator, so I got off my lazy butt this morning and made it. links are updated and working.

Topic by bleachworthy   |  last reply

Arduino COM3, COM4 HELP

Hey, I recently bought an Adafruit Motor Shield 1.1, but i'm having problems programming it. Everytime I try to upload a program, it tells me it cant find the COM4 port, only the COM3, which doesnt finish uploading. Also, COM4 works fine when I detach the motor shield from the Arduino UNO and play with LED's. I'm only a beginner, so I have no idea what to do.

Topic by vek11   |  last reply

Want to learn image encoding & decoding????

I remember how i learned html css xml by opening files in notepad also I remember once i tried to open a 1X1pixels .bmp image in hex editor but it was all blur everything went above my head i was not able to locate magic no. & changing some string made it invalid file. So in short i want a book/ website/ instructable or anything which can teach me to edit image file by watching them in base 16 or base 2 languages or somthing like that . also if there is nothing just tell me the easiest encoded image format maybe i get lucky trying myself. Thanks in advance

Topic by Atul009   |  last reply

IMPORTANT question about my curcuit

I have 6 of these and they are perfectly set up and now i have this for a remote control and finally i have this battery to power it all can someone please tell me if this will work to be just a remote control led system  

Topic by dsl158   |  last reply

Hardware/software for indoor digital signage?

Hi, What I would like to build is a digital signage kiosk. I am using a 32" LCD display and wood for the housing but I can't figure out in which direction to go regarding the hardware/software which would breath life in this stuff. Room is not a problem inside the housing, so I could go mini or a normal pc, x64 or ARM. The interface would be rendered in HTML (+java script for animation), which would contain some short (1-2 minute) video clips, but overall the requirements are not that big. So here comes the software decision: windows or android??? Android with smaller lighter (energy saving) hardware or the ARM powered Raspberry Pi is tempting, but maybe in the future I would incorporate touch capabilities which may need a more sophisticated hardware...I am confused, which way to go???? Regards, vedtam

Topic by vedtam   |  last reply

Using a mounted drill to power axle mounted device

Hi, I have just constructed a chicken plucker as in the photo. As an initial attempt the device worked really well - except for the connection of the drill to the axle. This was not well aligned so it ate the threaded bar which was trying to pull itself out and not helped with the thread direction. Are there examples of how to better power such a device?  I would like to be able to re-use my drill, I suspect properly aligned would work better. I could also swap to a non threaded bar but would need suggestions on how to keep the plucker barrel in place. Cheers

Topic by expatty   |  last reply

Trying to make a table fan out of an old RC helicopter

I had an old rc helicopter lying around and I thought I could make use of it by using it as a table fan to cool my pc, now I don't have the remote for it, nor the battery pack that came with it, all i have is the board and the motor. I don't exactly know how these work but I've tried to connect the motor directly to a 9v dc transformer and it didn't go very well, the rpm was too low compared to what I would get when i used it with the helicopter's remote control, so my question is that, is there a way to increase the rpm on it without the remote control?

Topic by m0ps   |  last reply

trying to feed video into a 3.55 mm port on car dvd

My car dvd player has twoscreens. One DVD player feeds the other screen when you select either one to act as an A/V in. It accepts the video feed sent from one player to the next via a 3.55 male to male cable. I had this idea that if the one screen receives a video signal from the other player than I could bypass the DVD sending the signal and send a video signal from another device (my iphone 4) using the same method. I bought a Iphone 4 to rca audio and video cable to run the video feed out of the phone. THEN in theory I thought that an RCA to 3.55 male converter would allow me to run the video line out of the iphone into the DVD players screen. I would have to sacrfice one audio line (left or right, didn't matter) to plug the video into it BUT I thought in theory this wouldn't matter as audio/ video RCA seems to send video feed just fine. NOW, I have it all in place but it doesn't work. Any ideas how I can make this 3.55 female line in on the DVD screen get a video signal from an iphone?  Thanks for any advice here.

Topic by jackblasto   |  last reply

Stanley Kubric, I feel your pain!

I have discovered that it is a major pain dans la derriere to take a decent photograph of an object that is, really, a near-featureless shiny black box. The best I've come up with so far us to stand a candle inside.  My camera is auto focusing, and it keeps locking on to the reflections in the shiny surface - I want to take photos of the object,  not of me or the room around me. Any suggestions?

Topic by Kiteman   |  last reply

Cheap 3D printing company?

Hi, I would like to get a 3D print of a model I made. I've heard a lot of good things about Ponoko. I exported my file from SketchUp to a Collada file(*.dae), and then uploaded it to I selected the material, and this is what I found out: It would cost me $200 for a 3-inch cube, with the cheapest material(durable plastic)!!! Does anyone else know of somewhere where I can buy reasonably-priced 3D objects that I design(<$70 USD)? I'm not worried about shipping time, as long as i get it within a month.

Topic by metrogdor22   |  last reply

Using a motion sensor to trigger sound

Hey guys, I'm trying to trigger audio with a PIR sensor but with no joy. I was hoping that someone on here would be able to help! I've got: Oomlout SPD61 PIR sensor Omron 5v relay g6a-234-bs Voice recorder Cebek C9701 5v Voltage regulator L7805CV with 9v battery attached and 8ohm speaker (these both work fine). Can anyone draw me a diagram of how I'm supposed to connect the sensor to the relay to the voice recorder? I would be so grateful!! Dolly x

Topic by Dolly Mix   |  last reply

Hartley or Colpitts oscillator

I need Hartley oscillator or Colpitts oscillator. I tried a lot but failed. I am simulating circuits on multisim but not been able to get sine wave. Can anybody help me with that?? I am using these oscillators because I want high power oscillator in high frequency range.

Topic by m_uamir72001   |  last reply

PDF support

Hi I observed recently there's no any link to save some jobs on PFD! Is somethinh really incovinient!!!! Usually i save the PDFs and then i read them if I like to make the DIY work. Can you put back the save option in PDF? simcerely Agis68

Topic by agis68   |  last reply

Slowing down a computer fan for miniature terrain

Hey all, Kind of new to doing these things but i have a question. I want to slow down a 80mm fan so it spins really slowly. I will use this for a display board for wargaming miniatures (warhammer 40k). My question is i know how to connect a 9v battery to the fan and get it to run with a switch but how would i go about having it go really slow. If i put a resister in will that work and if so which one to use thanks Steve

Topic by the real axl rose   |  last reply


Hey!!i started working on a project based on ldr and i realised dc motor and ldrs don't work together so before i buy ac motors i wanted to ask that will it work??thanks in advance.

Topic by robo10302   |  last reply

how many ohms does this resistor have in the led


Topic by dereklevine158   |  last reply

Epilog and Pocket sized electronics challenges

Hi, I would like to submit an instructable to the Epilog and Pocket sized electronics challenges. It is a spark/electric arc generator, which has many uses such as using it as a spark gap radio transmitter, igniting flammable gasses or liquids (camping stoves), or using the high voltage to charge capacitors. The circuit is based on that of a DIY stun gun, so the project could be used as a stun gun. In the rules it says the project can't be 'potentially dangerous'. So would this project be disqualified from the challenges for being too dangerous? I would of course warn people not to use it as a stun gun in the instructable.   Thanks in advance :) Detective Inspector Me

Topic by Detective Inspector Me   |  last reply