Category Archives: Circuits

Collection of circuits, schematics, etc…etc…
stuff to help you get through your apps

How to Build a DIY Interactive LED Coffee Table!


For those of you who want to make an interactive coffee table that will respond to your guests hand gestures, check out this cool DIY interactive LED coffee table, which uses photo-resistors to detect movement.

This is my instructable on building a simple LED table that works and responds in an analog manner. It was to be built of individual pods with 4 LED’s with th

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DIY 1.25kJ Coilgun!


Take a look at this 1.25kJ (at 400VDC) that will seriously electrocute anything with its powerful 4 3900uF capacitors, 78 times the lethal amount for humans.

After 2 long years of on-and-off work my coilgun project is finally completed. For anyone who doesn’t know what a coilgun is, it’s a gun that fires a projectile with

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DIY Wood Stove Thermoelectric Power Generation!

Live in a cold country with a wood stove for heating? You might want to take a look at this video that shows you how you can regenerate electricity from your wood stove.

Here is my Thermoelectric Power Generation scheme using TEC moduals from eBay a small lab hot plate, a heat sink and a small radio I can generate enough power to run. I thought to my self the extreme temp differen

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Electricity Hack – How to Make a Peltier Thermoelectric Cooler!


For those of you looking for alternative ways to create energy when you are camping, take a look at this video that shows you how to make a Peltier Thermoelectric Cooler, which can produce electricity from a camp fire, pretty neat.

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LED DIY – How to Make a Self-Sustaining DIY LED Flashlight!


With a coil, couple miniature magnets and an LED, did you know that you can make your own self-sustaining DIY LED flashlight?

I know, it’s mind boggling that you can build one yourself and it’s so simple.    Now, please add a circuit so it will “charge” a re-chargeable lithium battery, that will make it puuuurfect.

via make, Project Page

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CNC Hack – How to Make a CNC Machine from Printer Parts!


I’ve always wanted to own my own CNC machine so I can start making some cool custom parts.  Well, if you need a simple one that can be used as a laser cutter/engraver, here’s a CNC machine you can make from old printer parts.  Very fascinating.

In this page I will show you how I have build a Router Laser CNC using some part from old printers, a Epson Stylus 800 and another Epson Stylus Color II, (you can use your old printer).

via hackaday,

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DIY Analog LED Clock using a PIC 16f877!


For those of you who enjoy fusion of art and smart circuitry, check out the DIY Analog LED Clock that you will be proud to hang it in your living room.  You know, these days hackers and modders aren’t just hacking and modding, they are creating “new” designs.   Even on the other side of spectrum, we see that designers are using more technology into their artwork.  I love that.

This homemade clock uses a PIC16F877 Microcontroller with a 20MHz clock, it also has a DS1307 real time clock with battery backup.

169 x 700mcd diffused white LED’s con

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How to Make a DIY Acrylic Power Supply!


For those of you who appreciate technology and see-through power supplies, check out this DIY acrylic power supply!

This one has 4 outputs. One 5Volt, one 12V and two individually adjustable outputs going from about 1.5V to 19.5V. Each can draw up to 1.5Amp with a total of 3.5A for all together. The input is a standard replacement laptop power supply 20V, 3.5A. With a stronger external power supply the total output current can be higher, up to 1.5A per output. But currently the 3.5A is more than enough.

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DIY 50s Radio Hacked to Play MP3 and FM!


For those of you early-adapters who are also retro-modders, you will want to hack a 50s radio with MP3 player and FM radio so you can enjoy music with the old vacuum tubes.

The idea is that the mp3 player and the FM receiver’s audio signals are re-modulated by using an AM modulator to keep the sound quality as it was. The radio now has IR remote that is actually from a car mp3 player (see the last image). The radio receives FM stations from a tuner PCB taken out from a working FM radio receiver.

Now thanks to Edo, once again this radio plays favorite tunes throug

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LED DIY – How to make a Touch-sensitive RGB LED Mood Lamp!


For those of you who want to make your own mood lamp, consider making a “touch-sensitive” DIY RGB LED Mood Lamp such as this one that will interact with your fingertips.

I always really wanted a cool LED Mood Light, but all of them I have seen on Instructables use IC’s, and I find IC’s take out some of the fun of building circuits. That is the reason

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