Circuitry Hacks

How to: Build a Leyden Jar Capacitor

How to: Build a Leyden Jar Capacitor

Simple yet effective, capacitors come in a dizzying array of forms and materials, vital to so many circuits for storage, timing, and filtration - the mighty capacitor!  In this installment of the MAKE presents series, Collin Cunningham explains...
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Make a "Joule Thief" Circuit to Extract Battery Power

This week, Windell Oskay of Evil Mad Scientist Laboratories joins me to teach you how to make a super clever little circuit called the Joule Thief! The Joule Thief allows you to squeeze the life out of what most people think of as "dead"...
Superb Wooden Rube Goldberg Machine

Superb Wooden Rube Goldberg Machine

The Marble Lifting Machine would probably impress even Leonardo da Vinci. Mere words cannot describe the play of physics and craft that goes into this machine which has a single task – take a steel marble and transport it to the top of the...
How to: DIY Spy Sunglasses

How to: DIY Spy Sunglasses

Hack a pair of sunglasses to secretly record audio and video and spend less than $40 in the process with this how-to video. To replicate this hack for yourself, you will need a spy camera and black solar shield sunglasses. For detailed,...
Touch Screen, Linux-Based Digital Guitar

Touch Screen, Linux-Based Digital Guitar

Electric guitars require vibrations to create sound.  While they sound cool, this places an enormous amount of restraint on the guitar largely because the you have to concentrate on plucking perfectly and only have one hand free. The Misa digital...
Flexible Interactive Multitouch Display

Flexible Interactive Multitouch Display

In the past we’ve seen plenty of flat, hard multitouch displays. Even a multitouch pad you can build yourself in just 5 minutes. This multitouch pad, on the other hand uses several force sensors covered by a foam pad to read human input. The...
DIY 30KV Voltage Multiplier

DIY 30KV Voltage Multiplier

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Solar-Powered Sun Tracking System

Solar-Powered Sun Tracking System

2 DOF solar tracker based on micro controller and small solar cells as sensors, linear actuators and solar system of panel and battery and charge controller where the battery is the source of power of the linear jacks(motors), this was my graduation...
How to: Reflow Solder Tutorial

How to: Reflow Solder Tutorial

We taught a SMT soldering class at the Atlanta hackerspace ( http://freesideatlanta.org ) focusing on using stencils and solder paste. Here are some shots of a circuit being reflowed on a skillet and inside a toaster oven. Surface tension is able...
Double Resonance Solid State TeslaCoil

Double Resonance Solid State TeslaCoil

A new composition of the primary coil for a Double Resonance Solid State TeslaCoil (DRSSTC). It is a combination of wire and capacitors. By making the coil like this you get rid of all the parasitic inductions of the capacitor bank, it reduces wire...