Circuitry Hacks

USB Breadboard Power Supply

USB Breadboard Power Supply

Today we turn a 7805 Voltage Regulator and 4 AA batteries into a very simple Power Supply to charge anything that runs off USB. Breadboarding circuits are...
How to: Etch a Printed Circuit Board (PCB) with Acid

How to: Etch a Printed Circuit Board (PCB) with Acid

They will help you avoid pitfalls and get your project up and running fast. In this DIY episode, see how to etch a printed circuit board (PCB) with acid.  Circuit Boards, nearly every modern electrical device uses them, but how do you make your...
How to: Physical Flag Alert for New Email

How to: Physical Flag Alert for New Email

Learn how to use microcontrollers to control just about anything as we build a device that raises a flag every time you get a new email!  Microcontrollers form the heart of many electronics projects big and small. David uses them constantly for ...
DIY Touch Screen Balancing Surface using Servos

DIY Touch Screen Balancing Surface using Servos

Using a touch screen, these DIYers built an self balancing surface which automatically tilts itself based upon the position of any object placed upon it. In the video demo, the surface automatically adjusts to the ball, keeping it directly the the...
Car Controlled using a Cell Phone

Car Controlled using a Cell Phone

This project was done for the completion of BSc degree in computer systems engineering in Palestine Polytechnic University. --- This Project is about using the mobile phone as an advanced Remote Control for a car, by installing a central locking...
Peggy 2.0 LED Array Running Video at 30 fps

Peggy 2.0 LED Array Running Video at 30 fps

This is a demonstration of my modified Peggy 2.0 LED sign. In this video I'm using a custom Quartz Composer plugin that transforms movie frames to a serial stream to pipe 30+fps video to the display. More information (plus pictures/videos) at...
DIY Camera Stabilizer

DIY Camera Stabilizer

This video was created to show the action of the gimbal on my DIY Steadycam. This project shows the potential of Steadycam possibility for the lighter sub-compact Hybrid Camcorder Market. I have the Jazz Elite HD178. Inspired by the Hague MMC. ...
Ultrasonic Pet Water Dish Monitor

Ultrasonic Pet Water Dish Monitor

Using an Parallax ultrasonic sensor, an Arduino and a computer this Ultrasonic Cat Water Dish Monitor project will allow you to monitor the cat dish level from anywhere. I think a cool upgrade would be monitoring and record the time and frequency of...
DIY Surface Mount Soldering using a Skillet

DIY Surface Mount Soldering using a Skillet

You may remember the Sparkfun article a few years ago when they experimented in using a skillet to reflow solder on SMD parts. Limor Fried of Adafruit Industries has made a new version of the skillet that has an Arduino for a brain and can process...
1600 Volt Can Crusher

1600 Volt Can Crusher

You can buy can crushers at Costco, place your can in the opening, pull a lever and viola you have a squished can. Of course you can achieve the same results using some high voltage electronics. Bob Davis has the right idea here, he is letting...