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Arduino CAN-BUS OBD Gas Gauge

Posted May 21, 2018 by Chris

"My inspiration for developing this gas gauge was after purchasing a new car (Scion Xa) and wondering what MPG I was getting. After much research on ODBII protocols, and looking into open source software that already existed I delved into my first Arduino project."

OSC and MIDI Foot Controllers

Posted March 8, 2018 by Chris

"The goal of this project is to provide open hardware design of OSC (Open Sound Control) and MIDI foot controllers, primarily targeted for use with SooperLooper, distributed under the GNU General Public License."

ATiny 170×240 VGA with 8 Colors

Posted February 23, 2018 by Chris

"So what can one do with an ATTINY-85 and no other external components, an 8 pin package that leaves ONLY 4 IO lines after you feed it a clock?? How about 4 color rock solid VGA with stereo sound!!! I kid you not, with only 4 IO pins, this little AVR pulls it off."

Triple 8 H-Bridge

Posted August 28, 2017 by Chris

"This is a motor driver board that can drive 2 DC motors in Forward or Reverse with full speed control. It can handle at least 25 amps per channel continuously at 24vdc. I designed it using a basic H-bridge with 4 switches, 1 switch going to positive (+) and 1 switch going to negative (-) for each motor terminal."

Open Source PLC

Posted August 1, 2017 by Chris

"The PLC is a general-purpose controller with a wide variety of applications. It is useful to the engineer, technician, student and hobbyist. All the source files for the small brick OSPLC are provided, including schematic diagrams so that you can build this project yourself or modify it."

Raspberry Pi Serial Breakout Board

Posted July 26, 2017 by Chris

"A simple single-sided board that connects a RS-232 serial port to the Raspberry PI and breaks out some of the PI’s pins for experimentation. The interface board was designed to be simple and used for initial experimentation. It can be built on a single-sided PCB using home-made PCB fabrication methods."

FPGA Driven Nixie Tube Speedometer

Posted July 11, 2017 by Chris

".Anyway, Luke Miller over at FPGA Expert recently bought a vintage pickup truck and wanted to trick it out a bit with some custom electronics. He decided to use GPS to measure speed rather than hooking the speedometer directly up to the truck’s sensors, this way the project could be replicated on any make/ model of vehicle. Luke is using a Pmod GPS receiver which he is then running through his Basys2 Spartan-3E FPGA board to make this thing work.quot;

Raspberrypotter

Posted May 6, 2017 by Chris

"Raspberry Potter is an open source project that lets you control things around your room or your house with a magic wand. Imagine if you had a magic wand to control everyday things. Once you make a Raspberry Potter, you’ll be able to do just that – by drawing simple gestures in the air."

PWM Dimmer for LED Lighting

Posted May 4, 2016 by Chris

"I have recently moved to a new apartment and was looking for a PWM dimmer to control some 12V LED strips. I thought that should be easy enough nowadays but it proved more difficult than I thought. All I found either didn’t meet my requirements, were uggly or expensive. So I decided to build my own, tailor-made to my needs."

Keyglove Tech In

Posted April 24, 2016 by Chris

"The Keyglove is an innovative new way to interact with your technology. A wearable, wireless, open-source input device, the Keyglove provides unprecedented flexibility and convenience for gaming, design, art, music, data entry, device control, 3D object manipulation, and even inexpensive telepresence."