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My Business Card v2 (PCB Card)

Posted January 11, 2016 by Chris

"At the end of this month, I’ll be leaving my current job. I therefore thought it’d be a nice occasion to build a new business card for my future interviews. You may remember the first version of my business card made more than one and a half years ago (time flies!). It was basically made of two PCBs soldered together."

OSC and MIDI Foot Controllers

Posted December 10, 2015 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."

Raspberry PI Serial Port and Breakout Board

Posted November 5, 2015 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."

Receiving SMS Notifications From Your Washer & Dryer

Posted September 16, 2015 by Chris

"In this post, I’m going to cover a new project I recently finished – creating a device that monitors a washer or dryer and sends a text message when it detects that a load of laundry has finished. Beyond the novelty and simplicity of receiving a text message when the laundry is done, I built this device for two reasons."

Making a Web-Controlled Robotic Arm

Posted August 31, 2015 by Chris

"As part of Programmers’ Day celebration this year, Azoft web developers decided to surprise our fellow Azoft employees with a competition. To try something new and unusual, we created an internet-controlled robotic arm."

Apple Extended Keyboard II Mod

Posted August 16, 2015 by Chris

"The biggest stumbling block to the project was the computer’s interface. The Apple Extended Keyboard II is from the days of ADB, or Apple Desktop Bus. The internet revealed two possible solutions: An expensive and sometimes-hard-to-find adapter by Griffin, or a $16 microcontroller and some DIY elbow grease. Naturally, I chose the latter."

A PIC18F2550 Based Computer Status Monitor

Posted July 25, 2015 by Chris

"This project is a USB based computer status display. Downloads at the bottom of the page…The firmware uses microchips USB stack. The files included in the USB folder are from the ‘Microchip Libraries of Applications’ I used version v2012-08-22 of this…The support application was written in C#. Some things of note…the file HIDInterface.cs is an invisible form."

Mac ROM-inator

Posted July 23, 2015 by Chris

"Add a bootable ROM disk to your vintage compact Macintosh! Replace the startup sound, change the Happy Mac icon, edit the ROM disk, or tweak the ROM code behavior. The Mac ROM-inator Kit replaces the stock 64K or 128K of ROM in a compact Macintosh with a full 1 MB of flash memory. Once installed, the flash ROM’s contents can be updated from within the running Macintosh, allowing for crazy customization experiments."

Sniffing Proprietary 2.4GHz Signals

Posted July 9, 2015 by Chris

"In this short article, I present a nifty technique for promiscuously sniffing such radios by (1) limiting the MAC address to 2 bytes, (2) disabling checksums, (3) setting the MAC to be the same as the preamble, and (4) sorting received noise for valid MAC addresses which may later be sniffed explicitly."

Simple PWM DC Motor Control Using MOSFETs

Posted July 5, 2015 by Chris

"…Here is a very simple project of controlling a small DC-motor (taken from an old personal cassette player) with ATmega8. The ATmega8 has three PWM channels, out of which two are used here. PWM waveforms are fed to MOSFET (RFD3055) H-bridge."