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Spartan 6 – FPGA Based Bus Pirate

Posted April 16, 2014 by Chris

"A FPGA based design with a soft CPU and USB device interface implemented in Verilog. A small USB stack implements a virtual serial port over USB, but could be extended to support other class drivers such as Audio or HID. This board is form factor compatible with the Bus Pirate v3.5 case"

Raspberry FM : Project finale

Posted April 14, 2014 by Chris

"This weekend I finally knocked out the final hardware config for me to consider the ‘Raspberry FM’ project complete. What is this project exactly? It’s an experiment I gave myself to combine a Raspberry Pi, Makey Makey, MicroRAX, and MPlayer to create an auto-on internet radio player. I called it ‘Raspberry FM’ after a combination of the Raspberry Pi, and Soma FM, my favorite internet radio station."

A Simple Ultrasonic Posture Sensor

Posted April 12, 2014 by Chris

"Often we don’t care about our posture which can result in back pain and worse. If someone tells you to sit upright this is easy to do, but it won’t hold on for more than a few minutes. Now wouldn’t it be great to have a device that can remind you to improve your posture?"

Microcontrollers: Analog to Digital Conversions

Posted April 10, 2014 by Chris

Now for some real fun, we’ll take a look at how to convert from Analog to Digital in our new course: An Introduction To Microcontrollers. Here’s an overview of the lesson:

"In order to interface to the analog world, microcontrollers often have an internal analog-to-digital converter. In this lesson, we will test the converter to understand how it works."

This online course is also be available through:

Low Power LED Fireflies

Posted April 8, 2014 by Chris

"…I decided that I would create electronic fireflies as one of my gifts for family. I also decided that I would try to create these on their own dedicated PCBs and housings."

Inverse Panorama Camera Jig (time lapse rig)

Posted April 7, 2014 by Chris

"This is a simple walk through on attempting to build a quick ‘inverse-panorama’ camera jig for time lapse photography."

AVR Powered Inverted pendulum robot

Posted April 6, 2014 by Chris

" I started generating concepts for a small robot late in 2007. Once I had finally settled on what I was going to build, work started on my robot in the summer of 2007. This page is devoted to the robot I ended up creating. Since then, it has undergone several revisions, reflecting my increasing knowledge and skills from my coursework."

Evil Remote Controlled Ghost

Posted April 5, 2014 by Chris

"As I started to get into multi-rotor aircraft, I came across the KKMulticopter platform as a good way to build inexpensive practice aircraft. As I looked at the design, I realized that it would be pretty easy to adapt it to a two-prop tilt-rotor design, but before I could begin coding the software for it, they released a firmware for just that! When I saw this video, I knew I was going to have to build one… and that I would use it for evil."

The ‘Real’ Dropbox

Posted April 4, 2014 by Chris

"The Real Dropbox is a interactive scanning device directly connected to the users dropbox account. Initially the concept suggested further functionality such as implementing the ability to make phone calls using a skype account and a earphone. The goal was to produce something out of an idea, that could indeed be useful to someone. Even if it was only ourselves."

Microcontrollers: Timers and Timing

Posted April 3, 2014 by Chris

This week we’ll be looking further into microcontrollers with some Timers and Timing in our new course: An Introduction To Microcontrollers. Here’s an overview of the lesson:

"All processors use a master clock frequency to execute instructions and microcontrollers are no different. In this lesson, we will explore the relation between processor speed, instruction timing, and internal timer modules."

This online course is also be available through: