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Building A Bitfrore

Posted July 6, 2015 by Chris

"I recently built another Bitfrore prototype so I thought I’d take the opportunity to capture the whole process from start to finish. The prototypes are completely hand built so its a process that anyone could use to develop their own electronics at home. I use the toner transfer method for etching my homemade PCBs. This process allows a very fast turn around between design and testing."

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."

A Journey Through Microcontroller Audio

Posted July 4, 2015 by Chris

"There are 4 distinct modules, all connected by a 4-wire bus that provides power, ground, and two com lines. I separated the tasks into input-output pairs: audio i/o, user i/o (button and light), and radio i/o. The center module coordinates communication between the others and memory."

PIC Microcontroller ATA Library

Posted July 3, 2015 by Chris

"This project started life a long time ago, with the intention to build an iPod clone, back when personal MP3 players were an expensive luxury and long before you could buy them from China on ebay for less than a light bulb. "

Building A Magnetic Sensor System at PyroEDU

Posted July 2, 2015 by Chris

This week we continue with our new course: An Introduction To Sensors and begin to explore the world of Magnetic Sensors. Here is a quick overview of what we will cover in this lesson:

Magnetic fields may be invisible but they are all around us with different strengths. In this lesson we’ll see how a hall effect sensor can be used to detect a magnetic field and be used as a magnetic motor encoder.

This online course is also be available through:

Simulated PS2 Controller For Autonomously Playing Guitar Hero

Posted June 30, 2015 by Chris

"As an exercise to teach myself a little bit more real-time computer vision/robotics, I wanted to see if I could get a computer to autonomously play certain console video games. Video games are nice because they can provide a relatively decent simulation of a 3D environment, emphasize demand for real-time vision processing, I don’t have to go out in the field to run a test, and there is no penalty for screwing up."

Active 2.45Ghz Tracking-Only RFID Tag Hardware Design

Posted June 29, 2015 by Chris

"The active 2.45GHz RFID Proximity Tag source code can be found at /firmware/pic16/tag-proximity. You can find the BruCON 2011 Tag Encryption Key here. You can find further instructions on using our GIT source code repository here. "

Wireless Power Transmission Science Fair Project

Posted June 28, 2015 by Chris

"Jamison wrapped a second coil and we hooked it up to a green LED. Connect the power, move the coils close together. First light! Yes!! Now it was time to improve Jamison’s project. We tried a full-wave rectifier to increase the LED’s brightness, with not a large (if any) effect. We built a two-stage Cockcroft-Walton generator, with much better success."

Monster 16×12 Grid Step Sequencer Hardware, Built with Arduino

Posted June 27, 2015 by Chris

"For some, there’s the step sequencer you dream of. Maybe it has a massive array of buttons for patterns, capable of spreading musical ideas across a lit grid. Maybe every last rhythm is visible, maybe it juggles layers and patterns with ease. This guy just went and built what he wanted."

Building A Motion Sensor System at PyroEDU

Posted June 25, 2015 by Chris

This week we continue with out new course: An Introduction To Sensors and begin to explore the world of Motion Sensors . Here is a quick overview of what we will cover in this lesson:

Motion detection is vital for most security systems and the PIR motion sensor is a popular choice in that area. In this lesson we will learn how the PIR motion sensor works and how we can use it to set off an alarm when motion is detected.

This online course is also be available through: