Posted October 26, 2013 by Chris

"Why? Because I can. To learn how electronics behave at cryogenic temperatures. And just curious how much juice you can squeeze out of AVR if you push hard enough This also produced some results relevant to desktop processors overclocking with liquid nitrogen cooling."

Posted October 25, 2013 by Chris

"A lot of people asked if we could enable wireless streaming for it. I was personally very excited about that since I have been playing with the thought for quite a while, so when the official camera module for the Raspberry Pi became available I bought it straight away."

Posted October 24, 2013 by Chris

Can you believe it! We are on our second to last lesson in our PyroEDU Analog Electronics course…only 1 left after this! In this Lesson, we will expand on the Intro To OpAmps from the basics course and actually build an OpAmp Amplifier. Here’s a quick intro of what this PyroEDU lesson is all about:

A different type of standard amplifier uses what is called an op-amp. This type of amplifier is very easy to setup and design with widely available formulas for how they work. In this lesson we will put these equations to work and build a basic 741 opamp amplifier, testing it out with an audio input signal.

Posted October 23, 2013 by Chris

"The project consists of both a custom hardware front-end for data acquisition and an Android application for visualizing the collected data samples to the user. Data is transferred over USB to the Beagleboard running Android, and then plotted on an external screen."

Posted October 22, 2013 by Chris

"The ultrasonic haptic vision system enables a person to navigate hallways and around large objects without sight, through the use of an ultrasonic rangefinder that haptically interfaces with the user via tiny vibrating motors mounted on the user’s head."

Posted October 21, 2013 by Chris

"I was looking for a way to handle wireless communications between two Arduino boards. Other options like Xbee or Bluetooth were going to cost $50 to over $100. Then I found a cheap RF transmitter and receiver at Sparkfun. The total cost is only $9!"

Posted October 20, 2013 by Chris

"Do you want to control your Arduino with an IR remote? Do you want to use your Arduino to control your stereo or other devices? This IR remote library lets you both send and receive IR remote codes in multiple protocols. It supports NEC, Sony SIRC, Philips RC5, Philips RC6, and raw protocols."

Posted October 19, 2013 by Chris

"My original plan for a final project, way back in week 1, was to build a internet-connected drum that counted politically sensitive numbers….However, after struggling for a week and a half…we gave up on Saturday night. [Instead we implemented] something akin to a VOIP over Internet Zero – the thinnest, cheapest digital audio communication possible."

Posted October 18, 2013 by Chris

"Well, it’s elementary simple in theory, how to do sound localization based on phase difference of signals, that received by two spatially distant microphones. The Devil, as always, in details. I’ve not seen any such project created for arduino, and get curious if it’s possible at all."

Posted October 17, 2013 by Chris

This week in our PyroEDU Analog Electronics course, we dive into transistor amplifiers. Here’s a quick intro of what this PyroEDU lesson is all about:

When it comes to analog electronics, amplifiers are just as important as filters since they serve the purpose of amplifying filtered signals. In this lesson we will build a simple single transistor amplifier and see its effect on an AC sine wave input.