Posted October 9, 2013 by Chris

"A geekish clock using a single 8-pin AVR microcontroller that tells the time with LEDs in binary for each decimal digit, much like the famous ones from ThinkGeek, but with some exclusive features such as couting in Gray code."

Posted October 8, 2013 by Chris

"The circuit was build with microcontroller ATmega8.
Here, I’m extending the same circuit to control the DC motor with IR remote control. The motor is fitted on a toy car wheels with gears, as shown in the figure above."

Posted October 7, 2013 by Chris

"The 2009 Robot Rally spotlighted all the flaws that result from a quick 3 week engineering and building project. Time saving shortcuts in code and hardware bit my butt several times. Failed edge detectors – Ouch! Failed beacon tracker … chomp! Ow! Line follower reversal – Arrrg! I’m happy to report I’ve investigated all the issues that cropped up and fixed them all."

Posted October 6, 2013 by Chris

"A modern microcontroller has almost everything that’s needed to implement a touch sensor matrix. There are several sensing technologies: IC manufacturers typically advise using certain tech, sometimes they offer ready to use hardware- or software-based solutions. I was curious to try to implement a sensor matrix entirely from scratch all by myself."

Posted October 5, 2013 by Chris

"The servo motor is widely used in model hobbyist such as airplane R/C model for moving the rudder, ailerons, elevators and acceleration control or in the car R/C model for steering and acceleration control. In this tutorial we will learn how to control the servo motor as well as the simple close loop control algorithm for this servo motor."

Posted October 4, 2013 by Chris

"The objective of the Photovoltaic Martian Bug project is to create small autonomous robots. These robots will be powered by solar panels and intelligently react with their environment."

Posted October 3, 2013 by Chris

This week, PyroEDU’s Analog Electronics course is featuring a lesson on RLC filter design. Here’s a quick intro of what this PyroEDU lesson is all about:

When we combine together a low pass RL and a high pass RC filter, the result is an RLC filter which filters both low and high frequencies out of a signal. In this lesson, we will learn how to build an RLC filter, see what formulas are necessary for designing an RLC filter and experiment with understanding the effect an RLC filter has on an audio signal.

Posted October 1, 2013 by Chris

"This article shows how to do a simple communication via a RS232 interface with a PIC microcontroller. RS232 is a standard for a serial communication interface which allows to send and receive data via at least three wires. With the RS232 interface it is possible to setup a connection between a microcontroller and a PC or between two microcontrollers."

Posted September 30, 2013 by Chris

"The Haptic Creature has three degrees of freedom through which it communicates its emotional state: a pair of ears, which vary in stiffness; lungs, which simulate breathing; and a purr box, which renders a vibrotactile “purr”. The robot has an array of force sensors across its body to sense touch and an accelerometer to sense movement."

Posted September 29, 2013 by Chris

"A few weeks ago I needed an Arduino compatible Micro SD adapter but didn’t want to wait for one to arrive in the post so inspired by the breadboard ghetto Micro SD socket I knocked up a mini shield using a bit of left over stripboard and a SD to Micro SD adapter."