Posted June 3, 2014 by Chris

"This project is based on ideas from Rickard’s electronic projects page and David B. Thomas VCR Pong. However, I have developed the simplicity even further, eliminating most of the external components. Using microcontrollers with internal 4MHz clock generator there is no need for the xtal. The 12f675 part also operates on wide voltage range, and the regulator can be removed."

Posted June 2, 2014 by Chris

"Continuing my previous post about DIY constant current boost driver for 9 LEDs in series, here is a mod for my burned out desk lamp. I’ve designed new schematics with 4 mosfets in parallel, because this is only mosfets I had on hands and they are pretty low power with high Rdson. So I decided to use as many as I can."

Posted June 1, 2014 by Chris

"In this project, we look at how we can implement a Digital 2.4km Run Announcement System. The system is capable of displaying the time on the LED display once the start button is pressed. At the same time, the infrared interceptor is started, and is continuously checking if its infrared ray is intercepted, and if so, trigger the system to announce the time of interception to the runners, and make a log of the time of interception to the system."

Posted May 30, 2014 by Chris

"This is first in series of articles about project I’ve been building in my spare time since last Summer. Actually it all began when I was researching a topic of modeling human motion kinematics in order to create gesture recognition library for Kinect. This ties heavily into motion theory of robotic manipulators so I also glanced at some designs of robotic arms."

Posted May 29, 2014 by Chris

"A Plasma Sonic Speaker is basically an arc between two point (or in free space aka Tesla Coil) that emits sound. This I believe was discovered when experimenters started trying to transmit audio via Amplitude Modulated Radio Signals using high voltage coils and spark gaps."

Posted May 28, 2014 by Chris

"Hi, I bought two small servo motors last month. I was thinking what I can do with this two servo, since it is only two in number. Then I asked this to my friend Achu Wilson and he suggested me to try a four legged two servo walker and he shown a youtube video in which some one demonstrating it. Then I also got interested to make some thing similar to that."

Posted May 27, 2014 by Chris

"I developed this WSN for a coursework on my MSc and I’m hoping others will find this useful or at least interesting 🙂 I’ve just installed the first parts of this WSN back home to collect sensor data from various outbuildings and it will be part of my new Arduino controlled greenhouse project."

Posted May 25, 2014 by Chris

"…At this moment the robot can measure its speed and regulate its motors to keep a desired speed. This means that when the robot goes uphill it will recognise that its speed has dropped and will increase motor power and vice versa when it goes downhill. The regulation is currently nothing more than: if speed is faster than desired then decrease motor power with a constant amount…."

Posted May 24, 2014 by Chris

"This project is a small LED matrix sign/display/badge intended as an SMD trainer…I designed this version from scratch to make it a bit bigger to allow the use of larger LED’s (easier to hand solder), and use a “better” microcontroller to allow more creative programming (in C)."

Posted May 22, 2014 by Chris

"One day a friend (who is also a Mechatronics engineer) and I decided to build an ultrasonic rangefinder. Sure, you can already buy modules such as the LV-EZ1 from Sparkfun, but where would the fun be in that? Moreover, things get expensive when you start wanting several of these sensors."