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MCM Electronics Daily Deal and Bulk Bargain

Speed Control of DC Motor Using PID Method

Posted August 17, 2015 by Chris

"The dc motors are used in various applications such as defense, industries, Robotics etc. DC drives, because of their simplicity, ease of application, reliability and favorable cost have long been a backbone of industrial applications. The project provides the efficient and simple method to control speed of DC motor using ATMEGA16 microcontroller and L298N motor driver IC."

Apple Extended Keyboard II Mod

Posted August 16, 2015 by Chris

"The biggest stumbling block to the project was the computer’s interface. The Apple Extended Keyboard II is from the days of ADB, or Apple Desktop Bus. The internet revealed two possible solutions: An expensive and sometimes-hard-to-find adapter by Griffin, or a $16 microcontroller and some DIY elbow grease. Naturally, I chose the latter."

The Wifi Radio Project

Posted August 12, 2015 by Chris

"This page outlines my project to home-brew a dedicated box for ‘tuning in’ these online stations…I wanted to make something to match the other stereo hardware I have. I also like that I can personalize every aspect of the design, and put to use some of the hardware I’ve collected over the years."

The Magic Crystal Mood Ball

Posted July 27, 2015 by Chris

"During my search for a cool design for my lamp, I found this plastic ball that looks like one of those future tellers crystal balls, and I decided to used it in a mystical way. Since my idea became a mood ball, I thought it would be fun to have the mysterious ambient surrounding the future teller’s world, in this case, not future, but present."

Fully Functional Arduino Weather Station

Posted June 21, 2015 by Chris

" The last thing you want to do is clear up your Monday schedule to go kitesurfing and find yourself cursing the gods on a windless lake after two hours of driving. I needed to know the wind conditions of my favorite kitesurfing spot—in real time. So I decided to build my own weather station."

RPM: Interruptions and Interrupts

Posted June 14, 2015 by Chris

"Fortunately in the world of open source technology, the solutions to many technical challenges lie online. This great example by Zitron shows how to use hardware interrupts to read in the data from the hall effect sensor outside of the loop() function."

Build an Arduino-Powered Talking Robot Head

Posted June 8, 2015 by Chris

"This robot head was originally built as a end of the year project for my physical computing class, but over the summer it has ‘learned’ how to talk. The head is powered by two Freeduinos, 3 TLC5940NT chips and an Adafruit Industries Wave Shield. The head is currently connected to a computer by two USB cables, one for power, one for sending it serial commands on what to say/emote."

Simple Infrared PWM on Arduino

Posted June 5, 2015 by Chris

"We are often asked on discussion boards, about conflicts between IRremote or IRLib and other Arduino Libraries. In this post, we present a sketch for ‘Simple Infrared PWM on Arduino’. This is the first part in a 3 part series of posts"

Chlonos An Open Source Talking Multimedia Clock Gadget

Posted May 6, 2015 by Chris

"Chlonos is an electronic gadget with a brain, a display, some sensors and a voice. It’s something interesting to put on your wall. It can measure temperature and light, it keeps track of the time and will tell you about it all."

ATtiny2313 Ballistic Chronograph

Posted May 4, 2015 by Chris

"A ballistic chronograph is used to detect the speed of a projectile shot through a sensor port. The simplest type of chronograph design is based on finding the average speed of the projectile between two ports. This is as easy as dividing the distance between the two sensor ports with time taken to travel between the ports."