News & Articles

Get started learning to build your own electronics by following our FREE online courses below!
Learn More »



Build Like A Pyro!
Find many of the parts used on this site at our favorite online electronics shop
Take Me To The Gadgetory!

MCM Electronics Daily Deal and Bulk Bargain

The Music Math Art and Science Electronic Book

Posted December 15, 2014 by Chris

"The Music,Math,Art and Science Electronic Book contains 4 pages that treat subjects like Music, Maths, Arts and Science and I thought it to be an inspiring introduction to the first year of Primary School that my niece will start this September. The book contains movable parts and uses the electrical capacitance of the human body to activate sounds and lights and other sensors."

Ultra Low Cost 2.4 GHz Wireless Transceiver with an FRDM Board

Posted December 14, 2014 by Chris

"For my embedded systems lecture I need a wireless connection to the robot we will develop during that course….Alex Vecchio pointed me to a $2.75 (!) wireless module featuring the Nordic Semiconductor nRF24L01+. Exactly what I needed, with an incredible low price :-). So I ordered a handful modules, and after a few hours, I had two FRDM-KL25Z talking to each other:"

Homeopathic Radio Engineering

Posted December 13, 2014 by Chris

"A transmitter location on the east coast of the USA was used. The tests were conducted on HF radio frequencies on and around 6925 kHz, using a state of the art solid state transmitter with a standard off the shelf MOSFET as the RF final amp. Each monitoring post was equipped with the highest quality HF receiving gear and highly sensitive monopole receiving antennas….The results of the experiment clearly speak for themselves, as transmitter power went down, the signal strength went up."

High Voltage Keyboard

Posted December 12, 2014 by Chris

"This ‘musical keyboard’ uses flyback transformers to create an audio modulated high voltage arc discharge. Each key controls a driver board. When activated, the key applies power to a high voltage transformer. The transformer makes an arc, which is modulated at a set frequency. This frequency produces audio."

Christmas Lantern Synchronized with music

Posted December 11, 2014 by Chris

"The project was a 5 ft tall lantern composed merely of junk wires, light bulbs and considerable amount of electronic components. The lantern was synchronized with monotone tunes. There were 5 different songs used and every song has different light sequences."

The Ghost In The Field

Posted December 10, 2014 by Chris

" The camera has been fixed in its position and the reader photographed. Using a tag connected to an LED we paint in the edges of the readable volume with a long exposure and animate them to show the form."

Panda With A Gun On An LED Pixel Array

Posted December 9, 2014 by Chris

"Although the panda effect is in 3D, and 3D is usually hard, several visual limitations simplify the problem greatly. The panda is only seen from the side, and is rotated about its exact center. This means that if I can figure out how to render a side view of a single layer of panda voxels, I’ve come up with a solution for the whole effect."

Wireless Persistence of Vision Device with Realtime Control

Posted December 7, 2014 by Chris

"In deciding on a project we looked for a challenge that would have a good mix of hardware and software problems. We ended up primarily concentrating on looking at unusual display technologies and decided that a persistence of vision(POV) display would be a good balance."

Wireless Temperature Sensor using RF Transmitter/Receiver

Posted December 6, 2014 by Chris

" I used a 434MHz transmitter and receiver from Sparkfun, and had great success with these cheap devices. I also used a simple LM34 Fahrenheit temperature sensor, two Arduinos, and a two-digit LED display to show the temperature at the receiver end."

HD44780 LCD To USB

Posted December 5, 2014 by Chris

"LCD2USB is a open source/open hardware project. The goal of LCD2USB is to connect HD44780 based text LCD displays to various PCs via USB. LCD2USB was meant to be cheap and to be made of easily available parts. It is therefore based on the Atmel AVR Mega8 CPU and does not require any difficult to obtain parts like separate USB controllers and the like."