Turn-key PCB assembly services in prototype quantities or low-volume to mid-volume production runs

Embedded 1 to 8 intercom system

This project was created by M.Shakeel Malik. System allows to make regular calls and to one of 8 internal phones.   System is controlled by Atmel AT89S51 microcontroller. System also have its own tone generator which allowing to send dial and busy tones. Calls can be hold with voice message or melody signal transmission. Circuit and source asm code is available. Continue reading

Experience AVR programming with Piconomic course

Piconomic Design is a small firm which had created nice course for learning AVR 8 bit microcontrollers. They have prepared a development board which you can by for 44.99$ or you can build one for non commercial purposes, because they made PCB and other files available on their website(one successful board replication is here).   Board have most of all necessary features ar pins that allows to cover almost all Atmega128 functionality. Also Piconomic Design have prepared wonderful set of tutorials and even code AVRLIB for fast application development. All programming is done by using OpenSource WinAVR tools. I think this is nice example how commercial product can be delivered to end user – you want to try, grab it for free. Liked it? then be honest to buy. Continue reading

High power RGB LED controller

This is nice project from petesworld. Device is used to drive high power RGB led (250mA) by using PWM control. Controlling separate colors (Red, Green, Blue) there is possible to generate up to 16 million colours. Device is used mainly for dynamic and static color effects.   LED was placed in to diffused dome lamp. This way diffused light looks nice. Circuit diagram isn’t very complicated as there are ZXLD1350 current drive circuits used. Source code is available for non commercial use. Be sure to check for other project revisions. Continue reading

Handheld pocket health monitor

This health monitor may become a dream of many people while it is capable to monitor most of human bio-signals including ECG, EMG, GSR, Pulse Oximetry, Temperature, Breathing sounds and even movement with 3 axis accelerometer.   This health monitor is based on Texas Instruments MSP430 MCU which is characterizes as low power microcontroller. Data is sent via blue-tooth to Pocket PC where data is analysed and displayed as graphs. Also data is recorded to dataflash for backup. Continue reading

DIY AVR tetris game

This is simple tetris game clone developed by Johannes Treu.   The game consists of separate boards: one for LED display where 240 LEDs are aligned one for Atmega8 microcontroller board with other circuitry and pushbutton board. The idea looks nice-feels like I want to play the game couple times. If you want too, then go ahead. All files are available at avrfreaks site or you can download circuit and source here. Continue reading

AVR dot-matrix LED game

This simple game console if we can say so is built under AVR Atmega168. Game display is made of 16×16 dot matrix LED.   Game platform has many variations and upgrades line interfacing to TV, AT keyboard, LCD. Author also provides nice collection of ready to play games for free including “Space Fight” , “Super car” and others. Continue reading