Electronics

From time to time I make my own electronic devices - sometimes just for fun, the other time for some friend (or my father) These electronic devices are made from discrete semiconductors, IC's and / or micro-controllers (x51, AVR, ARM). I did some stuff with CPLDs, but I found out that they are harder to debug as micro-controller based devices (you need special equipment which I don't have), so I decided to not use CPLD in my devices anymore...

Here are few examples of what electronics I did (designed, manufactured, programmed the firmware and sometimes sold):

GSM alarm

A simple GSM alarm for watching small objects. Uses a Siemens C35 cell phone to call 3 numbers in case of alarm. Based on Atmel ATmega16.

AirSoft bomb

A fake bomb for counter-strike like games (terrorists against special commandos) with AirSoft guns. One can set activation and deactivation code, count-down time to explosion and turn on / off protection against movement (if the bomb is lifted up, it will blow up). When the time reaches zero, the siren and the rotating lights are turned on and the smoke-shell is blown.

Based on Atmel x51.

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AirSoft respawn clock

Just a simple count-down clock with a small beeper with adjustable or random time. Based on Atmel x51.

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AirSoft dominators (project is still in development)

The small dominators are all over the battle-field and they signalize which from the two teams has the post captured. They communicate with big dominator (radio-communication on 433 MHz) which counts the points for both teams for each post with dominator every few seconds.

IDE Devil

IDE interface for ATARI ST based on Atmel ATmega64. Tthis is a stopped project, because IDE (PATA) interface is getting obsolete.

SatanDisk

SD/MMC card IDE interface for ATARI ST based on Atmel ATmega16 and XILINX XC9536XL.

Other pieces of electronics I did are not worth for publication here or I don't remember them ;-)