µ[micro]electronics info

A weblog focused on interesting circuits, ideas, schematics and other information about microelectronics and microcontrollers.




Because I have not tested all electronic circuits mentioned on this pages, I cannot attest to their accuracy; therefore, I do not provide a warranty of any kind and cannot be held responsible in any manner.

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1-key USB keyboard

The idea for a 1-key keyboard comes from the need as an interaction designer to make “cheap, quick and dirty prototypes.” When creating a quick screen-based demo in e.g. Adobe Flash, a common way of quickly prototyping physical actions is to assign actions to certain key presses on a keyboard.

GLCD video emulator

A GLCD emulator - takes commands for common GLCD and places output to the TV.

AVR and 1-Wire interface

Dallas Semiconductor (Maxim) produces a family of devices that are controlled through a proprietary 1-wire interface. On a 1-wire network, a single "master" device communicates with one or more 1-wire "slave" devices over a single data line, which can also be used to provide power to the slave devices. How to connect such devices to Arduino?

Stealth USB CapsLocker

Just a joke for April Fool's Day, but I believe it can be used in some other way.

6502 bits

Some 6502 information, tips and tricks

FemtoOS for AVRs

The Femto OS is a very concise portable preemptive operating system (RTOS) for embedded devices with minimal ram and flash, say 2KB .. 16KB flash and 128 .. 1024 bytes ram.

ATMega SID emulator

This program tries to emulate the sound chip SID of the famous historical C64 Commodore computer (SID = Sound Interface Device). The SID emulator includes all registers of the original SID, only minor functions are not implemented yet.


An open source 8-bit game console (an Uzebox successor)

True Random Number Generator

True random number generator, generated by AVR-based hardware (not a computed pseudorandom numbers).

A lot of reading

Old magazines, old OS, old games source code, all's old today.

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