µ[micro]electronics info - ATMega48

4bit MIDI synthesizer

admin — Mon, 05 Jan 2009 18:31:03 +0000

Simple AVR-based MIDI monophonic synthesizer.

USBasp - in-circuit programmer for Atmel AVR

admin — Mon, 27 Oct 2008 22:35:34 +0000

This AVR programmer consists of an ATMega48 or an ATMega8 and a couple of passive components. The programmer uses a firmware-only USB driver, no special USB controller is needed.

Stereo PWM audio

admin — Fri, 10 Oct 2008 15:48:32 +0000

Using a pwm channel of a simple microcontroller, a capacitor and a resistor to reproducting sounds.

Power usage logger

admin — Tue, 23 Sep 2008 07:43:54 +0000

This device monitors household power usage and logs it to an SD card.

Flickr images on a Nokia 6110 Color LCD

admin — Sat, 14 Jun 2008 13:01:27 +0000

Most used are these green character displays with two or more rows to display menus, status or debug messages. With mass production of mobile phones, color LCDs get that cheap, that they can be used as replacement. To test the display, I hacked a kind of small digital picture frame, that fetches pictures from Flickr.