Nichts verpasst...

Firmware engineer for microcontrollers; formerly Support engineer for Unix systems.

Member FreeBSD development team (member of core-team from 1995 through October 2000).

My personal address:
Jörg Wunsch
Schrammsteinstraße 8
D-01309 Dresden

My private phone number (eMail preferred):

eMail address:

My work phone number (emergency cases or work-related topics only):

Married since 2000, we are happy with our four kids.


I'm also a licensed radio amateur (High Frequency AMateur), and increased my activities on HF again in recent years. My call signs are Y4 3TL (G.D.R., valid up until Dec 2, 1992) and now DL8 DTL. I'm not QRV (and do not plan to be) on packet radio, i prefer CW on the HF bands, as well as experiments (like perhaps LF tests on 135 kHz some day) and constructing own radio equipment.

I'm a member of the DARC, club S09.

One of my pet projects is working with AVR microcontrollers made by Atmel. I'm involved with maintaing part of the opensource toolchain for these controllers, commonly known as just avr-gcc. See the avr-libc project page for documentation about all this.



There's a slightly more enhanced version of the little avr-libc demo project that can be found here.

I wrote Mfile, a small Makefile generator for use with the AVR-GCC toolchain. More about Mfile...

I wrote a small library implementing one-shot timers for AVR-GCC.

Amateur radio related

There used to be so-called Kreiskenner (KK's) in the HAM radio era of the GDR, a list of the scanned tables of those 225 identifiers can be found here.

I once had to rewrite a PIC 12F508 firmware that controls an MB1504 PLL circuit, used in the PLL Synthesizer kit from Harry Helpert, DJ9HH. The description (in German language) can be found here.

Electronics stuff

Here's a small project for a very simple yet effective LED flash light. Sorry, currently only available in German language.

My son once asked me to build him a Nixie clock after seeing such a device at a friend. If you're interested, have a look at the result.

I've created my own little board for UHF communication in the 2.4 GHz ISM band, using Atmel's AT86RF230 transceiver ICs. The board is named tiny230.

Some scanned images:


I've been asked to port over the BASIC program of an old magazine article into the 21st century. The article is about the use of a numerical integration method called ROMBERG, the application is to calculate transitional curves for railway tracks. Sorry, German language only. Here is the resulting C program source code.

This program has once been part of a research paper my wife did during her University studies (just in case you wonder why I ever did this;). Meanwhile, she graduaded as a Diplom-Ingenieur, and runs her own business named gleisBezug.

Jörg Wunsch $Date: 2018-07-15 18:31:03 +0200 (Sun, 15 Jul 2018) $