Karate

Mikado Giessen:
(My Karate club. The website is currently maintained by me)
http://www.mikado-giessen.de/



Atmel AVR Microcontrollers

Official AVR Site:
http://www.atmel.com/products/AVR/

Nice tutorial for the first hardware steps with AVR (german):
http://www.mikrocontroller.net/articles/AVR-Tutorial

Introduction to C programming for AVR (german):
http://www.mikrocontroller.net/articles/AVR-GCC-Tutorial

AVR resources:
http://www.avrfreaks.net/



Ham Radio

F19 Ham Radio Club Wetzlar:
http://www.f19.de/

F07 Ham Radio Club Giessen:
http://www.darc.de/f07/



Castle Laurenburg

Official site:
(Website currently maintained by me)
http://www.laurenburg.de/laurenburg/burg/index.html