The microcontroller






Schematic of safety-lock circuit







Circuit description


     1. Register a telecard to the system:

     2. Unregister an registered telecard from the system:


    3. Erase entire internal eeprom of ATtiny26:






The internal eeprom of ATtiny26 with 8 different registered telecards (safety_lock.eep file)




You can not find ATtiny26 in the markets ?


The AT90s2313 version of safety-lock  





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 (c) 28.12.2003 by Serasidis Vasilis

updated at 29.01.2004