RFID lock project is based on PIC16F84 microcontroller. Device can read 125kHz read only RFID tag cards.
Device can work in two modes: toggle lock and pulse. In toggle mode lock changes its state when card is moved near reader while pulse mode lock changes its state for some period and comes back to its previous state. Microcontroller EEPROM memory stores 12 byte long IDs of RFID tags. It is possible to store multiple card IDs, where number is limited only to EEPROM size. Whole project description is Bosnian language – well circuit language is same for all 🙂