https://www.espinr.es/post/171893735073/activioty-timekeeping-report

http://www.sportsystem.ru/about.html

https://www.youtube.com/watch?v=2f28TbmsS00

https://hackaday.io/project/19382-otimcon

https://randomnerdtutorials.com/arduino-time-attendance-system-with-rfid/

https://sites.google.com/site/ibuttonsport/kompanenty/chip

https://github.com/stajp/otimcon

_______________________________-

https://stackoverflow.com/questions/49531522/two-rfid-rc522-communicate-with-each-other-using-arduino-unos

https://circuitdigest.com/microcontroller-projects/arduino-rfid-door-lock-code

https://openhomeautomation.net/arduino-battery/

https://arduino.stackexchange.com/questions/10059/how-to-send-the-mfrc522-rfid-module-into-sleep-mode

https://forum.arduino.cc/index.php?topic=340222.0

RFID-Tag-Reading-and-Writing-TfCD-Project/

baterie

GM

https://www.gme.cz/modul-rtc-ds323-i2c-a-32kb-flash

https://www.gme.cz/spinac-dip-06-piano-blue

• deska
• čtečka RFID
• ledka
• bzučák
• baterka
• konektor pro baterku
• krabička
• očíslování – DIP switch
• čas – gme