enterCode

This is a small toy for my children:

• they want a small keyboard to "simulate" a code to enter their room
• a green LED will light on when the code is correct (red if not)
• they will also be able to use a RFID key

It is powered by three AA battery, and should not consume too much (sleep mode)

Principle

Bill of Material

• an AVR micro-controller (ATtiny 2313)
• a small 4x4 matrix keyboard (
• 3 AA 1.5v battery (and their holder)
• two LEDs (green and red)
• a plastic box
• a RC522 RFID reader and some RFID key
• four 7-segment displays, with TM1637 driver

Some links

• doc for the RC522 board

To Do (not yet done, but will be done... one day in the future)

• go to sleep mode after 20 seconds (when not used)
• RFID part