Arduino Firmware RFID RC522 CAN bus MCP 2515

Arduino CAN BUS RFID Project

The IDEA

 We want to create a new firmware for a fitness club
 The gateway works with a CAN bus
 RFID reader is integrated


Inputs from bus to the lock

 Open lock
 Close lock
 LED green on
 LED red on
 Buzzer on OPTIONAL if we have enouth IO

Output from the lock to the bus

 RFID UID number
 Door open/closed
 Door was not closed after 1 second
 Error

Details on the new PCB / Prototype with Arduino UNO

 Arduino UNO
 MCP 2515 CAN BUS
 RFID RC522 Reader


Flow

Fitness club – locker:

 The user enters and GYM locker area and places a RFID card on a lock with a green light
 As soon as there is an RFID card on the reader, the UID number gets sent via bus
 The server sends the command “Close lock”
 The motor runs until the lock is closed (motor position changed)
 The firmware saves the UID number in the whitelist
 The LED switches into red
 We check the door closed status after 0,5 second just to be sure
 If the door is still open,
o alarm on the buzzer
o delete the white list
o green LED on
o red LED off
 Output to the bus: DOOR_ FAILURE


After the workout:

 The user places the RFID card again
 If the UID is equal with the ID number in the whitelist then
o Erase the whitelist
o Run the motor until the motor switch changes (open the lock)
o Send “LOCKER_OPENED”