DIY RFID system for access control
The idea is to build a simple RFID system to control the main door lock and the laser cutter for EB members/staff.
Server side exinting code for authentication (in php):
Server side proposal:
After many issues dealing with MFRC522 we moved to PN532. This one worked with an Arduino Nano without the Ethernet Shield. Once we connect the Ethernet shield it won't work via SPI. And via i2c it becomes very unstable. So we tried with a Raspberry Pi models 1 and 2. Didn't work either. Tried SPI, i2c and UART.
Finally we got the PN532 working with a Raspberry Pi 3 via i2c. So far it's been consistent. Here is a short documentation to get it working and integrated with Python3: