ESP8266 + RC522 + MicroPython

Note: This is a modified version originated from: https://github.com/wendlers/micropython-mfrc522

1. Preparation

• Get an ESP8266 (Mine is a 4MB flash one, and sometimes there is not enough memory to allocate)

• Get a RC522 high frequency RFID reader

• Connect ESP8266 and RC522 according to :

  Signal	GPIO ESP8266
  sck	0
  mosi	2
  miso	4
  rst	5
  sda	14

• Install a Python IDE which is capable of calling interpreters from coms: https://thonny.org/

2. MicroPythonize ESP8266

• pip install esptool

• esptool --port COM4 erase_flash

• esptool --port COM4 --baud 460800 write_flash --flash_size=detect -fm dout 0 esp8266-20210902-v1.17.bin

  Note: COM4 is the com connected to ESP8266 in MY COMPUTER; esp8266-20210902-v1.17.bin is just the MicroPython image to be flashed; Modify these two parameters according to your own situation.

• Open up a Serial Port Assist software to test whether your ESP8266 can run python codes. If yes, proceed to the next step (Below is a positive instance)

  

3. Put Python Scripts into ESP8266

• Go to folder ./Python-Scripts, put rc522.py, test.py, utils.py to ESP8266 through Thonny
• Run test.py