GacHAUM

Hardware

• WeMos D1 mini
• PN532-based reader (ie. Adafruit PN532)
• Relay shield (e.g. Relay Shield V2 for WEMOS D1 mini ; 75mA measured)

Wiring

Powered by WeMos through its USB port

• 3V3 (WeMos) -> 3V3 (PN532)
• D8 (WeMos) -> SSEL (PN532)
• D7 (WeMos) -> MOSI (PN532)
• D6 (WeMos) -> MISO (PN532)
• D5 (WeMos) -> SCK (PN532)
• GND (WeMos) -> GND (PN532)
• GND (WeMos) -> GND (Relay)
• +5V (WeMos) -> +5V (Relay)
• D1 (WeMos) -> D1 (Relay)

Arduino required libraries

• PubSubClient

This library can be installed using Arduino IDE.

• Seeed-Studio PN532 (forked)

https://github.com/haum/PN532

git submodule init
git submodule update
export ARDUINO_LIBS="$HOME/Arduino/libraries"
ln -s $PWD/PN532/PN532 $ARDUINO_LIBS/
ln -s $PWD/PN532/PN532_SPI $ARDUINO_LIBS/