Arduino/ESP32 as slave device for MDB vending machine
Budget: $10 – $30 USD
It's need to create Arduino/ESP32 Firmware to connect it to coffee machine as slave device like Cashless Device.
functional:
1. Get amount from coffee machine
2. Set "payment" result
3. Wake up coffee machine
4. Get error information like coffee or water was ended
functional:
1. Get amount from coffee machine
2. Set "payment" result
3. Wake up coffee machine
4. Get error information like coffee or water was ended