Contribute to jumbokh/Arduino-1 development by creating an account on GitHub.

Hello, I am trying to connect DFPlayer to Arduino Nano 33 IoT. I believe I cannot use SoftwareSerial there, but can use HardwareSerial Serial1, connection TX-RX and RX-TX.

Arduino Uno R3 DFPlayer Mini 3 relays I also connected the Ignition Wire to this system — meaning when I turn the key ON or OFF, the Timer Relay gets a pulse too. So no matter if I lock, unlock, or ...