Can I use regular pins (Example: D2, A3, etc...) as serial (RX, TX)?

Question

Python/Arduino Beginner here...

I have a DFplayer I am trying to hook to my Arduino and I want to hook it up through the regular pins instead of the RX and TX pins, but I've not been able to find detailed information on if I can do that and how to set it up... Is this possible to do?

• Juraj: docs.arduino.cc/learn/built-in-libraries/software-serial

Answer 1

Yes, it is possible. You need to use the SoftwareSerial.h library, which comes with the AVR libraries package preinstalled in Arduino IDE. You just need to find some library which supports declaring the DFPlayer object with custom serial port as a parameter in constructor, or use it without any additional library and send commands to it by yourself.
Here is a tutorial for the SoftwareSerial library: https://docs.arduino.cc/tutorials/communication/SoftwareSerialExample