I buy a new megapi pro board.
1.Open Audrino IDE
2.Open Firmware_for_MegaPiPro.ino file.
3.Compile and Upload this file.
4.Then the error came out:
‘Serial3’ was not declared in this scope
I need to remove all the code which contain ‘Serial3’ and ‘Serial2’, then I could compile and upload sucessed.
Why? Thank you.