You have to disconnect the rx pin on the Arduino from the MAX485 because the signals from the 485 interfere with the signals from the computer that use the same pin.
Some of the newer DMX libraries don't require changing the HardwareSerial.cpp file.
You have to disconnect the rx pin on the Arduino from the MAX485 because the signals from the 485 interfere with the signals from the computer that use the same pin.
Some of the newer DMX libraries don't require changing the HardwareSerial.cpp file.