[Arduino source code for KC868-A2]-05 RS485

[ktmustafa]

if our code work well, you can modify code based on our code.

I used the KC868 A2 as a master. With your code, I send "ON" or "OFF" to the Arduino Uno which connects to the KC868 A2 by using TTL to RS485 module.  Arduino Uno has to receive these strings and turn the built-in LED On or Off.. However, the Uno received nothing...