You are wrong, then, about what you need to send. The receiver is NOT expecting the data in hex form. It DISPLAYS the data it gets in HEX form.
Just use Serial.write() to send the bytes.
You are wrong, then, about what you need to send. The receiver is NOT expecting the data in hex form. It DISPLAYS the data it gets in HEX form.
Just use Serial.write() to send the bytes.