I'm trying to send data via serial from my Arduino nano to my ESP. Its an integer from 1 to 4 digits so something like 0, 13, 1234, 123, ...
Every thing works fine but when the data comes too fast it stopps the output and then it print all the data on the screen.
I use this method to recieve data.
void loop() { // run over and over
if (Serial.available()) {
incomingByte = Serial.readString();
Serial.println(incomingByte);
}
}