I am totally confused about Serial.available command :frowning: I'd like to stop the main program in order to receive the next command. Anyhow the Arduino skips my Command and simply goes on and on. I have written a little test program to show my problem: It should wait for an input, write "Send …

interrupt loop while receiving data

Robin2 September 8, 2016, 7:55am 7

Thank you for your kind words.

...R