Basically, when I write messages to serial, I have to write another message to see the results of my previous, and then the next message would repeat that message, then the one after that shows the last one I typed. It constantly lags behind by 1. void loop() { // put your main code here, to run…

Serial port is always 1 message behind.

UKHeliBob October 8, 2017, 3:07pm 3

What have you get the line ending set to in the Serial monitor ?

Why are you reading from Serial before you know that anything is available ?

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