So I have two questions: Why do I have to remove RX and TX digital pins before uploading a sketch I made a robot car. It can work both on bluetooth manually and autonomous "mode" where it works as an obstacle avoider. I want to have the ability to switch between the two modes using something my a …

RX and TX and scripting question

xl97 April 3, 2018, 5:22pm 3

"Why do I have to remove RX and TX digital pins before uploading a sketch"

Removing from where/what?