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Ive been told if I want to test reliability of a serial connection, I would send data to arduino from processing, an have arduino send data back. By reliability I mean, lets say I have some sliders that when dragged from left to right, send info to a device I have connected to arduino UNO. Before the info gets sent to the device I want to verify that this info is free of errors and it will do what I intend for it to do before it gets sent out, via maybe a coding condition. So I was wondering how I would do this coding wise?