I want to link my Arduino to Processing to make speed modified train sounds on my model railway. I have no problem connecting the Arduino up if the loco is going forward as I can easily adjust the input voltage to suit. The problem I have is when I put the loco in reverse. How do I read this negativ…

reading voltage between +13V and -13V

garethwilkins April 24, 2018, 12:45pm 6

I am going to control them on PC using a Processing sketch linked to the arduino

Topic		Replies	Views
New to Arduino, need some guidance General Guidance	32	9995	May 5, 2021
Read negative or positive voltage from the same pin General Electronics	3	1420	May 6, 2021
Reading output from device. -5v to +5v range Interfacing	5	1892	May 6, 2021
Voltmeter with Arduino General Electronics	3	1827	May 6, 2021
Positive and Negative Voltages (Can I do this circuit?) General Guidance	10	6108	May 5, 2021