Hi ! I am working on a DIY project for sim racing. The goal is to pull on an harness while braking. I am using a 350W DC motor, and this driver. I have an Arduino linked to the PC, able to generate a pwm signal proportionnal to the negative G’s.
The problem is that the driver is controlled by a potentiometer, not a pwm signal. I could use na RC circuit, but it doesn’t seem to work. So I disassembled the driver and start to look after the pwm signal. But the truth is : I don’t know how to find it…
How can I find it. I started to try with an LED, but I don’t now how to wire it.
More pictures of the board here : pwm driver | Flickr
PS : there is an Atmel Mega48PA on the board.