I guess there's no interest in the longer PWM version...
I will describe the 8 pins to match the code here:Uno D2,3,4,5 go to the L298 motor IC like before9,10,11,13 go thru 1k RES to 2,3,4,5There are 4x 1uf CAPs between GND and 2,3,4,5It's a really simple circuit, times 4.I realize 13 is not PWM, that's a bug, I should use 6 instead, but I have not fixed the original code yet.This circuit allows the PWM pins to create a smooth voltage with the appropriate time constant.To use PWM in the code you have to change pinMode of 2-5 to INPUT.When you change it back to OUTPUT, the maximum speed is not reduced.
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