Slot Car Controller - Built My Own LM393/LM339 PWM

Setting up the track for grands (and me). Broken controller. Decided I would fix it...follow me down the rabbit hole
References
crutschow 2017-01-29 "Simple PWM Circuit For Lamp Dimming, etc., Improves On 555 PWM Circuits"
www.electro-te...
February 2019 "Change of potentiometer linearity" www.qsl.net/om...
Afrotechmods Dec 30, 2010 "Comparator tutorial & clapper circuit" • Comparator tutorial & ...
GreatScott! May 3, 2015 "Build your own Variable Lab Bench Power Supply" • Build your own Variabl...
Vocademy - Electronics Technology / @vocademy-electronics-...
EEVblog / @eevblog
www.allaboutci...

[@KCRambles]

Thanks for such an informative and thorough walk through of the thought and design process for using PWM as a slotcar controller. Great work and I'll be borrowing heavily for an Arduino based controller that I've been futzing about with for a long while now. Keep On Keepin' On sir! :)

[@wartnose8232]

Fun. Spent as much time refreshing my memory on gopro and kdenlive as I did building the controller. Went old school with this one so I didn't have to write any code. I'll add frequency control to my next build. Been reading about back EMF and current ripple and those seem to be frequency related (but I don't really know what I just said).