I make remote control lawnmwer on base Sabertooth Dual 2x32A/6-30V motor driver and I unhappily had bad experience.
All it was ok, when I connected battery (24V lithium ion) with motor driver and two dc motor (wiper motors for truck) connected at metal frame - without sprockets, chains and wheels.
After that, I connected sprockets, chains and wheels at metal frame and then was smoking from motor driver and both DC motors - maybe short circuit. Sabertooth 2x32A did not survive. frowning_face
**Maybe it shold have ground: minus wire (-) of battery connected at metal frame and also minus the power supply terminal (-) of motor driver connected at metal frame? **
Setting deep switch Usb Sabertooth 2x32 was for RC mode: 1 off, 2 on, 3 off, 4 off, 05 on, 6 on.
RC transmitter and receiver - Realy HT -10 (Tank mode - 2 and 3 channel).
If someone have a suggestion or experience for safety and correct connection motor driver with dc motors, sprockets, chain and wheels I would be grateful.
In attach files is pictures of my project.