I am making a tracked robot and am running into a problem when running the 2 12V DC motors. I have my circuit wired to work with 2 smaller 6V motors and it works fine. For the 12V motors, I have a 12V battery that I use as an external power source for the motors. The L293 datasheet says it will support up to 36V, at less I read it wrong. However, when I run the sketch, the 12V motors don't function right, then stop don't move. I think it has something to do with the power source and or the h-bridge (L293) I'm using.
Any advice for using 2 12V DC motors would be appreciated.