To keep this brief, I was given the job of the electronics portion for a vehicle for an engineering project. We are giving a kit (12V battery so this is all 12V) to be able to build the regular model and then have $20 allotted for modifications, hence why I did a budget controller with a 555 timer.
So basically the left and right motors are hooked to DPDT paddle switches to give the driver tank steering, we needed fine control of these motors so that's where the speed control comes into play.
The 555 drives an N-channel BJT . I have a wire from ground to the emitter side and from there I have the wire from the collector going to both switches.
Here is my problem, with one motor this all works fine and full power and the full range of power is achieved, with both motors on the power to each drops drastically.
Should I a) run a seperate transistor for each motor and have both bases tied together? or B) Put another