When I was building my first Ardurover, due to my budget constraint I chose the l298n motor driver over some other expensive drivers. Guess what I faced the same issue that all faced, NO PWM OUT from the driver. So what I did was I added an extra circuitry to the IN1-IN2 and IN3-IN4 pins (1 for each pair) and keep the enable pins default connected with a jumper clip. What’s the interesting circuit that actual made that driver work, don’t laugh guys I just used a servo motor circuit. I dismantled the servo motors completely leaving just the circuit with it’s cables(signal, power and ground on one side which will be from the Pixhawk to receive signal and control of the motors and on the other side…actual power, ground connection to the source to power up the motors). In the servo motor circuit, the place where the original motor was present now replace it with your dc motor and you are set to run this rover. Even with this circuit I had another problem and that was with respect to arming of the rover, it wasn’t arming even after doing it on the rover hardware. I had to Force arm in the mission planner every time I turn on the rover. I guess people with experience would not have this problem and figure out the solution easily but still others can see if they face the same problem as well.
Happy to share this information with my fellow techies !!!
yes you can use a servo board connected to a L298N to drive a larger motor. I use it for custom servos. But you don’t need to do that to operate drive motors with ardurover assuming your not using an APM, just set the motor output to brushed bipolar and it will drive them directly.
