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So, how do you make a controller?
The microcontroller (ATMega8 in my case) can generate pulse width modulation (PWM) signals. So, it listens to the throttle, and then sends a PWM signal to the mosfets' gate driver. The gate driver amplifies it a bit. The gate driver's job is to turn the mosfets on and off according to the PWM signal. Then, the mosfets massively amplify the PWM signal. That signal is sent to the motor, and you drive down the road. That's it!
The microcontroller can also monitor things like battery pack voltage, temperature, or whatever you want!
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