8
Controlling Motors with Mosfets
AVRs cannot directly control motors. In order to enable this, we need to use external components: metal-oxide-semiconductor field-effect transistors (MOSFETs), transistors that can switch or amplify voltages in circuits.
In this chapter, you’ll learn how to:
- • Use PWM with MOSFETs to control DC motors.
- • Use MOSFETs to control larger currents.
- • Use motor driver ICs to interface larger motors with your AVR microcontrollers.
Along the way, you’ll build a temperature-controlled fan and a two-wheel-drive robot vehicle, building on prior knowledge to complete more interesting and complex projects. By the end ...
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