Most microcontrollers aren't able to directly control motors due to their low current output capacity, so you'll need a chip to handle all that current (and voltage).
Brushed DC Motor Controllers
Motor controllers consist of drivers, combined with logic circuits designed to handle higher-level interfaces such as serial, PWM, analog, and other common inputs.
Pololu Jrk 21v3 USB Motor Controller with FeedbackThe jrk 21v3 motor controller is a highly configurable brushed DC motor controller that supports four interface modes: USB, logic-level serial, analog voltage, and hobby radio control (RC). The controller can be used with feedback for closed-loop speed or position control, or it can be used without feedback as an open-loop speed control. The continuous output current is approximately 3 A in the recommended operating range of 8–28 V, with derated performance down to 5 V and transient protection to 40 V. The board ships with connectors included but not soldered in, allowing for custom installations.- Pololu Simple Motor Controller 18v7 (Fully Assembled)The Pololu Simple Motor Controller 18v7 makes basic control of brushed DC motors easy, with Pololu's free Simple Motor Control Center software enabling quick configuration over USB. The controller supports four interface modes: USB, TTL serial, analog voltage, and hobby radio control (RC). This version operates from 5.5 to 30 V and is efficient enough to deliver a continuous 7 A (>30 A peak) without a heat sink. It ships with the power capacitor and connectors installed as shown.
- Pololu High-Power Simple Motor Controller G2 24v19SKU: POLOLU-1367 Brand: PololuThis powerful motor controller makes basic control of a brushed DC motor easy, with quick configuration over USB using our free software. It supports five control interfaces: USB, TTL serial, I²C, analog voltage (potentiometer), and hobby radio control (RC)
Brushed DC Motor Drivers
Motor drivers are commonly paired with a microcontroller to provide locomotion for your next project. Be sure to match the voltage and current requirements for your motor.
- Makerverse Motor Driver 2 ChannelDrive 2x Brushed DC motors or a bipolar stepper with optional current limiting
- Adafruit Motor/Stepper/Servo Shield for Arduino v2 Kit - v2.3The original Adafruit Motorshield kit is one of Adafruit's most beloved kits, which is why they decided to make something even better. This is an upgrade to the original shield...
- DRV8833 Dual Motor Driver CarrierThis tiny breakout board for TI’s DRV8833 dual motor driver can deliver 1.2 A per channel continuously (2 A peak) to a pair of DC motors. With an operating voltage range from 2.7 V to 10.8 V and built-in protection against reverse-voltage, under-voltage, over-current, and over-temperature, this driver is a great solution for powering small, low-voltage motors.
Stepper Motor Drivers
Stepper motors require a more specific method of control than a standard brushed motor, so you'll need a proper stepper driver to control them.
- Makerverse Motor Driver 2 ChannelDrive 2x Brushed DC motors or a bipolar stepper with optional current limiting
- A4988 Stepper Motor Driver Carrier, Black EditionSKU: POLOLU-2128 Brand: PololuOur Black Edition A4988 stepper motor driver carrier is a higher-performance drop-in replacement for the original A4988 stepper motor driver carrier. It features a four-layer PCB for better thermal performance, allowing the A4988 microstepping bipolar stepper motor driver to deliver approximately 20% more current than Pololu's two-layer (green) version. Like Pololu's original carrier, the Black Edition offers adjustable current limiting, over-current and over-temperature protection, and five different microstep resolutions. It operates from 8 V to 35 V and can deliver up to 2 A per coil with sufficient additional cooling. This board ships with 0.1″ male header pins included but not soldered in.
- A4988 Stepper Motor Driver CarrierSKU: POLOLU-1182 Brand: PololuThis breakout board for Allegro’s A4988 microstepping bipolar stepper motor driver features adjustable current limiting, over-current and over-temperature protection, and five different microstep resolutions (down to 1/16-step). It operates from 8 V to 35 V and can deliver up to approximately 1 A per phase without a heat sink or forced air flow (it is rated for 2 A per coil with sufficient additional cooling). This board ships with 0.1″ male header pins included but not soldered in.
- DRV8825 Stepper Motor Driver Carrier, High CurrentSKU: POLOLU-2133 Brand: PololuThis breakout board for TI’s DRV8825 microstepping bipolar stepper motor driver features adjustable current limiting, over-current and over-temperature protection, and six microstep resolutions (down to 1/32-step). It operates from 8.2 V to 45 V and can deliver up to approximately 1.5 A per phase without a heat sink or forced air flow (rated for up to 2.2 A per coil with sufficient additional cooling). The driver has a pinout and interface that are nearly identical to those of Pololu's A4988 stepper motor driver carriers, so it can be used as a higher-performance drop-in replacement for those boards in many applications. This board ships with 0.1″ male header pins included but not soldered in.
Servo Controllers
Servos can be controlled using PWM outputs, and if you've got lots of servos to run or your board doesn't have any PWM outputs, then a servo driver is just what you need.
- PiicoDev Servo Driver (4 Channel)
Motion means exciting. Control up to 4 servos independently!
- Micro Maestro 6-Channel USB Servo Controller (Assembled)SKU: POLOLU-1350 Brand: PololuThe six-channel Micro Maestro raises the performance bar for serial servo controllers with features such as a native USB interface and internal scripting control. Whether you want high-performance servo control (0.25 μs resolution with built-in speed and acceleration control) or a general I/O controller (e.g. to interface with a sensor or ESC via your USB port), this tiny, versatile device will deliver. The fully assembled version ships with header pins installed.
- Mini Maestro 12-Channel USB Servo Controller (Assembled)SKU: POLOLU-1352 Brand: PololuThe 12-channel Mini Maestro 12 raises the performance bar for serial servo controllers with features such as a native USB interface and internal scripting control. Whether you want the best servo control available (0.25μs resolution with built-in speed and acceleration control and pulse rates up to 333 Hz) or a general I/O controller (e.g. to interface with a sensor or ESC via your USB port), this compact, versatile device will deliver. This fully-assembled version ships with header pins installed.
- Adafruit 16-Channel PWM / Servo HAT for Raspberry Pi - Mini KitThe Raspberry Pi is a wonderful little computer, but one thing it isn't very good at is controlling DC Servo Motors - these motors need very specific and repetitive...
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