Pololu Dual G2 High-Power Motor Driver 18v22 for Raspberry Pi (P

Description

" This add-on board makes it easy to control two high-power DC motors with a Raspberry Pi. Its twin discrete MOSFET H-bridges support a wide 6.5 V to 30 V operating range and are efficient enough to deliver a continuous 22 A without a heat sink. The drivers offer basic current limiting functionality, and they accept ultrasonic PWM frequencies for quieter operation. The default pin mappings make it easy to get started, but they can be customized for more specialized applications. This version ships as a partial kit ; all surface-mount components are installed, but the included through-hole connectors are not soldered in Overview These G2 dual high-power motor drivers are add-on boards for the Raspberry Pi, featuring pairs of discrete MOSFET H-bridges designed to drive two large brushed DC motors. They are designed to mount on and plug into compatible Raspberry Pi boards (Model B+ or newer), including the Pi 3 Model B and Model A+ . Four versions are available so you can pick the one with the appropriate operating voltage range and output current capabilities for your project: Dual G2 High- Power Motor Driver 18v22 for Raspberry Pi Dual G2 High- Power Motor Driver 18v18 for Raspberry Pi Dual G2 High- Power Motor Driver 24v18 for Raspberry Pi Dual G2 High- Power Motor Driver 24v14 for Raspberry Pi Absolute max input voltage: 30 V 36 V* Max nominal battery voltage: 18 V 28 V Max continuous current per channel: 22 A 18 A 18 A 14 A Default active current- limiting threshold: 60 A 50 A 40 A Available with connectors installed? No Yes No Yes * 40 V if regulator is disconnected The minimum operating voltage for all four versions is 6.5 V, while the maximum operating voltages are given in the above table. The board also includes an integrated 5 V, 2.5 A switching step-down regulator that can be used to power the Raspberry Pi it is plugged into, enabling operation from a single power supply. The driver’s default configuration uses six GPIO pins to control the motor drivers, making use of the Raspberry Pi’s hardware PWM outputs, and it uses two additional pins to read status outputs from the drivers. However, the pin mappings can be customized if the defaults are not convenient, and pins for current sensing and limiting are accessible on the board for more advanced applications. Note that this motor driver add-on is designed specifically for newer versions of the Raspberry Pi with 40-pin GPIO headers, including the Model B+ , Model A+ , Raspberry Pi 2 Model B , and Raspberry Pi 3 Model B . The board matches the Raspberry Pi HAT (Hardware Attached on Top) mechanical specification, although it does not conform to the full HAT specifications due to the lack of an ID EEPROM. (A footprint for adding your own EEPROM is available for applications where one would be useful; pull-ups on SDA, SCL, and WP are provided.) It is not practical to use this expansion board with the original Raspberry Pi Model A or Model B due to differences in their pinout and form factor. These dual motor drivers are also available as Arduino shields . For single-channel versions in a more compact form factor, consider our High-Power Motor Drivers . For smaller, lower power, and lower cost alternatives designed for a Raspberry Pi, consider our Dual MC33926 Motor Driver for Raspberry Pi and DRV8835 Dual Motor Driver for Raspberry Pi . Features common to all versions PWM operation up to 100 kHz Motor indicator LEDs show what the outputs are doing even when no motor is connected Integrated 5 V, 2.5 A switching step-down voltage regulator powers the Raspberry Pi base for single-supply operation Python library makes it easy to get started using this board as a motor driver expansion board GPIO pin mappings can be customized if the default mappings are not convenient Current sensing and limiting pins are exposed for advanced use Reverse-voltage protection Undervoltage shutdown Short circuit protection