Support » Pololu Dual VNH5019 Motor Driver Shield User’s Guide » 1. Overview »
Pololu dual VNH5019 motor driver shield, assembled and connected to an Arduino Uno R3.
Pololu dual VNH5019 motor driver shield for Arduino, bottom view with board dimensions.
- Wide operating voltage range: 5.5 – 24 V1
- High output current: up to 12 A continuous (30 maximum) per motor
- Motor outputs can be combined to deliver up to 24 A continuous (60 A maximum) to a single motor (see Section 7)
- Inputs compatible with both 5V and 3.3V systems (logic high threshold is 2.1 V)
- PWM operation up to 20 kHz, which is ultrasonic and allows for quieter motor operation
- Current sense voltage output proportional to motor current (approx. 140 mV/A)
- Motor indicator LEDs show what the outputs are doing even when no motor is connected
- Can be used with an Arduino or Arduino clone (through shield headers) or other microcontroller boards (through 0.1″ header along the left side)
- When used as a shield, the motor power supply can optionally be used to power the Arduino base as well
- Arduino pin mappings can be customized if the default mappings are not convenient
- Arduino library makes it easy to get started using this board as a motor driver shield
- Reverse-voltage protection to -16 V
- Robust drivers:
- Can survive input voltages up to 41 V
- Undervoltage and overvoltage shutdown
- High-side and low-side thermal shutdown
- Short-to-ground and short-to-Vcc protection
1 While the overvoltage protection typically activates at 27 V, it can trigger at voltages as low as 24 V, so we do not recommend using this motor driver with 24 V batteries, which significantly exceed 24 V when fully charged. If the shield is configured to power an Arduino or Arduino clone, the supply voltage must conform to that Arduino’s input voltage requirements.