Dual VNH5019 Motor Driver Shield for Arduino Pololu

Dual VNH5019 Motor Driver Shield for Arduino Pololu - This motor driver shield is equipped with the robust VNH5019 from ST. It can operate from 5.5 to 24 V and supply continuous 12 A (30 A peak) per channel. It has pull-up and protection resistors and FETs for reverse battery protection.

Frequently asked questions about Dual VNH5019 Motor Driver Shield for ArduinoPololu

Q1: What kind of stepper motors work with the shield?

The 1.2A continuous current limit on the TB6612B driver chip makes it a straightforward H-bridge driver. Since there is no active current limiting, you should pick a stepper motor that won't attempt to draw more than that.

Use a motor with a phase resistance of 10 ohms or greater, is a straightforward rule of thumb. With supply voltages up to 12 volts, this can be used without risk.

The shield works well with the NEMA 17 motor that we have in the shop because it has a phase resistance of roughly 35 ohms.

Q2: How can I use this NEMA-17 motor?

Just a description of the motor frame size, NEMA-17. The motor body is described as being 1.7" square. We learn nothing about the electrical properties from it. To evaluate compatibility, you must know at least the motor's phase resistance.

Q3: What serves as a green Power LED?

The LED shows that the power source for the DC/Stepper motor is operational. The DC/Stepper motors won't operate if it's not well-lit. The servo ports do not use the DC motor supply because they are powered by 5V.

Q4: What motor shield pins are utilized or not?

The logic on-board needs to be powered by GND and either 3.3v or 5v (the default). Selecting (5v or 3v operation is done via a jumper)

DC and stepper motors are controlled by the shield using the SDA and SCL i2c pins. These are also known as A4 and A5 on the Arduino UNO. These are also referred as as Digital 20 and 21 on the Mega. These are also referred to as digital 2 and 3 on the Leonardo. Use only an i2c sensor/driver with this shield when using those pins on those Arduino boards.

Since the shield communicates using I2C, any other I2C sensor or driver can be connected to the SDA/SCL pins as long as they do not use address 0x60 (the shield's default address) or 0x70 (this chip's 'all call' address for group-control).

The servo connections are located on pins #9 and #10 if you want to use them. Those pins are only inactive if the connector is not in use.

QUICK SPECS:

• Size: 2.56″ × 2.02″ × 0.38″1
• Weight: 18 g1
• Motor driver: VNH5019
• Motor channels: 2
• Minimum operating voltage: 5.5 V
• Maximum operating voltage: 24 V2
• Continuous output current per channel: 12 A
• Peak output current per channel: 30 A
• Current sense: 0.14 V/A
• Maximum PWM frequency: 20 kHz
• Reverse voltage protection?: Y