New revision of the Dual VNH5019 motor driver shield for Arduino

Posted by Kevin on 24 March 2014
Tags: new products
New revision of the Dual VNH5019 motor driver shield for Arduino

We’ve released an updated version of our dual VNH5019 motor driver shield for Arduino. The VNH5019 is a great solution for driving high-power motors, with each chip able to supply up to 12 A continuously at 5.5 V to 24 V. However, the original version of our dual VNH5019 shield was designed before the Arduino Uno R3 was released, so it lacked pass-throughs for the four new pins (SCL, SDA, IOREF, and an unused pin) introduced by the R3 and present on all newer Arduinos. This makes it harder to stack other shields with it, especially ones that make use of the new I²C pin location. The latest board revision adds these pass-throughs to make the shield fully compatible with the Uno R3 pinout.

For more information, see the dual VNH5019 motor driver shield product page and user’s guide.

12 comments

Hi,

Is it possible to use two of these cards with an Arduino mega to control 4 motors?

Thanks,

Rebecca
Hello, Rebecca.

It is possible to use more than one dual VNH5019 shield on an Arduino, but it would require a lot of changes to get it to work. You would have to remap the control pins, do some additional wiring, and write your own code to set up PWM on the correct pins for all of the shields.

You can read more about how to make some of those changes inside the "Remapping the Arduino Connections" section of the VNH5019 shield's user's guide, which can be found under the Resources tab of its product page:

http://www.pololu.com/product/2507/resources

By the way, we break out the connections to the motor drivers along a single side of the shield, so if you do not need to stack the shields, you could just make your logic connections there. This might make using both shields easier.

You can find a similar forum post here:

http://forum.pololu.com/viewtopic.php?f=15&t=4875

-Jon
Hi,

I have the previously version of this driver.

My question is about the PWM interpretation behavior of this driver.

I've tested to send some PWM fractions to see the output Voltage behavior.

It was not linear.

I had a LiPo 11,7 volts battery connected. However, to get 6V output signal, I had to send a PWM signal of 50 (max. 255).

My doubt is, was it supposed to have a linear behavior? I mean, to get aprox. 6V, send a PWM of 255/2.

The second question is: How do I set the driver to provide 5V output to power the Arduino? I saw here I just have to put the jumper in. It didn't work.

Thanks!! Your products are very good, by the way.
Hello.

The VNH5019 operates in drive-coast mode, so its output is generally not very linear. If you want to get a very linear output then some kind of feedback is probably needed.

The VNH5019 shield does not regulate the voltage it supplies to the Arduino, the jumper simply connects the reverse protected VIN voltage to the Arduino's Vin.

If you are having trouble using your VNH5019 shield, you could post pictures and more technical details about the issue on our forum.

- Grant
Need Help

Goal:
Can the dual VNH5019 motor driver shield for Arduino operate on the "Makeblock Configurable 4WD Robot Kit - Blue" on all 4 motors if two on each side were connected in parallel to one of the two drivers?

Operation:
So they can either move forwards and backwards but also turn around.

Thanks Noob...
Hello.

In general, we usually recommend using a motor driver that has a continuous current rating greater than the stall current of your motor. From the motor specifications I found on this website, it seems like you should be able run two of those motors from each channel on the VNH5019.

- Grant
Hi,

I'm trying to power the arduino by this motor driver but I keep getting zero Volts in VOut port nor VDD port.

How do I enable it? Could you help me?

Thanks,
Hello, Max.

I am sorry you are having problems with your VNH5019 shield. However, the blog is not an appropriate place for troubleshooting your problem. Instead, you might post this on our forum with more details about your setup.

- Jeremy
Can I use this shield to continuously drive a pair of 2.1A motors that are spinning propellers? These are modified bilge pumps (http://store.waterpumpsupply.com/rule1.html) with no feedback circuitry.
Hello, Anon.

As long as the specifications of your modified bilge pump are similar to those of the bilge pump you linked to, I do not see any obvious reasons why it wouldn't work.

-Brandon
Hi guys,

Can i use this drive to control(with arduino), two servo motor with 10A?
and, the code, can be the same of any servo motor?

Since now, i thank you.
Hello, Joas.

It is not clear if you are talking about RC hobby servos or motors that have been removed from inside of some servos. If you are looking for a controller to command servos, you might consider one of our Maestro USB Servo Controllers. This shield works with brushed DC Motors, and each channel can handle 12 A continuously. You can find example code and libraries in the " Programming Your Arduino" section of the " Pololu Dual VNH5019 Motor Driver Shield User’s Guide"

-Derrill

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