COVID-19 impact: We are still operating and shipping all orders! We are operating with a reduced staff, so for critical requirements, including fighting COVID-19, please contact us so we can identify priorities. Click here for more info.

Comments by Josh

  • New product: Pololu Dual MC33926 Motor Driver for Raspberry Pi

    New product: Pololu Dual MC33926 Motor Driver for Raspberry Pi

    - 14 September 2016

    Hi Karl,

    No, we do not recommend connecting the MC33926 motor driver outputs in parallel to control a single motor, since timing differences in the two units might result in shoot-through. (However, you are correct; the VNH5019 motor drivers are designed so that their outputs can be paralleled.) If your application requires more current than a single driver can handle, you might consider using a higher powered one instead.

    -Josh

  • Video: Setting the Current Limit on Pololu Stepper Motor Driver Carriers

    Video: Setting the Current Limit on Pololu Stepper Motor Driver Carriers

    - 18 August 2016

    Hello, David.

    It looks like that CNC shield is not using one of our drivers, but in general, you would set the current limit to equal either the maximum rated current of the motor or the driver, whichever is lower. The equation to use for determining what VREF voltage to set on the stepper motor driver board's potentiometer to could be specific to that manufacturer, so you might want to approach them for that information. (The equation for our boards can be found directly on the A4988 carrier's product page.)

    -Josh.

  • New product: A-Star 32U4 Micro

    New product: A-Star 32U4 Micro

    - 23 June 2016

    Hello, Andrea.

    Getting an A-Star 32U4 to run on 3.3V at 8 MHz should be possible, but it would not be a straightforward modification since the board was not designed to operate that way. Some of the modifications that immediately come to mind are having to replace the onboard regulator with a 3.3V (or bypass it with an external source), reprogram the fuses on the AVR, and reconfigure the USB connections. If you are interested, a great place to discuss this further would be in our A-Star forum.

    -Josh

  • New product: A-Star 32U4 Micro

    New product: A-Star 32U4 Micro

    - 22 June 2016

    Hello, Andrea.

    The A-Star 32U4 Micro needs at least 5.5 V to function, but we have other low voltage versions such as the A-Star 32U4 Mini LV and the A-Star 32U4 Mini ULV that might work for you. However, please note that those boards do not have any integrated circuitry for LiPo charging or over discharge protection. We do not carry any boards with the LiPo backpack functionality that you mentioned, but we will keep your suggestion in mind.

New Products

Free Circuit Cellar magazine January 2020
100:1 Metal Gearmotor 37Dx73L mm 24V with 64 CPR Encoder (Helical Pinion)
RoboClaw 2x60AHV, 60VDC Motor Controller (V7B)
Pololu Wheel for Micro Servo Splines (20T, 4.8mm) - 60×8mm, Red, 2-Pack
Pololu Wheel for Micro Servo Splines (20T, 4.8mm) - 40×7mm, Black, 2-Pack
380:1 Micro Metal Gearmotor LP 6V with Extended Motor Shaft
380:1 Micro Metal Gearmotor MP 6V with Extended Motor Shaft
Free Circuit Cellar magazine April 2020
TB67S128FTG Stepper Motor Driver Carrier
50:1 Metal Gearmotor 37Dx70L mm 12V with 64 CPR Encoder (Helical Pinion)
Log In
Pololu Robotics & Electronics
Shopping cart
(702) 262-6648
Same-day shipping, worldwide
Menu
Shop Blog Forum Support
My account Comments or questions? About Pololu Contact Ordering information Distributors