Comments by Claire

  • New high-current stepper driver carrier with SPI: AMIS-30543

    New high-current stepper driver carrier with SPI: AMIS-30543

    - 17 July 2015

    Hi, Heinz.

    The SLA output on the AMIS-30543 is an advanced and complicated feature, so we have no immediate plans to make a beginner example for using it. We appreciate the feedback though, and will keep it in mind.

    -Claire

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

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

    - 17 July 2015

    Hi, ManBearPig.

    I am glad you found the video helpful! We do have a few videos for some of our other products. You can find all of our videos on our Youtube page.

    -Claire

  • New product: LSM303D 3D Compass and Accelerometer Carrier

    New product: LSM303D 3D Compass and Accelerometer Carrier

    - 9 June 2015

    Hi, Cliff.

    The only Arduino library we have for the LSM303 is the one you linked to.

    It looks like you also posted this question on our forum, which is a better place to discuss technical support matters, and another forum member responded. If you have more questions, please continue the discussion there.

    -Claire

  • New high-current stepper driver carrier with SPI: AMIS-30543

    New high-current stepper driver carrier with SPI: AMIS-30543

    - 26 May 2015

    Hi, Joe.

    We generally prefer metric units, too, but when the standard pin spacing is 0.1", dimensions in inches are generally much nicer. For example, you can immediately tell that a row spacing of 0.7" is breadboard-compatible; can you easily tell if a spacing of 1.778 cm is breadboard compatible?

    -Claire

  • David's line following robot that learns the course

    David's line following robot that learns the course

    - 11 May 2015

    Hi, Dattaraj.

    The robot in this post is a custom robot. We do not sell a kit of the parts used in it, but there is a list of most of the components used in this earlier blog post about the robot.

    -Claire

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

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

    - 17 April 2015

    Thanks, I am glad you liked the video! We would love to hear suggestions for other products or topics you would like to see more videos about.

    -Claire

  • New revision of the Dual VNH5019 motor driver shield for Arduino

    New revision of the Dual VNH5019 motor driver shield for Arduino

    - 27 February 2015

    Hi, Photodude.

    Thanks for the compliments on our driver and the great feedback! It would be convenient for all of the external connections to the shield and controller to be on one side and for the remapping jumpers to be closer to extra I/O pins. Unfortunately, the USB connector and barrel jack on the Arduino Uno would interfere with the leads of the terminal blocks that stick out the bottom of their through holes if we were to just move them to the opposite edge of the board. As for the pin mapping, we tried to pick the least useful Arduino pins that could work with our shield. It's hard to avoid incompatible pin choices with so many different shields people might want to combine. We will keep all of your feedback in mind for any future revisions or shields.

    -Claire

  • New Product: 5V, 5A Step-Down Voltage Regulator D24V50F5

    New Product: 5V, 5A Step-Down Voltage Regulator D24V50F5

    - 21 January 2015

    Hi Steve.

    We do not have a particular maximum operating temperature rating for these regulators. In general, as the temperature goes up, the lifetime of various components goes down. Among the components likely to limit lifetime are the larger capacitors, which have a rating of 2000 hours at 105 degrees C. However, other components typically get much hotter than the capacitor, and the temperature distribution across the board depends on many factors, such as ambient temperature, load current, and input voltage.

    If you are seeing only 50 degrees (how are you measuring that?) with 12 V in, 14 V should be fine. How much current are you drawing?

    The mounting holes on these regulators (and most of our other boards) are not electrically connected to ground or any other node in the circuit. If you want to mount the regulator to a heat sink with maximum effectiveness, you should probably use some thermal gap-filling material so that the side with the low-profile components can conduct heat into your heat sink. Be careful not to short anything out on the heat sink!

    -Claire

  • New Product: 5V, 5A Step-Down Voltage Regulator D24V50F5

    New Product: 5V, 5A Step-Down Voltage Regulator D24V50F5

    - 15 December 2014

    Hi.

    Sorry, we don't have those characteristics well characterized since they vary a lot with parameters like load and input voltage. We do not especially optimize for ripple, but it will generally be under a few hundred millivolts peak to peak. The switching frequency changes with load, but the highest frequency is around 600 kHz.

    -Claire

  • New Product: 5V, 5A Step-Down Voltage Regulator D24V50F5

    New Product: 5V, 5A Step-Down Voltage Regulator D24V50F5

    - 6 October 2014

    Yes. We are planning to have several other output voltage versions of these regulators out within the next month.

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