Comments by Jon

  • Advanced hobby servo control pulse generation using hardware PWM

    Advanced hobby servo control pulse generation using hardware PWM

    - 23 June 2014

    Hello, Lefteris.

    I am sorry you are having trouble controlling your servos; I think some people on the Pololu forum might be interested in taking a look. I recommend posting to the Software and Microcontrollers section, and including your code as well as oscilloscope traces.

    -Jon

  • New product: A-Star 32U4 Micro

    New product: A-Star 32U4 Micro

    - 12 May 2014

    Hello, Chris.

    Thank you for the compliments and feedback. Can you tell us a little bit more about what you are doing?

    -Jon

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

    New revision of the Dual VNH5019 motor driver shield for Arduino

    - 2 May 2014

    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

  • Jon's dead reckoning robot

    Jon's dead reckoning robot

    - 16 April 2014

    Hi, Jon.

    I had not thought of that. It sounds like a fun alternative configuration (the movement would be fun to watch!), but I suspect that there might not be enough time for the microcontroller to react to the readings from the QTR sensors if the array is placed directly between the drive wheels. In fact, I think it's better to have the sensor as far forward on your robot as it can go, though the length of your robot should probably be limited by the smallest turn radius in the line following course.

    I should also point out that I based my chassis off of this line following robot.

    It's pretty quick, follows the line well, and has very far forward line sensors. So, I suspect that while moving the location of that sensor array back toward the drive wheels now might make it easier for my current code to follow the line, I should probably just change up my code to line follow better.

    -Jon

  • Now with USB: New RoboClaw 2x15A and 2x30A motor controllers

    Now with USB: New RoboClaw 2x15A and 2x30A motor controllers

    - 31 January 2014

    Hello.

    We have a list of Pololu-related RSS feeds that you can subscribe to. Following our blog is probably the best way to keep up-to-date with us, but we also have a dedicated New Products feed. You can find a list of all of our RSS feeds here:

    http://www.pololu.com/feeds

    You might also consider following our Facebook, Twitter, and Google+ pages. You can find links to our social media here:

    http://www.pololu.com/contact

    Also, if you make an account on our website, you can sign up for our mailing list through the Acquaintance Form section of your Pololu account settings:

    https://www.pololu.com/account/survey

    -Jon

  • LPS331AP pressure sensor test flight

    LPS331AP pressure sensor test flight

    - 15 January 2014

    Hello.

    The black mounting board shown in those pictures is our RP5/Rover 5 Expansion Plate:

    http://www.pololu.com/product/1531

    -Jon

  • Solar Tracker

    Solar Tracker

    - 6 January 2014

    Hello.

    We did not make this robot, but you might try messaging the YouTube channel that uploaded the video (ScienceOnline) or visiting hilaroad.com, which is mentioned in the video as a source for more information.

    You can find more information about our Maestro servo controllers here:

    http://www.pololu.com/category/12/rc-servo-controllers

    -Jon

  • New products: Step-up Voltage Regulators U1V11F3, U1V11F5, and U1V11A

    New products: Step-up Voltage Regulators U1V11F3, U1V11F5, and U1V11A

    - 10 December 2013

    We are not disclosing that part (yet). Are you looking for some specification on our assembled board, or are you interested because you want to use the chip in your own design?

  • New products: Optical encoders for micro metal gearmotors

    New products: Optical encoders for micro metal gearmotors

    - 29 October 2013

    Hi, Yang.

    You can find the datasheet for the sensor used in our optical encoder kits under the "Resources" tab of either of their product pages. For example:

    http://www.pololu.com/catalog/product/2590/resources

    How did your sensor break?

    -Jon

  • New products: Optical encoders for micro metal gearmotors

    New products: Optical encoders for micro metal gearmotors

    - 20 September 2013

    Hello.

    We are definitely planning on expanding our selection of motors with backshafts now that we have encoders for them. Generally speaking, the 5:1 gear ratios have not been very popular, so I'd be interested to hear more about what you want to do with them.

    -Jon