Comments by Ben

  • New products: Assembled Zumo 32U4 robots

    New products: Assembled Zumo 32U4 robots

    - 22 January 2016

    Hello, Bruce.

    Sorry, we have not made the LED holder an individual product yet. If you email us with your order information, we can send you one (along with the original 3D file if you want to print an earlier version for yourself).

    - Ben

  • New product: FEETECH FS90R Micro Continuous Rotation Servo

    New product: FEETECH FS90R Micro Continuous Rotation Servo

    - 5 October 2015

    Hello.

    I am sorry you were not happy with these servos. As I said in my reply to your email, you might just be expecting too much from these. Sure, it would be nicer if these were smoother, but like you, we do not know of any other continuous micro servos, and for a few bucks, many people might still prefer these to having to modify regular servos themselves. This speculation is based on our having sold thousands of these without complaints (yours is the first negative feedback that I recall).

    By the way, does our new wheel for this servo work with that HXT900 servo?

    - Ben

  • New products: Assembled Zumo 32U4 robots

    New products: Assembled Zumo 32U4 robots

    - 31 August 2015

    Hello.

    I am glad to hear you are delighted with your Zumo 32U4! We plan on making the new LED holder and blade available as products on our web site later this week (I'll make another blog post about it when we do). If you place an order for some other parts before then and email us, we can throw in a free LED holder.

    - Ben

  • New version of the Zumo Shield for Arduino - now with full IMU!

    New version of the Zumo Shield for Arduino - now with full IMU!

    - 14 January 2015

    Hi, Jimmy.

    Blog comments aren't a very good place for this kind of discussion, but we would be happy to help you out if you post your questions on our forum.

    - Ben

  • New product: Addressable high-density RGB LED strip

    New product: Addressable high-density RGB LED strip

    - 25 September 2014

    Hi, Eric.

    Thanks for pointing that out; it should be fixed now.

    - Ben

  • Video: LVBots May 2014 maze solving competition

    - 16 June 2014

    Hello, whoami. Is there any particular robot you want to hear more about? If you are just looking to get started, the 3pi is a good platform, and we have a sample maze-solving program for the 3pi robot that you can build off of to make something faster:

    http://www.pololu.com/docs/0J21/8

    The code running on my 3pi in the video is custom-written, heavily tuned for this specific style of course (e.g. it only works if my tires and the course are clean), and very ugly since it was frantically written the night before a competition six years ago, so it's probably not that helpful for me to post it, but I would be happy to give you some pointers on improving our sample 3pi maze-solving code. You might find the following forum thread helpful with that:

    http://forum.pololu.com/viewtopic.php?f=29&t=6586&p=31518#p31518

    Also, I wrote and shared some maze-solving code that works on looped and non-looped mazes (it uses an entirely different, more complicated algorithm so it can deal with loops). If you want to take a look at that, see:

    http://forum.pololu.com/viewtopic.php?f=29&t=3955&p=18739#p18739

    - Ben

  • Force and torque

    Force and torque

    - 6 February 2014

    Hello, Inaam.

    I just want to add that if your stepper motor torque is specified in N*m rather than kg*cm, then you would multiply the 2 kg by 9.81 (and don't forget to convert the radius of the pulley to meters):

    torque = (2 kg)*(9.81 N/kg)*(0.025 m) = 0.5 N*m.

    - Ben

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