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Sorry to hear you are having trouble with your driver. Setting the current limit does not involve any voltage measurements relative to VMOT, so it sounds like you might be probing the wrong pins. As for the broken potentiometer, that can happen if too much force is applied with a tool that is too large. A flat 2mm screw driver generally works best. If you ordered your driver from us, please contact us directly with your order information and we can help you out with a replacement.

Hi, That's our RP5/Rover expansion plate: www.pololu.com/product/1533 We laser cut them out of 1/8" acrylic. If you are comfortable using a vector graphics editor such as Inkscape or Adobe Illustrator, you might consider designing your own plate customized to your project and having it laser cut with us: www.pololu.com/laser

Cool, thanks! @@pololu

Objects that are smaller and reflect less IR are harder to detect (that's why we made the Zumo black). The Zumo 2040 can detect another Zumo pretty well at 12 inches away and a black plastic phone handset at 8 inches away. In a mini-sumo competition it might be a good idea to drive around in case your opponent has a particularly stealthy design.

@@pololu de robot example zumo border detect

😆

Hi, TooSlowTube. The fit for those wheels is supposed to be tight, and they do just press fit on there. There are some instructions for installing that type of wheel on one of our micro metal gearmotors here: czcams.com/video/D6UmjlBW8Ns/video.html

​@@pololu Thanks.

Hi, q zorn. What are you looking for beyond what the Maestro has?

Yes, you could probably use the Arduino "map" function to accomplish the same thing. We wrote out the calculations in a more basic form so that they would be clearer to anyone trying to port the code to another platform. If you have any additional questions, please contact our support or post to the forum: forum.pololu.com/

All of the Maestro documentation is available online. You can find its User's Guide and other useful documentation, links, and sample projects on the Resources tab of any of the Maestros' products pages, for example: www.pololu.com/product/1350/resources

@@pololu When I plug 2 jumper cables in and try to move the motors with the app. My micro controller started smoking. Can you help here?

For troubleshooting assistance, please contact us directly or post on our support forum: forum.pololu.com/

Yes, you can use the "readLineWhite()" function from our 3pi+ library to locate a white line on a black surface.

Yes, you can see a full list of our authorized distributors here: www.pololu.com/distributors

@@pololu they dont have maestro they said yesterday

If you can't find the product you are interested at one of our distributors near you, you can always order from us directly. You can find information about our international shipping options here: www.pololu.com/ordering#international

Hi Nilzie, We don't have any suggestions for a replacement for this board that is in stock. Sparkfun does have an updated version that you can find here: www.sparkfun.com/products/18977 Unfortunately, it looks like they don't have an estimate of when they might have more available.

We can ship directly to China, but you might get better rates from one our of our distributors such as TME: www.tme.eu/cn/zh/

There are a few possible explanations for behavior like this, but figuring out why that is happening in your specific setup will probably require some troubleshooting. CZcams comments are not a good setting for that kind of discussion, so please consider posting on our forum instead: forum.pololu.com Before you post, please review our support page which has some general troubleshooting advice and recommendations for what you should include in your post when you contact us: www.pololu.com/support

See sections 4.7 and 4.8 of the user's guide, which is linked in the video description.

This question doesn't seem to relate to the content of this video. You might try posting to our forum for general questions about driving LEDs: forum.pololu.com/

@@pololu I cant log in I forgot my password and It wont send me an email to change it. I tried many times.

Unless you take additional steps to keep your driver cool, it will overheat if you exceed its continuous current rating of 1.2A. It is possible your stepper motor will work fine with a 1.2A current limit setting (the 1.68A is just the current you must not exceed when operating it).

Yes, these same steps apply to the A4988 black edition.

This one: czcams.com/video/-cAjdT6QN_w/video.html

We can remove the masking from the acrylic before cutting your parts if you specify that in your quote request. The acrylic surfaces will likely have noticeable blemishes from the cutting process, but it should be easy to cover with paint.

Most motors' ratings are specified per phase (per coil), so if that is the case for your motor, you should also set the driver's current limit to 1.5A. Then, you would want to make sure your power supply's current limit is high enough that it does not limit how much current the driver and motor can draw (they will only draw as much as they need; the supply will not "push" current into the system). If you have any more questions, please post to our forum: forum.pololu.com/

What additional capabilities do you wish the 3pi+ had? One obvious feature the ESP32 would add is wireless communication; are there any other features you would like?

We haven't tried it ourselves, but here's a suggestion from one of our Acrylic suppliers on how to get off old masking: www.emcoplastics.com/acrylic-faqs/

@@pololu USED WD 40 Worked great . Cheers - and a safe and prosperous new year

If you ARE looking for a Raspberry Pi robot platform, check out Romi! www.pololu.com/romi

We don't have any immediate plans to add that to our line of Tic stepper motor controllers. If DC motors would work for what you are doing, our Jrk motor controllers support closed-loop positioning for DC motors: www.pololu.com/jrk