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Comments by Derrill
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David's line following robot that learns the course
- 19 April 2017Hello, Srikrishna.
There is a link to the code David used in the last sentence of the post.
-Derrill
Video: Setting the Current Limit on Pololu Stepper Motor Driver Carriers
- 11 April 2017Hello,
The logic power connections to the reset and sleep pins are needed to measure the Vref voltage. In the video, the DRV8825 carrier is set up following all the connections shown in the minimal wiring diagram from the carrier's product page except the motor connections.
-Derrill
37D mm metal gearmotors with encoders and end caps
- 5 April 2017Hello, Tao.
The product pages for those 37D gearmotors with encoders have a chart in the "Using the encoder" section that details the function of each wire by color. If you need more assistance or have technical questions you should contact us via email at support@pololu.com or post a request for help on our forum.
-Derrill
Video: Setting the Current Limit on Pololu Stepper Motor Driver Carriers
- 2 March 2017Hello, Dimitar.
You can connect the black probe to any of the GND connections on the stepper motor driver carrier.
Understanding battery capacity: Ah is not A
- 12 January 2017Hello, Alex.
Technical support issues like this are best handled on our forum; please post your questions there.
-Derrill
New product: Logic Level Shifter, 4-Channel, Bidirectional
- 19 August 2016Hello, Michel.
It should be fine over the typical -40 to 125° C range.
New products: Magnetic quadrature encoders for micro metal gearmotors
- 17 August 2015Hello, Bob.
None of our Micro Metal Gearmotors come with encoders pre-installed. You might be referring to either our 25D gearmotors or 37D gearmotors with encoders.
We do not carry the encoders for either the 25D or 37D gearmotors separately, and they are not compatible with our Micro Metal Gearmotors.
For our Micro Metal Gearmotors, the highest CPR we carry is our Optical Encoder Pair Kits for Micro Metal Gearmotors used with the 5 tooth encoder wheel, which gives a CPR of 20. However, it is might be hard to get clean readings when using the optical encoders and 5 tooth wheel. Instead we recommend using our Magnetic Encoder Pair Kit for Micro Metal Gearmotors with a CPR of 12.
-Derrill
New product: CH Robotics UM7-LT orientation sensor
- 5 January 2015Hello, luis c.
You can get those cables from CH Robotics (the manufacturer of the UM7-LT Orientation Sensor).
-Derrill
Two new motor driver shields for Arduino
- 10 November 2014Hello, Lyubomyr D.
The pinouts and spacing for the Pololu DRV8835 Dual Motor Driver Shield for Arduino do not allow more than one shield to be installed. You might be able to use the board as a general purpose driver and write your own Arduino sketch to control the second DRV8835. Also, you might be able to use our library for the DRV8835 shield as a base for your own sketch.
- Derrill
Two new motor driver shields for Arduino
- 29 August 2014Hello, Corey.
Those through-holes are larger to accommodate wires for those customers who want to solder their connections directly to the board. You can see how those terminal blocks should look installed in this picture of a similar product. With a good soldering iron, you should be able to heat up both the through-holes and the terminal block leads at the same time, then feed solder in until it forms a nice fillet like those in the picture.
-Derrill