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Comments by Claire
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New MOSFET-based power switches
- 16 September 2016Hi, Thomas.
There is no microcontroller in our pushbutton power switch circuits, so they cannot be reflashed, but if your system has a microcontroller in it, you might be able to add an external pushbutton to the A pin on the board and get the behavior you want. A similar application where the user wanted to push a button when their system was off to turn it on, and then detect any additional button pushes with a microcontroller and initiate a power down sequence was discussed in this thread on our forum. You might be able to use the same circuit and program your microcontroller to monitor the button for a few seconds to decide when to turn off.
-Claire
New Product: 5V, 5A Step-Down Voltage Regulator D24V50F5
- 20 July 2016Hi, Paul.
The regulator does not have a microcontroller on it. It uses an IC designed specifically for controlling the circuitry of a buck regulator.
-Claire
Video: Setting the Current Limit on Pololu Stepper Motor Driver Carriers
- 13 June 2016Thank you for the feedback. What potentiometer(s) do you like?
-Claire
New MOSFET-based power switches
- 31 May 2016Hi, Hu.
Our pushbutton power switches have an OFF input which allows a microcontroller powered by the switch to turn off its own power.
-Claire
The Pololu Forum now uses Discourse
- 2 May 2016Hello.
Unfortunately, we only offer assistance in English. A distributor near you might be able to offer you help in another language. You can find a list of our distributors here:
http://www.pololu.com/distributors
If you are comfortable translating your question into English, or if you use something like Google Translate, you might try posting to our forum:
https://forum.pololu.com/
or emailing us:
https://www.pololu.com/contact
-Claire
Video: Setting the Current Limit on Pololu Stepper Motor Driver Carriers
- 27 April 2016Hi, Vijay.
You can enable subtitles for the video by clicking on the settings button at the bottom right corner of the YouTube video's user interface overlay. You might also find it helpful to read the "Current limiting" section of our stepper motor driver carrier product pages, for example:
https://www.pololu.com/product/2133
-Claire
New products: G2 High-Power Motor Driver 18v25 and 24v21 (and price drops for other G2 drivers)
- 4 April 2016Hi, Gino.
We do not commit to or disclose the components used on our G2 high-power motor drivers.
-Claire
New Product: 5V, 5A Step-Down Voltage Regulator D24V50F5
- 18 March 2016Hi, David.
The D24V50F5 should be able to handle the combined ~3.5A draw of your Raspberry Pis. I don't have any specific recommendations for a LiPo battery, but anything 2S or more that has enough instantaneous current output and capacity for your application should be fine. If you are new to selecting batteries, this blog post about battery capacity might be helpful. If you have more questions about how to use that regulator in your project or general electronics questions, you might consider posting them on our forum.
-Claire
New revision of the Dual VNH5019 motor driver shield for Arduino
- 22 February 2016Hi, Criz.
You could use a 6V motor with the VNH5019, and I think that all of our 6V gear motors have stall currents under 12A, so the VNH5019 should be able to handle their current draw. In this case, the thing to note is that using a brushed DC motor with a voltage that is higher than its rated voltage will increase its performance (speed and torque), but will also increase the current draw and decrease the motor's lifetime.
-Claire
Video: Setting the Current Limit on Pololu Stepper Motor Driver Carriers
- 15 February 2016Hi, Bob.
Thank you for the feedback. We are glad you found the video helpful!
-Claire