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Comments by Patrick
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New Pololu distance sensors with digital and pulse width outputs
- 7 February 2023Hello, Sean.
The 5 cm, 10 cm, and 15 cm Pololu Digital Distance Sensors are identical except for the configuration of the surface-mount jumpers, near the mounting hole on the front side of the board, which determine the sensor’s operating mode. You can find more detailed information about this in each sensor's product page description under the "Jumper settings (irs16a)" header.
- Patrick
New Pololu distance sensors with digital and pulse width outputs
- 24 October 2022Hello, Jim.
Both the Sharp sensors and the Pololu Distance Sensors depend on infrared light reflections, which will be affected by ambient conditions and target characteristics. That makes it hard to know for whether one of the Pololu Digital Distance Sensors will work better for sure, but I think there is some hope that they could be better. If you decide to try them out, I would suggest testing the version with the longest range that will work in your setup since the longer range sensor should be more sensitive for a given distance.
- Patrick
New D24V150Fx 15A step-down voltage regulator family — our highest-power regulators yet!
- 20 May 2022Hello, Yiannis.
We have tested these regulators at their maximum input voltage, but to the best of my knowledge we have not observed ourselves or heard of anyone else observing behavior like what you described, so there might have been a problem with your setup or that particular regulator. The comments for this blog post are not a good setting for troubleshooting discussions, so please email us, and we would be happy to help figure out what might have gone wrong. In your email, I recommend including a reference to your comment here, your order information, and some pictures of your board and setup.
- Patrick
New product: 130-size, high-power brushed DC motor
- 9 March 2022Hello, Rick.
This is just a blog post; the product page has technical specifications. We do not have a technical drawing available, but it is consistent with the 130-size standard.
- Patrick
37D gearmotors: helical pinion gear, new 150:1 gear ratio, and performance graphs
- 14 October 2021Hello.
There are CAD models (step files) for all of our 37D gearmotors available on their product pages under the "Resources" tab.
What dimensions are you referring to? If you are seeing discrepancies between the dimensions of motors you got from us to what is in our documentation, please send an email to support@pololu.com with your order information along with pictures that show what you are measuring.
- Patrick
New Pololu distance sensors with digital and pulse width outputs
- 24 February 2021Hello, Joseph.
For the sensors with digital outputs all you need your code to do is read a digital input signal. In Arduino, you could do that with a digitalRead() command.
For the pulse width output version, we provided a simple Arduino example program showing how you could read the sensor on its product page.
- Patrick
New products: Magnetic Encoder Pair Kit with JST SH-type Connectors for Micro Metal Gearmotors
- 5 January 2021Hello, Stephano.
There is basic information about the encoders pinout and installation available in the product page description, but we do not have any instructions for use with specific motor controllers. Also, keep in mind that most motor drivers and controllers do not have built-in support for reading encoders, so you might need to use something else to read those signals.
The comments of this blog post are not great for this type of discussion, but if you need additional help you are welcome to send an email to support@pololu.com or make a post on our forum with a description of what you want to do and links to what components you are considering. We might be able to help you assess whether they are compatible and offer some guidance for how to connect them.
- Patrick
Force and torque
- 10 July 2020Hello, Devin.
How much torque your motor needs is going to depend on how fast you want your three pound load to travel that one foot and various details of your specific setup (e.g. the inertia of your conveyor belt pulleys, how much friction there is in your system, etc.). This blog post might help you characterize your system and what you need more precisely, but I would additionally recommend doing some research to find what parts other people have used in similar projects.
- Patrick
New M3 screw lengths
- 9 July 2020Hello, Andrew.
We do not commit to a specific dimension or tolerance, but I just measured a few units and the height is about 2.3mm.
- Patrick
Sanyo pancake stepper motors with encoders
- 4 June 2020Hello, Jim.
The encoders allows you to measure the stepper motor's output up to a resolution of 4000 CPR, or 0.09 degrees. Actually moving your stepper motor to such precise positions would require you to apply sufficient microstepping properly, with at least a 1/32 microstepping ratio.
- Patrick