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Comments by Brandon
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Moving sculpture Kinetic Little Rain
- 15 June 2026Hello, Roberto.
As noted in the blog post, each motor is driven by its own Tic T500 Stepper Motor Driver. The Tic supports several control interfaces, including TTL serial and I2C, allowing you to control many stepper motors on a single bus. You can find more information about this under the respective subsections of the "Setting up the controller" section of the Tic user's guide.
Brandon
New product: A89301-Based Sensorless Brushless Motor Controller, 50V, 11A
- 7 April 2026Hello.
We do not have any example code specific to using the ESP32 with the A89301-Based Sensorless Brushless Motor Controller, but it has multiple control interfaces that you could provide from an ESP32, including I²C. I recommend reading through our product page and the A89301 datasheet if you have not done so already.
Maxon makes many different BLDC motors, so it is not clear what specific motor you are referring to, but our A89301-Based Sensorless Brushless Motor Controller can deliver up to 11 A to the motor without additional cooling, which is probably the most important specification to consider when checking for compatibility. If you are still unsure, I recommend posting a request for help on our forum with links to the specific motors you are considering.
Brandon
New products: D24V7Fx 36V, 600mA low-cost step-down voltage regulators
- 2 April 2026Hello, Dana.
The thermal shutdown occurs when the ICs internal junction temperature reaches 170°C typical (with a 12°C hysteresis).
Brandon
New product: Logic Level Shifter, 4-Channel, Bidirectional
- 26 March 2026Hello, Russ.
It is not clear to me what is causing that problem, and we have not heard of issues like that before, but this is not an appropriate place to get into troubleshooting. You might consider posting a request for help on our forum and include a lot more details about what you are doing (including pictures of your setup that show all of your connections and information about what is providing the 10V signals). Alternatively, you can email us at support@pololu.com.
Brandon
New products: Pololu Isolated Solid State Relay/Switch, SPST
- 12 August 2025Hello, Richard.
You might be able to make a setup like that, but if you wanted it to be trigged by a single input you would need something like an inverter/NOT gate so only one is closed at a time. Also, depending on the timing it could be possible for both to be on briefly when the signal changes, so your setup might need some additional considerations for that case. Finally, note that this kind of solid-state relay requires power in order to close the switch (unlike a mechanical relay that can maintain a normally-closed connection even when unpowered).
Brandon
Curtis's laser-cut arcade stick case
- 3 April 2025Hello, Franco.
The last sentence of Curtis's post has a download link for a zip file containing all of the design files.
Brandon
New products (and demo): Force-sensing linear potentiometers and resistors
- 27 March 2025Hello.
You can find a wiring diagram for the Force Sensing Linear Potentiometers on page 9 of their integration guide. You can also find it under the "Using the sensor" heading of our FSLP product pages.
Brandon
New products: Shunt Regulators
- 27 January 2025Hello, Alex.
We do not recommend using them in parallel since they are not guaranteed to split the load separately.
- Brandon
Jon's line following robot: Usain Volt 2.0
- 18 April 2024Unfortunately, Jon is no longer working at Pololu, but from my understanding his algorithm was mostly the same as the 3pi code but with different PID coefficients, which he tuned empirically through trial and error. The other differences were mostly due to using different hardware (i.e. a microcontroller, motor library, and number of QTR sensors), If you need additional help with tuning your PID coefficients, you can find some good tips in Ben's posts in this forum thread.
Brandon
3pi+ 2040 Robot full release with additional motor options
- 25 August 2023Hello, Steve.
We do not have any specific plans for a 3pi+ robot with built-in wireless communication features, though it is on a general long-term todo list. Using something like an ESP8266 or some kind of Bluetooth serial link would probably be good options for adding wireless connectivity to the 3pi+.
Brandon