Geekworm Full Function Motor HAT for Raspberry Pi 4B/3B+/3B - Robot Expansion Board for Raspberry Pi 4 Molde B, 3B+/3B/2B/B+ (Stepper/Motor/Servo/IR Remote) Review

What can I say? It's a PI and it does so much in such a small package, it's amazing. Great tool to learn programming. Everything is open source.

Works as described. Although I wish the GPIO pins were stronger. Every time I try to pull it out of the PI it bends so much. I'm afraid I'll break it soon.

There is no information on configuring addressing for multiple HATs. The documentation appears to have been copied from similar devices. The site is no help. Why buy this product without the possibility to install additional motors?

bonnet arrived. The capacitor near the voltage regulator wasn't even soldered to the board. It just stuck. See photo. No big deal, I could just heat it up and skip it. Then it was tested. NONE of the servo ports work, ONLY the M3 stepper port works. I hope it's just a bad board. I will update when I get a replacement.

I love that this board drives 2-12 volt DC motors for my robot. The problem is that I'm new and need some code to do it standalone. There really is nowhere to find the "code"! I'm 66 'cause I'm crying out loud and teaching this all by myself sucks. I run the DCTest.py file and it spins in circles, I switch to another motet and it spins backwards. But all other code in Raspi-MotorHat needs to be debugged. So I learn as I go without really remembering what I've already done. It's so frustrating…

same embedded chip, they must have the same basic refresh rate. Most commercial servos are designed to run at 50Hz and will not work if you crank the frequency much higher. Many DC motors stall at low speeds with a 50 Hz duty cycle under light loads. Frequency. They usually require 300 Hz or preferably higher. So you can't use this board for both servo and motor speed control which is why I bought this board as it advertised both. I had to install a separate HAT servo controller on my Pi and…

I bought two of these devices to use with a Raspberry 4B 8GB RAM microcontroller. Although independent of each other, the two devices worked as intended. When I tried to cascade them over I2C I found that communication with each of them was broken. Using broadcast address 0x70 would both do their job, but I needed to isolate their I2C calls. The i2cdetect clock, which monitors 0x6E and 0x6D (the addresses of the two boards), regularly reported its presence. The Pi also complained from time to…

Great little board, the only one I've found for the Raspberry Pi that supports all three basic motor types - DC, stepper and servos . I wasn't sure what type I needed for my project so this helped me narrow it down. As far as stacking/addressing goes, it works like a charm (although there's no documentation). There are four solder points on the board labeled A0-A3 that control the address. Solder connects two small pins. They're soldered, so the address is 0x6f. Use an iron and solder wick to…