LK V3.8 with PWM hat no longer working?

[vandariu]

Hello!

I have bought a LK V3.8 with the PWM hat some years ago and tested it with a small LED strip and the dimming worked perfectly! Now, I tested again, including with a PWM fan and it was no longer working! I since also upgraded to the latest firmware (initially it was 1.47a, upgraded to 1.62) and it was even worse, namely the „PWM and PID” section on the device site (192.168....) was missing altogether! I reverted back to 1.47a and the PWM section is back.

Problem: PWM is always on and gives full 100% signal, no matter if I turn it off/on in the webserver (192.168...), if I change the dutycycle, etc... it stays full blast with no change!

What could be the cause and is it fixable?




Thank you in advance for any helpful advice!

[vandariu]

Update!

It seems that only PWM0 and PWM1 are broken. PWM2 and PWM3 are working properly. What could be the cause of this behavior?

[abhiwangame]

If LK V3.8 with PWM Hat has stopped working, follow the following troubleshooting procedures:
Connections: Make sure that the connections between PWM hat and the controller are proper.
Power Supply: Check that the hat and other connected devices get a proper supply of power.
Software: Check whether firmware and LK V3.8 software is up-to-date.
Library Compatibility: The correct libraries such as the Adafruit PWM library are installed and are compatible with the setup.
Test Hat: A basic script to test PWM hat functionality without interference.
Inspect Hardware: Look for signs of damage or overheating on the PWM hat.
Logs and Errors: Review error logs for specific issues.
For further issues, refer to the official documentation or seek the support of the manufacturer.

[stAch]

If LK V3.8 with PWM Hat has stopped working, follow the following troubleshooting procedures:
Connections: Make sure that the connections between PWM hat and the controller are proper.
Power Supply: Check that the hat and other connected devices get a proper supply of power.
Software: Check whether firmware and LK V3.8 software is up-to-date.
Library Compatibility: The correct libraries such as the Adafruit PWM library are installed and are compatible with the setup.
Test Hat: A basic script to test PWM hat functionality without interference.
Inspect Hardware: Look for signs of damage or overheating on the PWM hat.
Logs and Errors: Review error logs for specific issues.
For further issues, refer to the official documentation or seek the support of the manufacturer.

you are using an old overlay - check/uncheck low status -
check if the on/off mode works

deselect the regulator
switch the language to PL, make the appropriate settings and return to English

[vandariu]

Thank you for your help! I shall try to implement your suggestions as soon as possible to see if things go better. It might take a while since I'm finalizing building my home.

Thanks a lot!