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wagiminator / ATmega-Soldering-Station

T12 Quick Heating Soldering Station
https://oshwlab.com/wagiminator/z-solderingstation-smd-v2
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PID buzzing noises. #29

Closed dahayer closed 1 year ago

dahayer commented 1 year ago

I have a strange buzzing noises (not from the buzzer) when using PID controlling, but everything works like a charm. I cannot find the responsible component. Any help will be appreciated. Thanks

wagiminator commented 1 year ago

Strange. Is the noise coming from the soldering station or another device nearby?

dahayer commented 1 year ago

Its from the soldering station i have recorded the noises with my phone if you want to hear it. https://drive.google.com/file/d/1bfbQFNnSnpNc9TIUcPRwxzufM4XHLMXw/view?usp=sharing

wagiminator commented 1 year ago

This could be one of the ceramic capacitors (singing capacitors phenomenon), possibly C7 or C13. You can try using capacitors with the same values but from different manufacturers, or change the PWM frequency in the code.

dahayer commented 1 year ago

I changed both C13 and C7 capacitors and the problem solved no more noises. Thank you very much for your help.