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m5stack / AirQUserDemo

MIT License
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Strange noise sound after deep sleep #8

Open hpsaturn opened 7 months ago

hpsaturn commented 7 months ago

Summary

Regarding the last issue fix https://github.com/m5stack/AirQUserDemo/commit/f27161ff002ecfa25aa0a129351e5da3844b4d64 when the device enter to deep_sleep it produce a weird sound like this showed in the video at the 5 second:

https://github.com/m5stack/AirQUserDemo/assets/423856/f7082a61-960e-4038-93f8-4c5138a3c8c1

Please use headset, and please compare the begging of the video (after the reset button click) with this second. When the device is in execution the sound disappear

lbuque commented 7 months ago

@hpsaturn This should be the sound made by the SEN55 fan.Even if the device enters deep sleep, SEN55 is still active.The purpose of this is that the SEN55 can measure the ambient temperature more accurately.Ambient temperature measurements that are too high make some customers think the equipment is damaged.

hpsaturn commented 7 months ago

The sound is different to the fan sound or any sound of the sensors into the device. Is a sound very clear, like a high frequency, and only happen when the main core go to deep sleep. When it is in execution we don't have any sound. Is similar to some booster sounds, in a inductive component