Sunday, 30 October 2022

HTU21D

The weather station is eating HTU21D humidity sensors. About 3-4 / year.

I'm beginning to think the sensors from Aliexpress aren't genuine

The temperature still works, but humidity stays at 0%

I wouldn't mind if I lived in the tropics and they were permanently wet, but the one that just failed hasn't seen proper rain for months.

Ive started covering them in PTFE tape which protected a genuine SHT for around 10 years.


Replacements

1/3/22 ? PTFE tape, otherwise open. A fair amount of verdi grée on the pins + pcb

30/10/22 sealed in acetic based clear silicone and PTFE tape

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