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SHT30 ARD

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S. Petrukhin:
Hi, friends!

Please help me understand the humidity sensor SHT30-ARD.
Sensirion does not have such a sensor or it is very old. Perhaps this is some kind of Chinese version.

This sensor is not a SHT30-DIS (have't I2C) and not a SHT30-ARP (have't analog output).
When power is applied to it, a short pulse passes to pin 1 and then a sequence of 5.4 seconds duration out to pin 4.

What is it and how to decode it?

ebastler:
For starters, what indication do you have that such a chip exists?  :-//

S. Petrukhin:

--- Quote from: ebastler on June 06, 2023, 03:57:01 pm ---For starters, what indication do you have that such a chip exists?  :-//

--- End quote ---

It's on my desk and works in someone else's system.  :)

ebastler:

--- Quote from: S. Petrukhin on June 06, 2023, 04:14:52 pm ---
--- Quote from: ebastler on June 06, 2023, 03:57:01 pm ---For starters, what indication do you have that such a chip exists?  :-//

--- End quote ---

It's on my desk and works in someone else's system.  :)

--- End quote ---

I guess I was curious about the exact lettering on the chip, and what the package looks like.  ;)

S. Petrukhin:

--- Quote from: ebastler on June 06, 2023, 04:24:11 pm ---
--- Quote from: S. Petrukhin on June 06, 2023, 04:14:52 pm ---
--- Quote from: ebastler on June 06, 2023, 03:57:01 pm ---For starters, what indication do you have that such a chip exists?  :-//

--- End quote ---

It's on my desk and works in someone else's system.  :)

--- End quote ---

I guess I was curious about the exact lettering on the chip, and what the package looks like.  ;)

--- End quote ---

The appearance of a regular ST30. 
The connection is very similar to the SHT30-ARP, but it outputs a digital signal.
Inscription:

SHT30
ARD33P

I can take a photo only tomorrow...

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