Tell me more ×
Electrical Engineering Stack Exchange is a question and answer site for electronics and electrical engineering professionals, students, and enthusiasts. It's 100% free, no registration required.
up vote 1 down vote favorite

I like to interface a humidity sensor over the I²C bus.

It should come in a small package, and consume little power. Accuracy isn't that important. I'm using the DS1621 as temperature sensor, I'd like something similar, but for a humidity sensor.

After looking for modules with my criteria, I came across the HYT271, but that thing is ridiculously expensive. The low-cost version HYT371 has about the characteristics I'd need, but it's currently not available from my dealer of choice...

I need something reasonable accurate for ambient temperature measuring, and at the same time not too expensive. Should be in the range of a few euros. (Bonus points if those chips can be sampled).

share|improve this question

1 Answer

up vote 1 down vote

Sensirion has combined temperature/humidity sensors. Their SHT21 and SHT25 have an I2C interface. Both come in a small DFN-6 package.

share|improve this answer
DFN-6 is a bit tiny for manual soldering. But I'll take a look at the other package options. – polemon Apr 28 '11 at 10:50
SHT25 looks really interesting, but it's like not available whatsoever. I guess I'd have to wait till engineering samples become available. Accuracy wise, this thing should be excellent. – polemon Apr 28 '11 at 17:43
Just tried to sample the SHT21: Nope, they're not gonna send me one to my private address. They might send them to my university, though. But it seems you may order just one at a time... – polemon Apr 28 '11 at 21:58

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.