Re: [DIYbio] Building an incubator, would like some opinions/help

On 01/05/2013 03:01 AM, Patrik D'haeseleer wrote:
> I couldn't find a price for this Cozir sensor, but it does temperature, humidity and co2, and supposedly only took 2 minutes to
> hook up to an Arduino.

http://www.ttnet.net/ttnet/gotoprd/ET110/090/0/1383639383831343633353339313939303037363137333.htm

datasheet says it has sensirion sht21 on board for rH, T.

Making an open hardware module with the code open and able to use various chinese
zirconium CO2 sensors as promoted for home safety market would be good...and it
could be low power pretty easily. The rH, T sensors could be optional modules.
Temperature is almost always available to within 1 deg C with recent microcontrollers,
since they have voltage references and an internal die monitoring temperature derived
from diode voltage drop characteristics over temperature.

Using sensirion sht21 adds about $7 to the BOM for its convenience.

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