|Posted by:||Lab Coat|
|Previous:||Soil Moisture Time Domain Reflectometry (TDR) Probe|
So I received this plant monitor from China recently, and finally had a chance to play with it / tear it down. I would be remiss if I didn't state my disappointment with having to register an email address (un/pw) for usage / access to the iOS app. Suffice it to say but it was a burner address.
More details to come...
In the package.
It's a little hard to make out, but I see no FCC ID's nor any Bluetooth Sig ID's.
Battery cover removed.
Top side of board ... They use a Dialog DA14580 (cortex m0) for BTLE comms. PCB-trace IFA antenna is in upper right quad. Very top is a simple photodiode for light measurement.
Bottom side (with battery holder).
Closer shot of the Dialong BTLE part.
Not sure, but I suspect that this is an op-amp. I *think* they use it in the permittivity / dielectric measurement of the water content of the soil. It does NOT appear to be used in the Ion conduction (conductivity) measurement.
|@ February 3, 2017 10:48:21 AM CST ( )|
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