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A Self-Contained Data Logging Anemometer
I have made similar thing, but using 2 ds18b20 and esp-12 module (same that is soldered on the Huzzah). with deep sleep for 15 min and wake time ~5 sec it will last about one year (if AA batteries have 1500mAh)in deep sleep the esp consumes less tha 20 micro Amperes. On boards like HUZZAH you have to tak in account LEDs and USB to serial wich is always powered
I see in the picture of the PAN module two ball bearings. Are the placed either side of the gear?
The Nerd Watch
Ethernet Switching - with Arduino
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