First Prototype Device

Device in situ at test site  (plastic box at top)  monitoring bird feeders in normal and icy conditions.

We have prototyped a bio-acoustics listening device based on the Raspberry Pi Zero W and Dodotronic Ultramic. We are about to start 24hr continuous run testing in cold weather in two test sites. So far, the power consumption is pretty much as predicted considering cold weather.

A battery that delivers 30,000mAh should give 7 days continuous operation before needing to be recharged, and with a number of power saving options employed on the Pi, the initial tests have certainly borne this out. The cold weather (we have had several days of sub-zero temperatures and snow/ice) has much reduced the battery capacity, which is not surprising given the characteristics of Lithium-Polymer batteries.

Separately, we have now configured a Libelium Waspmote-based temperature, pressure, humidity sensing device to work within our existing LoRaWAN IoT infrastructure.

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