Re:ESP 8266 Wi-Fi Repeater with Mesh Networking
by egwynn on Tuesday December 26, 2017 @04:56PM
(#16011297)
Funny enough, a battery-powered DHT22 is my next project, so I don’t know yet! But in my other experience the expensive part is powering on the radio, which spikes to 200-300mA at startup and then will sustain around 80mA as long as it’s on.
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Re:ESP 8266 Wi-Fi Repeater with Mesh Networking
by rcarmo on Tuesday December 26, 2017 @05:41PM
(#16011511)
Well, I'm running a test with 2xAA batteries. With a modified version of https://github.com/rcarmo/azure-iot-esp-01-minimal-cpp that only wakes up every 15m to send a single multicast packet and the power LED removed, the battery's still at 3.08V after two months :)