How to Conserve Battery Life with IoT Projects

Sam just shared a new tutorial: "How to Conserve Battery Life with IoT Projects"

If you’ve ever created a project that uses batteries, you’ll be well aware how hard it can be to decide on elements in the project which can affect the battery life. You end up ‘umming’ and ‘ahhing’ for ages about …

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For very low battery usage use BLE instead of WiFi.
Easy Very Low Power BLE in Arduino - Part 1
and Part 2 - Temperature/Humidity Monitor
show you how use a NanoV2 and Si7021 temp/humidity sensor, from Core Electronics
to make a Temperature Humidity Monitor that runs on <30uA both will connected or advertising.