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There are esp-lora boards including lipo power management you can start with.

The ESP has a few deep sleep modes, and there's a lot you can do to optimize them.

I highly recommend Andreas Spiess on youtube.

EDIT: Heads up that moisture sensors have reliability issues, Andreas's video 463 talks about them.

So my thought was to utilize the capacitive soil moisture sensor and then coat the sides of the PCB with a waterproofing epoxy as Andreas recommended. My hope being that even if it craps out, I can just swap out the sensor, and since they are so cheap it won't be a big deal.

Also, great to know that there esp-lora board w/ lipo power included!

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