Solar for IoT
Two documents on powering small battery-backed outdoor devices — a sensor, a weather station, a LoRa mesh node — from a solar panel of roughly 100 mW to a couple of tens of watts. One works two real designs end to end; the other explains why the method works.
Worked Designs
Design by example: five sizing and protection rules, then two worked designs — a Xiao nRF52 MeshCore repeater and a drone-detector node — with power budgets, bills of materials, wiring, how to adapt each to your own device, and a troubleshooting table.
A Practical Reference
Physics first: how a solar cell and its I‑V curve behave, why you need MPPT, how temperature and shading bite, how to size a panel and battery from a power budget, and how to keep a lithium cell alive outdoors — ending in a worked MeshCore-repeater example.