A compact solar-powered control experiment built around an ESP32, a small panel, a 5 V battery pack, and isolated relay switching.
ESP32-WROOM5 V / 1 A panelRelayWeChat mini-program
Project overview
The system explores a tiny solar charging and remote-control setup: a panel charges a sealed 5 V battery pack, while an ESP32 handles control and telemetry. A relay provides isolation for the output load.
Hardware choices will keep evolving as the prototype is tested in real conditions.
CrystalClearX 
