ESP32: solar + 18650 battery for perpetual projects
Add a small solar panel to your 18650 battery setup for perpetual operation. The math for sizing the panel and the protection circuit you actually need.
Tag
#solar
2 tutorials
ESP32: build a solar-powered trail camera
ESP32-CAM with PIR motion sensor, SD card storage, and solar power. Captures images when motion is detected and stores them on the SD card.