需求
“Draw a solar-powered ESP32 weather station circuit with a 6 V solar panel, diode, 3.7 V battery, power switch, 3.3 V regulator, capacitors and ESP32.”
接著試試Add a battery charge indicator LED.Replace the 3.7 V battery with a 12 V battery and regulator.
這張圖裡有什麼
看懂背後的決策。
01
Solar panel feeds battery through a Schottky diode to prevent reverse current
02
LDO regulator provides stable 3.3 V for ESP32 and sensors
03
Battery supplies the ESP32 when sunlight is unavailable
Any small off-grid IoT or weather-monitoring node requiring solar charging and battery backup.