Power ESP32/ESP8266 with Solar Panels | tecno4 | Scoop.it
From randomnerdtutorials.com - May 2, 2019 3:14 PM
This tutorial shows step-by-step how to power the ESP32 development board with solar panels, a 18650 lithium battery and the TP4056 battery charger module. The circuit we’ll build is also compatible with the ESP8266 or any microcontroller that is powered at 3.3V.