Arduino a solar panel to your Arduino/ESP8266 or ESp32 projects can make them self-sufficient for power and makes them ideal for remote operation.
Code: https://github.com/G6EJD/Processor-So... (MS-EXCEL or OPENOFFICE)
Components: https://www.banggood.com/Wholesale-Ar...

TP4056: https://www.banggood.com/search/tp405...
Battery: https://www.banggood.com/2PCS-INR1865...
Battery Holder: https://www.banggood.com/DIY-1-Slot-1...
Solar Panel: https://www.banggood.com/search/solar...