Solar power supply for weather station

thingiverse

This is the solar power supply with lithium-ion battery for my wireless weather station (https://www.thingiverse.com/thing:3385510) and my particulate matter sensor (https://www.thingiverse.com/thing:3498877). It relies on a TP4056 module to manage charge and discharge of a 18650 lithium-ion cell, ensuring seamless power flow. A SX1308 step-up voltage module then converts battery voltage to 5V, making it easily compatible with various devices. Next, a precision voltage regulator stabilizes the output to a steady 3.3V. The first charge can be made using any standard micro-usb phone charger, eliminating the need for special equipment. I utilize a high-efficiency 6V/2W solar cell, measuring 136x110mm in size, to harness renewable energy. Two tiny components serve as pin holders for the TP4056 module, allowing for secure and organized installation. These holders fit snugly on top of the 40mm PVC pipe that supports my sensors. To assemble this system, you will need: * 3 small screws measuring approximately 2.9x9.5 in length * A sealant to ensure a watertight connection The detailed schematics and pcb pictures are included for your reference. Additionally, the Openscad source code is provided, but be sure to verify if any variable values have been altered. For more information, please visit: https://blog.zesanglier.fr/2019/04/28/station-meteo-alimentation-solaire/