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This compact DIY board is designed to power small outdoor projects like ESP-based sensor nodes or actuators using a combination of solar energy and 18650 batteries.
It includes a TP4056 charging module with integrated protection, a TPS61023 boost converter, and switchable solar and battery paths for maintenance and safety.
The board delivers a stable 5V output and supports 1–2 batteries and up to 5 small solar panels.
📌Components used:
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18650 Li-Ion batteries (use branded cells)
Video
https://www.youtube.com/watch?v=HXCUg6hba9w
Full details, schematics, and use cases can be found on my project page:
👉 https://SmartHomeYourself.de/18650-solar-platine
* Note: The links above are affiliate links. If you use them, I may earn a small commission – this helps support my projects at no extra cost to you.