Poor Man's Solar Node

A cheap, efficient, and fully functional solar-powered LoRa node.

Warning

This project is under development and may undergo significant changes.

Pictures

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If you want to replicate it...

• It's a double-layer PCB with a default thickness of 1.6 mm.
• Diodes D6 and D7 can be removed as they are unnecessary. After removing D7, bridge its pads to maintain circuit continuity.
• You can choose a Schottky diode with lower reverse current to replace D1.
• Use a 5-6V solar panel. The currently selected LDO has a maximum withstand voltage of 6.5V.
• Please note that older versions of the HT-RA62 may not be able to send 200-byte-long messages.

License

GPL-3.0

Copyright (c) 2025, tan