- 2x TTGO LoRa32 ESP32 boards (915 MHz)
- 2x Reed switches (door sensors)
- 1x SSD1306 I2C OLED display (receiver unit)
- Hookup wire
- Enclosure (3D printed or project box)
- Solar Panel: [https://www.amazon.com/dp/B0FD8ZVH6V]
- Battery: [18650 3.7V 3000mAh]
- Charging Module: TP4056 USB-C with protection circuit [https://www.amazon.com/HiLetgo-Lithium-Charging-Protection-Functions/dp/B07PKND8KG]
- Transmitter unit project box: [https://www.amazon.com/dp/B0828387BM]
- One LoRa board is used as the transmitter (outbuilding)
- One LoRa board is used as the receiver (home)
- The transmitter is fully solar-powered since the outbuilding has no utility power
- The receiver is powered continuously inside the house (USB)
- Use a charging module with battery protection
- Match your solar panel voltage to your charging module input (typically 5V)
- Keep wiring short and connections solid for reliability