Build Instructions

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• 1

  1. Gather Components

  - LoRaSense RGB Pi HAT PCB  
  - 40-pin stackable header  
  - SX1278 LoRa 433 MHz module  
  - SHT31 temperature & humidity sensor  
  - 220 VAC / 10 A relay  
  - 5050 RGB LED (if not already soldered)  
  - SMA antenna + cable  
  - Raspberry Pi (any model with 40-pin header)  
  - Soldering iron, solder, flux  
  - Dupont wires or terminal blocks (optional for external microcontrollers)  

• 2

  2. Solder the Stackable Header

  1. Push the 40-pin stackable header into your Pi’s GPIO so it stands straight.  
  2. Slip the LoRaSense PCB onto the header—pins should line up exactly.  
  3. Tack-solder one corner pin on the hat to hold it in place.  
  4. Inspect alignment, then solder all remaining header pins on the hat. 

• 3

  3. Mount & Solder the Modules

  1. Place the SX1278 module into its footprint; ensure the SMA connector hole lines up.  
  2. Solder the SX1278 ground pins first, then VCC (3.3 V) and the SPI lines.  
  3. Seat the SHT31 sensor in its I²C footprint; solder GND, VCC, SDA, and SCL.  
  4. Position the relay; solder its coil pins (VCC, IN) and contact pins (COM, NO, NC).  
  5. If your RGB LED is not pre-populated, solder the 5050 LED and verify its orientation.  

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