LoRaWAN

LoRaWAN implementation with temperature and humidity sensor / display based on LilyGo T-Echo, LoRaWAN gateway RAK7246G and TTN

Project plan

1. connect temperature / humidity sensor SHT31 to T-Echo Lite
2. show the measurements on the display of T-Echo Lite
3. configure the gateway and register it with TTN
4. create application in TTN and get the TTN keys
5. extend the code on T-Echo Lite about LoRaWAN implementation (sensor authentication, measurement upload)

Connect sensor to T-Echo

• connect SHT31 to T-Echo Lite using the following pins (to be verified)

Sensor pin	T-Echo pin	Arduino pin
VCC	3V3	3.3V power
GND	GND	Ground
SDA	P1.04 (PI.04)	36
SCL	P1.03 (PI.03)	35

Show measurements on T-Echo

Configure gateway

• configure gateway network, internet access, LoRa band, TTN network
• RAK7246G:
• RAK7246G Quick Start Guide
• verify / change the TTN server name to new TTN V3 name (assuming EU1 selected in gateway setup in TTN): eu1.cloud.thethings.network
• enable and restart LoRa services (assuming service name ttn-gateway): sudo systemctl enable ttn-gateway | sudo systemctl start ttn-gateway | sudo systemctl status ttn-gateway
• verify communication of the gateway with TTN: sudo journalctl -u ttn-gateway -f
• RAK5146 PiHAT Kit for LoRaWAN and Concentrator (SPI model)
• 1. RAK5146 Setup with LoRa Basic Station
• 2. Setting Up a LoRa Gateway with Raspberry Pi and RAK5146
• Raspberry Pi OS setup acc. 1.
• Remote connection via SSH acc. 1.
• Post-installation steps (Update, upgrade and reboot Raspberry Pi) acc. 1
• Setup Raspberry Pi’s Interfaces (SPI, I2C) acc. 1.
• Install RAK Common for Gateway acc. 2.
• Configure the Gateway for TTN acc. 2.

Register in TTN

• register the gateway with TTN (outdated, still helpful)

RAK7246G LoRaWAN Network Server Guide

• create organization and application in TTN (outdated, still helpful)

Setup LoRaWAN Network in TTN

• register gateway in TTNS

Setup LoRaWAN gateway on TTN Gateway Pro

Get TTN application keys

• register application with TTN (outdated)

RAK7246G LoRaWAN Network Server Guide

Send measurements to TTN

• use RadioLib in LoRaWAN mode
• implement OTAA (over the air activation) of the sensor / T-Echo
• create the LoRaWAN payload for measurement data with CayenneLPP
• use CayenneLPP library to create LoRaWAN paylod