Bristol LoRa disaster.radio

This post has been sat around in my drafts for a long time (since 2020-01-23) before I posted it and therefore may no longer be relevant.

I thought I better get on and post this now as a flurry of videos about LoRa have surfaced again.

I ordered two of these in the 868 MHz variant from AliExpress: LILYGO® TTGO Disaster-Radio LoRa32 V2.1 1.6 Version 433/868/915MHZ LoRa ESP-32 OLED 0.96 Inch SD Card Bluetooth WIFI Module

They come pre flashed with the disaster.radio firmware.

Just did some range tests and had really impressive results of 700 m with one unit in hand on foot and the other on a shelf in the QTH second floor.

I suggested some improvements to the project. Below is a couple of my suggestions/bug reports along with related links:

• Routing table error after long uptime or 3+ nodes #38
• disaster-radio-website/issues/4
• 868 Mhz setting for Europe #43 Sam raised the ticket but this is something we discussed in the “Bristol LoRa” WhatsApp group.
  • adds ability to configure lora frequency and spreading factor via con…
  • add lora frequency as config option
  • expose LoRaFrequency and spreadingFactor in public functions
• releases/tag/0.2.0
• Useful docs on the protocol
• What is lora?

Also see

• esptool for flashing the LoRa boards
• My blog post on Arduino package management mentioning platformio
• Bristol HAMNET and 2E0PGS - HSMM-MESH since we’re semi the same group.