Collapse-resistant Mesh Networking
I want to build a super simple mesh-network, for a theoretical post-collapse world. I mean collapse as in major infrastructure failing to provide support anymore, so what most people would call off-grid (i guess i have CollapseOS brianrot :3 1). Ideally this would support many forms of interaction, so it could work even if people lost acess to phones. Some previous work I am inspired by is:
- Research actual networking solutions.
- Get a serial-based version working.
- Optimize power usage and online-offline transition
- Build a web interface.
- Probably using something like https://randomnerdtutorials.com/esp32-web-server-arduino-ide/ and a small HTML framework I am currently working on
- Test at a larger scale.
- Deployment at my school!
Hardware usage summary:
- LILYGO® TTGO US(915MHz) x 3: These are ESP32s (IoT microprocessor) with included LoRa (Long Range) radios, with the right bands for FCC compliance
- TTL Serial USB Adapter, this is for the simple Serial-Based adapter for the network. TTL Serial is a common protocol, so almost every device supports it
- 5v 1.2w Solar Panel x 3: The LILYGOs have built-in charging circuits for 18650s, so I don’t need to worry about that. I do need a power source though, and given the target of easy off-grid use, solar seems like the best option
- 3.3-6v to 3.3v Buck Converter: This will jump the 5v power that the solar panels generate to the 3.3v power the TTGOs can handle
- 18650 Batteries x 3: These are just to add in to the TTGOs, so that they can power themselves without having a mains connection.
|LILYGO® TTGO US(915MHz) x 3||https://store.rokland.com/products/lilygo-ttgo-meshtastic-t-beam-v1-1-esp32-lora-915-mhz-wireless-module-wifi-gps-neo-6m-with-oled-display-for-arduino-q202-l206||$128.30|
|TTL Serial USB Adapter||https://www.amazon.com/DSD-TECH-Adapter-FT232RL-Compatible/dp/B07BBPX8B8/||$15.40|
|5v 1.2w Solar Panel x 3||https://www.adafruit.com/product/5368||$55.33|
|3.3-6v to 3.3v Buck Converter||https://www.aliexpress.us/item/2251832868235446.html?gatewayAdapt=glo2usa4itemAdapt&_randl_shipto=US||$8.10|
|18650 Batteries x 3||https://www.amazon.com/Tokeyla-1%EF%BF%B58%EF%BF%B56%EF%BF%B55%EF%BF%B50-Rechargeabe-Batteries-Flashlights/dp/B0BG8CX93Q||$24.99|