TRAWM - T Rust Air Wireless Monitoring

trawm is the firmware for Pimoroni Badger 2040 W for air quality monitoring using Airthings Wave Plus via Bluetooth LE. It doesn't require any additional settings, just install & run.

It's supposed to be energy efficient and work on AA/AAA batteries for months/years

License

trawm is licensed under Apache License, Version 2.0 (LICENSE or http://www.apache.org/licenses/LICENSE-2.0)

How it works

sequenceDiagram
    participant B as Badger 2040 W
    participant A as Airthings Wave Plus
    loop Every N minutes
        Note over B: Wake up by RTC alarm
        Note over B: BLE Scan
        opt Device found
            B->>A: BLE Connect
            A->>B: Get air quality values
            Note over B: Display values on E-Ink
        end
        Note over B: Set RTC alarm and deep sleep
    end

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How it looks

How to flash the Badger 2040 W

• Clone this repo
• Install rust + cargo using rustup: https://rustup.rs
• Install elf2uf2-rs: cargo install elf2uf2-rs
• Connect Badger 2040 W
• Switch it to the boot-loader mode (Hold reset + bootsel buttons together, the RPI-RP2 virtual disc should appear)
• Run cargo build --release && cargo uf2-deploy in project dir