aranet-core

Core BLE library for Aranet environmental sensors.

This crate provides low-level Bluetooth Low Energy (BLE) communication with Aranet sensors including the Aranet4, Aranet2, AranetRn+ (Radon), and Aranet Radiation devices.

Features

• Device discovery — Scan for nearby Aranet devices via BLE
• Current readings — CO₂, temperature, pressure, humidity, radon, radiation
• Historical data — Download measurement history with timestamps
• Device settings — Read/write measurement interval, Bluetooth range
• Auto-reconnection — Configurable backoff and retry logic
• Real-time streaming — Subscribe to sensor value changes
• Multi-device support — Manage multiple sensors simultaneously

Supported Devices

Installation

[dependencies]
aranet-core = "0.1"

Usage

use aranet_core::{Device, scan};

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    // Scan for devices
    let devices = scan::scan_for_devices().await?;
    println!("Found {} devices", devices.len());

    // Connect to a device
    let device = Device::connect("Aranet4 12345").await?;

    // Read current values
    let reading = device.read_current().await?;
    println!("CO₂: {} ppm", reading.co2);
    println!("Temperature: {:.1}°C", reading.temperature);

    // Read device info
    let info = device.read_device_info().await?;
    println!("Serial: {}", info.serial);

    // Download history
    let history = device.read_history().await?;
    println!("Downloaded {} records", history.len());

    Ok(())
}

Platform Notes

Device identification varies by platform:

• macOS: Devices are identified by a UUID assigned by CoreBluetooth (stable per Mac, but differs between Macs)
• Linux/Windows: Devices are identified by their Bluetooth MAC address (e.g., AA:BB:CC:DD:EE:FF)

Examples

Run the examples with:

# Scan for nearby devices
cargo run --example scan_devices

# Read current sensor values
cargo run --example read_sensor

# Download measurement history
cargo run --example download_history

Related Crates

This crate is part of the aranet workspace:

Crate	crates.io	Description
aranet-types		Shared types for sensor data
aranet-store		Local data persistence
aranet-cli		Command-line interface
aranet-tui		Terminal UI dashboard
aranet-service	-	Background collector and REST API
aranet-gui	-	Desktop GUI application
aranet-wasm	-	WebAssembly module

License

MIT

Made with ❤️ by Cameron Rye