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SPARROW

SPARROW (Solar-Powered Acoustic and Remote Recording Observation Watch) is Microsoft AI for Good Lab's open-source edge AI system for wildlife monitoring in the most remote regions of the world.

Solar-powered and equipped with multi-modal sensors, SPARROW collects biodiversity data from camera traps, acoustic monitors, and environmental sensors. It processes that data on-device using PyTorch-Wildlife models running on the NVIDIA Jetson Orin Nano — no cloud required for inference — then transmits results via Starlink low-Earth-orbit satellites for near-real-time insights anywhere on the planet.

What SPARROW Does

A single SPARROW unit autonomously:

  1. Collects data from up to 150 solar WiFi camera traps, an AudioMoth acoustic sensor, and I²C environmental sensors (temperature, humidity, pressure)
  2. Runs AI models on-device via NVIDIA Triton Inference Server — MegaDetector v6 for animal/human/vehicle detection, species classifiers for identification, and bird-specific detectors
  3. Manages power intelligently using MPPT solar charging, LiFePO4 batteries, and dynamic component scheduling for continuous off-grid operation
  4. Transmits data via Starlink satellite when connectivity is available; stores data locally when offline and syncs automatically on reconnect
  5. Scrubs privacy data — automatically detects and removes human-related images before upload

All services run in Docker containers on the Jetson, orchestrated by Docker Compose.

Key Capabilities

Capability Details
On-device AI inference MegaDetector v6, Amazon species classifier, bird detector — all as ONNX models on NVIDIA Triton
Camera trap support Up to 150 solar WiFi cameras per unit (e.g., Reolink Argus Eco+)
Acoustic monitoring AudioMoth integration for bioacoustics (birds, bats, insects)
Global connectivity Starlink Mini satellite uplink — works in locations with no cellular or WiFi
Solar autonomous 24V LiFePO4 battery + MPPT solar controller; designed for months of unattended deployment
Environmental sensing Temperature, humidity, pressure, gas (BME688 + SHTC3 I²C sensors)
Privacy by design On-device human image scrubbing before any data leaves the device

Architecture

┌─────────────────────────────────────────┐
│  SPARROW Unit (Weatherproof IP65 Box)   │
│                                         │
│  ┌─────────────────────────────────┐    │
│  │  NVIDIA Jetson Orin Nano        │    │
│  │  ├── sparrow (Docker)           │    │
│  │  │   ├── Camera polling/ingest  │    │
│  │  │   ├── Triton inference       │    │
│  │  │   ├── Power mgmt (solar)     │    │
│  │  │   └── Data sync + FTP upload │    │
│  │  └── starlink (Docker)          │    │
│  │      └── Satellite link monitor │    │
│  └─────────────────────────────────┘    │
│                                         │
│  Power: Solar panels → MPPT → LiFePO4  │
│  Network: Starlink Mini satellite dish  │
│  Sensors: AudioMoth, I²C env sensors   │
└─────────────────────────────────────────┘
         │ Data upload (Starlink)
         ▼
  SPARROW Dashboard (cloud)
  sparrow-earth.com

Getting Started

  1. Hardware Setup — Bill of materials, component overview, and assembly guide
  2. Software Setup — One-click Jetson setup script, Docker architecture, AI models
  3. Cite Us — How to cite SPARROW in publications
  4. GitHub Repository — Source code, issues, and contributions

Part of the Microsoft Biodiversity Ecosystem

Repository Description
microsoft/Biodiversity Umbrella hub — PyTorch-Wildlife, MegaDetector, ecosystem overview
microsoft/MegaDetector Animal/human/vehicle detector for camera traps
microsoft/Pytorch-Wildlife Unified AI framework: detection + species classification
microsoft/MegaDetector-Acoustic Bioacoustic AI for audio-based wildlife detection and classification
microsoft/MegaDetector-Overhead Wildlife detection in aerial and drone imagery
microsoft/MegaDetector-Sonar Sonar-based wildlife detection for aquatic monitoring
microsoft/MegaDetector-Classifier Camera-trap species classification fine-tuning — adapt classifiers to your own datasets and geographic regions
microsoft/SPARROW This repo — solar-powered edge AI for wildlife monitoring
SPARROW Studio Desktop application for all AI for Good Lab models