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ARC Modules and Add-ons

Modular Communication Backpacks

ARC supports a range of modular communication add-ons—known as "backpacks"—which connect directly to the GPIO header on the back of the device. These modules enable powerful wireless and proximity features while maintaining a portable, upgradeable design.

Supported Modules

  • LoRa (SX1276):
    Enables long-range, low-power communication for IoT and custom radio networks. Perfect for off-grid messaging, telemetry, and mesh networking experiments.

  • RF (CC1101, NRF24):
    Allows versatile sub-GHz (315/433/868/915 MHz) and 2.4 GHz wireless operations for device control, signal analysis, and penetration testing.

  • NFC (PN532):
    Offers support for NFC reading/writing, MIFARE Classic/Ultralight, and peer-to-peer applications. Ideal for access control projects and RFID research.

  • IR (Infrared):
    For learning, sending, and emulating IR remote control signals—great for smart home and AV automation.

Expansion Port Details

  • Connector: Standard 2.54mm GPIO header on ARC's back side.
  • Interfaces:
    • UART
    • I2C
    • SPI
  • Power: 5V and GND pins are available for module power.
  • Mounting:
    Modules are designed to stack securely like a backpack, with custom or off-the-shelf PCBs.

Key Features

  • Hot-swappable: Attach or detach modules without opening the main enclosure.
  • Auto-detection: ARC’s software can detect and initialize supported modules at boot or on demand.
  • Open architecture: Supports both official and DIY add-ons, with full access to communication buses and power rails.

Tip: Example wiring diagrams and supported backpack pinouts are available in the Schematics section.

  • more coming soon! *