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The DFRobot Romeo is an all-in-one Arduino-compatible robot control board that combines an ATmega328 microcontroller (Arduino Uno bootloader) with a built-in 2× 2 A DC motor driver and integrated wireless module socket. It eliminates the need for a separate motor shield, letting you start building a robot straight away.

The board features DFRobot's standard 3-pin Gravity sensor interface, making hundreds of Gravity-compatible sensors and actuators plug-and-play. Dedicated servo connectors with additional power capacity are included for projects that require high-current servo motors. An integrated socket accepts APC220 RF or Bluetooth communication modules for wireless control.

Key Features

  • ATmega328 Microcontroller – Arduino Uno compatible with standard pin mapping
  • Built-In Motor Driver – 2-channel DC motor driver, 2 A maximum per channel
  • Wireless Module Socket – Accepts APC220 RF or DFRobot Bluetooth modules
  • Gravity Sensor Interface – Standard 3-pin connectors for plug-and-play sensors
  • Servo Connectors – Dedicated headers with extra power capacity
  • 5 Key Inputs – On-board buttons for user input
  • 3× I²C Interfaces – Including two 90° pin headers
  • ICSP Header – For direct programming
  • Auto Power Switching – USB or external DC (7–12 V) with automatic sensing

Specifications

  • Microcontroller – ATmega328 (Arduino Uno bootloader)
  • Power Input – USB or 7–12 V DC external
  • Power Output – 5 V, 3.3 V, and external power pass-through
  • Analogue I/O – 8 channels, 10-bit resolution
  • Motor Driver – 2 channels, 2 A max per channel
  • Serial Interface – TTL level
  • Dimensions – 90 × 80 × 14 mm
  • Weight – 60 g

Ideal For

  • Arduino-based robot projects
  • Wireless-controlled vehicles
  • Gravity sensor experimentation
  • STEM robotics education

Package Contents

  • 1× Romeo All-in-One Controller

Resources

The Romeo - The First Arduino Robot Control Board appears in the following collections:

SKU DF-DFR0004