Romeo BLE - Arduino Robot Control Board with Bluetooth 4.0

The Romeo BLE is an all-in-one Arduino-compatible robot control board from DFRobot with integrated Bluetooth 4.0. It combines an ATmega328P microcontroller, a dual-channel DC motor driver (2 A max), and a TI CC2540 BLE chip in a single board — letting you build and wirelessly control robots without additional motor driver shields.

Thanks to Bluetooth 4.0, the Romeo BLE supports wireless sketch uploading (via a Bluno Link adapter), smartphone control, Bluetooth HID, iBeacons, and AT command configuration. It's compatible with the DFRobot Gravity sensor ecosystem and standard Arduino shields.

Key Features

• Integrated Motor Driver – Dual H-bridge, 2 A max current
• Bluetooth 4.0 (BLE) – TI CC2540, 70 m range in free space
• Wireless Sketch Upload – Update code over Bluetooth (requires Bluno Link adapter)
• Gravity Compatible – Standard 3-pin interface for plug-and-play sensors
• Arduino Shield Compatible – Standard Arduino UNO form factor headers
• 5 Programmable Buttons – Built-in for user input
• APC220 Socket – Integrated socket for RF module

Specifications

• Microcontroller – ATmega328P (Arduino UNO bootloader)
• BLE Chip – TI CC2540
• Digital I/O – 14 pins (6 PWM: pins 3, 5, 6, 9, 10, 11)
• Analogue Inputs – 8 × 10-bit ADC
• I2C – 3 ports
• Motor Driver – Dual H-bridge, 2 A max
• Power Input – USB or DC 2.1 mm barrel jack, 5–23 V (auto-sensing)
• DC Output – 5 V / 3.3 V
• Dimensions – 94 × 80 mm (3.70 × 3.15″)

BLE Features

• Bluetooth HID support
• iBeacon support
• AT command configuration
• Transparent serial communication
• Master/slave mode switching
• USB firmware update for BLE chip

Ideal For

• Mobile robot platforms
• Bluetooth-controlled robotics projects
• Arduino-based robot builds requiring integrated motor control
• STEM education and classroom robotics

Package Contents

• 1× Romeo BLE (Arduino-compatible ATmega328P)

Resources

• Product Wiki
• Schematic (PDF)