Product details

Romeo BLE Quad

Robot Control Boards and Computing Components

DFRobot

Romeo BLE Quad

About this product

A discontinued STM32-based Arduino-compatible robot controller with four DC-motor channels, encoder interfaces, Bluetooth 4.0 and separate sensor I/O. It supports wireless programming and closed-loop robot motor-control projects. Manufacturer retirement is explicit; this record documents historical hardware.

Model
Romeo BLE Quad DFR0398
Category
Robot Control Boards and Computing Components, Components
Product stage
Discontinued

Specifications & evidence

Source-backed claims. Configuration, workload and evidence type matter when comparing products.

Analog i/o pins

5 pins

Manufacturer specification

Configuration: DFR0398-retired; Manufacturer specification; no independent measurement.

Romeo BLE Quad - A STM32 Robot Controller Board with Quad DC Motor Driver & Bluetooth 4.0 - DFRobot
Analog I/O Pins: 5

Bluetooth chip

TI CC2540; Bluetooth 4.0

Manufacturer specification

Configuration: DFR0398-retired; Manufacturer specification; no independent measurement.

Romeo BLE Quad - A STM32 Robot Controller Board with Quad DC Motor Driver & Bluetooth 4.0 - DFRobot
Bluetooth Chip: TI CC2540 (Bluetooth 4.0)

Board dimensions

67 × 42 mm

Manufacturer specification

Configuration: DFR0398-retired; Manufacturer specification; no independent measurement.

Romeo BLE Quad - A STM32 Robot Controller Board with Quad DC Motor Driver & Bluetooth 4.0 - DFRobot
Size: 67 x 42 (mm)

Clock frequency

72 MHz

Manufacturer specification

Configuration: DFR0398-retired; Manufacturer specification; no independent measurement.

Romeo BLE Quad - A STM32 Robot Controller Board with Quad DC Motor Driver & Bluetooth 4.0 - DFRobot
Clock Speed: 72 MHZ

Dc motor channels

4 channels

Manufacturer specification

Configuration: DFR0398-retired; Manufacturer specification; no independent measurement.

Romeo BLE Quad - A STM32 Robot Controller Board with Quad DC Motor Driver & Bluetooth 4.0 - DFRobot
DC Motor: 4 way

Digital i/o pins

10 pins

Manufacturer specification

Configuration: DFR0398-retired; Manufacturer specification; no independent measurement.

Romeo BLE Quad - A STM32 Robot Controller Board with Quad DC Motor Driver & Bluetooth 4.0 - DFRobot
Digital I/O Pins: 10

Encoder interfaces

Four-way motor driver with encoder interfaces

Manufacturer specification

Configuration: DFR0398-retired; Manufacturer specification; no independent measurement.

Romeo BLE Quad - A STM32 Robot Controller Board with Quad DC Motor Driver & Bluetooth 4.0 - DFRobot
Beyond this, it also includes a 4-way DC motor driver and encoder interfaces.

External supply range

7–10 V DC

Manufacturer specification

Configuration: DFR0398-retired; Manufacturer specification; no independent measurement.

Romeo BLE Quad - A STM32 Robot Controller Board with Quad DC Motor Driver & Bluetooth 4.0 - DFRobot
DC Supply: USB Powered or External 7V~10V DC

Flash published claim

512K; customizable allocation

Manufacturer specification

Configuration: DFR0398-retired; Source prints K without an explicit byte unit; allocation details are configurable.

Romeo BLE Quad - A STM32 Robot Controller Board with Quad DC Motor Driver & Bluetooth 4.0 - DFRobot
Flash: 512K (Customizable Flash assignment, refer to Flash chapter for more info)

I2c default pins

SDA 30; SCL 29

Manufacturer specification

Configuration: DFR0398-retired; Manufacturer specification; no independent measurement.

Romeo BLE Quad - A STM32 Robot Controller Board with Quad DC Motor Driver & Bluetooth 4.0 - DFRobot
I2C/IWC: 30 (Default SDA), 29 (Default SCL)

Mass

54 g

Manufacturer specification

Configuration: DFR0398-retired; Manufacturer specification; no independent measurement.

Romeo BLE Quad - A STM32 Robot Controller Board with Quad DC Motor Driver & Bluetooth 4.0 - DFRobot
Weight: 54g

Microcontroller

STM32 F103RET6

Manufacturer specification

Configuration: DFR0398-retired; Manufacturer specification; no independent measurement.

Romeo BLE Quad - A STM32 Robot Controller Board with Quad DC Motor Driver & Bluetooth 4.0 - DFRobot
Microcontroller: STM32 F103RET6

Operating voltage

3.3 V

Manufacturer specification

Configuration: DFR0398-retired; Manufacturer specification; no independent measurement.

Romeo BLE Quad - A STM32 Robot Controller Board with Quad DC Motor Driver & Bluetooth 4.0 - DFRobot
Operating Voltage: 3.3V

Radio range

30 m

Manufacturer specification

Configuration: DFR0398-retired; Manufacturer specification; no independent measurement.

Romeo BLE Quad - A STM32 Robot Controller Board with Quad DC Motor Driver & Bluetooth 4.0 - DFRobot
Communication Range: 30m

Serial1 pins

RX1 0; TX1 1

Manufacturer specification

Configuration: DFR0398-retired; Manufacturer specification; no independent measurement.

Romeo BLE Quad - A STM32 Robot Controller Board with Quad DC Motor Driver & Bluetooth 4.0 - DFRobot
Serial1 0 (Rx1) and 1 (Tx1)

Serial3 pins

RX3 30; TX3 29

Manufacturer specification

Configuration: DFR0398-retired; Manufacturer specification; no independent measurement.

Romeo BLE Quad - A STM32 Robot Controller Board with Quad DC Motor Driver & Bluetooth 4.0 - DFRobot
Serial3 30 (Rx3), and 29 (Tx3)

Serial ports

2 ports

Manufacturer specification

Configuration: DFR0398-retired; Manufacturer specification; no independent measurement.

Romeo BLE Quad - A STM32 Robot Controller Board with Quad DC Motor Driver & Bluetooth 4.0 - DFRobot
Serial Port: 2 (Serial1, Serial3)

Sram published claim

64k

Manufacturer specification

Configuration: DFR0398-retired; Source prints k without an explicit byte unit. Retained as text rather than inventing a unit.

Romeo BLE Quad - A STM32 Robot Controller Board with Quad DC Motor Driver & Bluetooth 4.0 - DFRobot
SRAM: 64k

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