Romeo ATmega328P BLE Motor Control Board

SKU: DFR0351

Romeo BLE mini is a simplified version of Romeo board. It inherits all functions of Romeo BLE. Moreover, IT GOT A SMALLER SIZE\! Yes, you got it all. It has 8 Digital pins, 4 analog pins and integrates Bluetooth 4.0 wireless communication function. And it can easy to drive the mobile platform using two 1.2A H-bridged Motor Driver to meet the needs of small scale robots. We hope Romeo BLE mini will be a good assistant to Makers.

Detail of Arduino motor shield with colored terminals and connectors-DFRobot product sku:DFR0351 image.
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  • Tech Specs
  • Specification

    Parameter Details
    BLE chip TI CC2540
    Transmission distance 30m (open area)
    Microprocessor ATmega328P
    Board selection Arduino UNO
    Flash 32 KB (ATmega328P) of which 0.5 KB used by bootloader
    SRAM 2 KB (ATmega328P)
    EEPROM 1 KB (ATmega328P)
    Clock Frequency 16 MHz
    Digital I/O Pins 8
    PWM Digital I/O Pins 4 (D3, D9, D10, D11)
    Analog Input Pins 4
    Output current 1.2A single-channel continuous drive current
    Start / Peak Current 2A (continuous pulse) / 3.2A (single pulse)
    Motor Drive Pins D4, D5, D6, D7
    Interface microUSB interface
    Motor Driver 2x2A H-bridge motor driver
    Size 45x38.5mm

    Pinout

    DFR0351 Small Control Board Board Overview
    Label Name Description
    1 +VIN- Servo & Motor power input 6.5~10v
    2 +Servo- Digital port power input 5~12V
    3 M1 & M2 Terminals 2-Way Motor Controller:
    Motor 1 : PIN4 (Direction), PIN5 (PWM Speed)
    Motor 2 : PIN7 (Direction), PIN6 (PWM Speed)
    4 I2C I2C interface (A4 & A5)
    5 A 5V GND Gravity Analog Interface: A0, A1, A2, A3
    6 D VCC GND Gravity Digital Interface: D2, D3, D8, D9, D10, D11, D12, D13;
    7 LED light PWR-power indicator
    TX/RX-Data transmissing/receiving indicator
    L-D13 led * LINK-Bluetooth link indicator
    PAIR-Bluetooth pair indicator
    8 RESET ATmega328P Reset button
    9 BOOT Used for update BLE Firmware

    FAQ

    • Hi, Can I use a stepper motor (12V) and use both external power inputs (9V Vin and 12V Servo+-)? I mean is the servo+- power input connected to the motor output?? Thank you.

      HI, we haven't try it with stepper motor driving, but since it comes with 2-way motor driver, it should work. I found a tutorial based on L298N, hope it will help you. Anyway, Motor power port could support motor driving. Servo power port is for the huge current for GPIO side

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