DFRobot DFR0351 Romeo BLE Mini Arduino Robot Control Board with Bluetooth 4.0

The Romeo BLE mini is a simplified version of the Romeo board. It inherits all the functions of the Romeo BLE. Moreover, it's smaller.

It has 8 digital pins, 4 analogue pins and integrates Bluetooth 4.0 wireless communication function. It can easily drive a mobile platform using two 1.2A H-bridged motor drivers to meet the needs of small scale robots. The Romeo BLE mini will prove to be a very good assistant to Makers. You can also check out the Bluetooth micro-controller selection guide to get more information.

Version update: V2.0 has an upgraded motor driver IC. It replaces the HR8833 with a TB6612 motor driver chip. The TB6612 has the same control logic as the L298 motor driver and the code is compatible with the Romeo robot control board. It also has 2 interrupt pins now, so you can connect encoders to make a PID motor control.

* Features: * Supports Gravity 3-pin interface, colour-coded, compatible with servos and Gravity sensors & modules * Supports external power supply automatic switch, can simultaneously use USB and external power supply * Supports wireless download program / wireless communication function * Supports mobile phone APP control * Two-way H-bridged Motor Driver * Support servo external power input * Supports AT commands to configure BLE * Supports serial transmission * Supports master and slave switch

* Specification: * BLE chip: TI CC2540 * Transmission distance: 30m (open area) * Microprocessor: ATmega328P * Board selection: Arduino UNO * Flash: 32 KB (ATmega328P) of which 0.5KB used by boot-loader * SRAM2: KB (ATmega328P) * EEPROM: 1KB (ATmega328P) * Clock frequency: 16MHz * 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 * microUSB connector 2x 2A H-bridge motor driver * Size: 45 x 38.5mm