Control of two DC motors connections:

• VMS: Module voltage
• GND: Ground
• MA1: Positive end for motor A
• MA2: Negative end for motor A
• MB1: Positive end for motor B
• MB2: Negative end for motor B
• PWMA: Speed control signal for motor A – This pin is connected to pin 10 of Arduino
• PWMB: Speed control signal for motor B – This pin is connected to pin 11 of Arduino
• ENA: Control signal for motor A – If HIGH, motor is in direct mode and if LOW, motor is rotating in reverse. This pin is connected to pin 12 of Arduino
• ENB: Control signal for motor B – If HIGH, motor is in direct mode and if LOW, motor is rotating in reverse. This pin is connected to pin 13 of Arduino

Buzzer for make sound:

• BUZ: Buzzer pin – This pin is connected to pin 4 of Arduino

Connection for control servo motor:

• SER: PWM pin for control servo motor – This pin is connected to pin 9 of Arduino

Bluetooth connections:

• BT2: Bluetooth Pins including +(3.3V) pins, (GND), RX (connected to D0) and TX (connected to D1)

Ultrasonic sensor connection:

• ULT: connection pins to ultrasonic sensor including +(5V), (GND), Return (connected to D9) and Trigger (connected to D8)

RBG LED connection:

• RGB: RGB: For connection to RGB LED including pins B (connected to D6), G (connected to D5) and R (connected to D3)

Other connections:

• A/D: Analog and digital pins A0 to A5 for sensor and module use
• D2: Digital pin 2 for sensor and module use
• RS: Reset pin
• GND: Ground
• VCC: Board power supply – 3V, 5V

You can see the pinout of this module in the image below.