How to Use BTS7960: Examples, Pinouts, and Specs

The BTS7960 is a high-current H-bridge motor driver designed for driving DC motors and other inductive loads. Manufactured by ARDUINO with the part ID UNO, this component is ideal for applications requiring precise motor control, such as robotics, automation, and industrial systems. Its robust design includes built-in protection features like overcurrent, overtemperature, and undervoltage safeguards, ensuring reliable operation in demanding environments.

• Robotics (e.g., motorized arms, wheeled robots)
• Industrial automation systems
• Electric vehicles and carts
• Conveyor belts and other motorized machinery
• DIY motor control projects

The BTS7960 is a versatile motor driver with the following key specifications:

The BTS7960 module typically includes the following pins:

To use the BTS7960 with an Arduino UNO, follow these steps:

1. Connect the VCC pin of the BTS7960 to the 5V pin on the Arduino.
2. Connect the GND pin of the BTS7960 to the GND pin on the Arduino.
3. Connect the RPWM and LPWM pins to two PWM-capable pins on the Arduino (e.g., pins 9 and 10).
4. Connect the R_EN and L_EN pins to two digital pins on the Arduino (e.g., pins 7 and 8).
5. Connect the motor terminals to the Motor A and Motor B outputs of the BTS7960.
6. Connect the motor power supply to the +V Motor and -V Motor pins.

Below is an example Arduino sketch to control a DC motor using the BTS7960:

// Define pins for BTS7960 connections
#define RPWM 9    // PWM pin for forward rotation
#define LPWM 10   // PWM pin for reverse rotation
#define R_EN 7    // Enable pin for right half-bridge
#define L_EN 8    // Enable pin for left half-bridge

void setup() {
  // Set pin modes
  pinMode(RPWM, OUTPUT);
  pinMode(LPWM, OUTPUT);
  pinMode(R_EN, OUTPUT);
  pinMode(L_EN, OUTPUT);

  // Enable both sides of the H-bridge
  digitalWrite(R_EN, HIGH);
  digitalWrite(L_EN, HIGH);
}

void loop() {
  // Rotate motor forward at 50% speed
  analogWrite(RPWM, 128); // 50% duty cycle
  analogWrite(LPWM, 0);   // No reverse rotation
  delay(2000);            // Run for 2 seconds

  // Stop the motor
  analogWrite(RPWM, 0);
  analogWrite(LPWM, 0);
  delay(1000);            // Pause for 1 second

  // Rotate motor backward at 75% speed
  analogWrite(RPWM, 0);   // No forward rotation
  analogWrite(LPWM, 192); // 75% duty cycle
  delay(2000);            // Run for 2 seconds

  // Stop the motor
  analogWrite(RPWM, 0);
  analogWrite(LPWM, 0);
  delay(1000);            // Pause for 1 second
}

• Ensure the motor power supply voltage is within the range of 6V–27V.
• Use appropriate heat sinks or cooling mechanisms if operating at high currents for extended periods.
• Avoid connecting the motor directly to the Arduino; always use the BTS7960 to handle high currents.
• Double-check all connections before powering the circuit to prevent damage to the components.

1. Motor does not rotate:

   • Verify that the R_EN and L_EN pins are set HIGH.
   • Check the PWM signals on the RPWM and LPWM pins.
   • Ensure the motor power supply is connected and within the specified voltage range.

2. Motor rotates in the wrong direction:

   • Swap the connections of the motor terminals (Motor A and Motor B).
   • Verify the logic levels on the RPWM and LPWM pins.

3. Overheating of the BTS7960 module:

   • Ensure proper ventilation or attach a heat sink to the module.
   • Reduce the motor load or operating current.

4. Arduino resets when the motor starts:

   • Use a separate power supply for the motor and the Arduino.
   • Add a capacitor across the motor power supply to reduce voltage spikes.

Q: Can the BTS7960 drive stepper motors?
A: No, the BTS7960 is designed for DC motors and other inductive loads. For stepper motors, use a dedicated stepper motor driver.

Q: What is the maximum PWM frequency supported?
A: The BTS7960 supports PWM frequencies up to 25 kHz.

Q: Can I use the BTS7960 with a 3.3V microcontroller?
A: Yes, the logic inputs are compatible with both 3.3V and 5V systems.

Q: How do I measure motor current using the IS pin?
A: The IS pin provides an analog voltage proportional to the motor current. Use an ADC pin on the Arduino to read this value and calculate the current.

By following this documentation, you can effectively integrate the BTS7960 into your motor control projects.