How to Use FIT0774 Vibration motor: Examples, Pinouts, and Specs

The FIT0774 is a compact and lightweight vibration motor manufactured by DFRobot. This electromechanical device converts electrical energy into mechanical vibrations. When powered, it produces a rapid motion in a back-and-forth motion or sometimes in a circular motion, depending on the design. It is commonly used in applications such as mobile phones, game controllers, and wearable devices to provide haptic feedback to the user.

• Mobile phones and tablets for silent notifications and haptic feedback
• Wearable devices for alerts and notifications
• Game controllers to enhance user experience
• Medical devices for tactile feedback
• Robotics for sensory feedback and alerts

• Operating Voltage: 3.0V - 4.2V
• Rated Current: 75mA (max)
• Starting Voltage: 2.3V (min)
• Operating Temperature: -10°C to +60°C
• Rated Speed: 9000 rpm ± 2500 rpm at 3.0V
• Body Dimensions: 10mm x 2.7mm
• Wire Length: 90mm
• Weight: 1.8g

1. Power Connection: Connect the positive pin of the FIT0774 to a digital output pin on your microcontroller (e.g., Arduino UNO) and the negative pin to the ground (GND).

2. Driving the Motor: To activate the motor, set the digital output pin to HIGH. To stop the vibrations, set the pin to LOW.

3. PWM Control (Optional): For varying the intensity of the vibrations, use a PWM signal. The duty cycle of the PWM will determine the strength of the vibrations.

• Do not exceed the maximum rated voltage and current, as this may damage the motor.
• Ensure that the motor is securely mounted to prevent any unwanted movement.
• Consider using a transistor or a motor driver if the current exceeds the microcontroller's output capacity.
• Use a flyback diode if you are driving the motor with a transistor to protect against voltage spikes.

// Define the pin connected to the vibration motor
const int motorPin = 3; // PWM pin for intensity control

void setup() {
  pinMode(motorPin, OUTPUT);
}

void loop() {
  // Turn on the vibration motor at full intensity
  analogWrite(motorPin, 255); // Set PWM to maximum
  delay(1000); // Vibrate for 1 second

  // Turn off the vibration motor
  analogWrite(motorPin, 0); // Set PWM to zero (off)
  delay(1000); // Pause for 1 second

  // Vibrate the motor at half intensity
  analogWrite(motorPin, 127); // Set PWM to half (50% duty cycle)
  delay(1000); // Vibrate for 1 second

  // Turn off the motor
  analogWrite(motorPin, 0); // Set PWM to zero (off)
  delay(1000); // Pause for 1 second
}

• Motor not vibrating: Check the connections and ensure the power supply is within the operating voltage range.
• Weak vibrations: Ensure the power supply is adequate and the PWM signal is set correctly if used.
• Motor overheating: Avoid running the motor continuously at high voltages or currents beyond the rated specifications.

• Double-check wiring and connections for any loose ends or incorrect polarity.
• Use a multimeter to verify the voltage at the motor's terminals.
• If using PWM, ensure the code is correctly implemented and the correct pin is being used.
• Consider adding a heat sink or cooling mechanism if overheating occurs during prolonged use.

Q: Can I run the FIT0774 directly from an Arduino pin? A: Yes, but ensure that the current draw is within the limits of the Arduino pin (typically 40mA).

Q: How can I adjust the vibration strength? A: Use PWM to control the intensity of the vibrations by varying the duty cycle.

Q: Is it necessary to use a flyback diode with this motor? A: It is good practice to use a flyback diode when driving inductive loads like motors to protect against inductive voltage spikes, especially when using a transistor or relay.

Q: Can the FIT0774 be powered by a battery? A: Yes, as long as the battery can provide the appropriate voltage and current within the operating specifications of the motor.