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LRA Motor (DA7820)

LRA Motor (DA7820)

SKU:AX22-0039

This AX22-sized module integrates the LD0825BC linear resonant actuator (LRA) with a DA7820 haptic driver on a compact 22 × 22 mm PCB. The DA7820 is designed for LRAs and automatically handles resonance tracking at 240 Hz, ensuring strong and consistent tactile feedback with minimal code. It drives the motor with a 1.2 Vrms AC signal and up to 90 mA while protecting it with kick-start and braking control. The module also includes Stemma QT connectors for quick I²C integration and chainable connections. Works with  Arduino IDE, MicroPython, or MicroBlocks.
$7.49
$7.49
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Technical details

  • 22 mm × 22 mm square
  • 4× ⌀2.7 mm Mounting Holes
  • Rated Frequency: 240 Hz ±10 Hz
  • Vibration Acceleration: ≥ 0.70 Grms
  • 3.3 V, 5.0 V
  • Arduino IDE Compatible
  • MicroPython Compatible
  • MicroBlocks Compatible
Component datasheet

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Pinout & connections

Pinout & connections

Technical Resources

LRA Motor (DA7820) - (AX22-0039)
Circuit Schematic 3D Model
PCB FRONT
LRA Motor (DA7820) — PCB FRONT
PCB BACK
LRA Motor (DA7820) — PCB BACK

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Arduino example

ax22-0039.ino 
#include <Wire.h>
#include "Haptic_Driver.h" //Sparkfun Qwiic Haptic Driver DA7280

Haptic_Driver hapDrive;

void setup() {
  Wire.begin();
  hapDrive.begin();
  hapDrive.defaultMotor();
  hapDrive.enableFreqTrack(true);
  hapDrive.setOperationMode(DRO_MODE);
  hapDrive.clearIrq(hapDrive.getIrqEvent());
}

void loop() {
  hapDrive.setVibrate(127);
  delay(120);
  hapDrive.setVibrate(0);
  delay(50);

  delay(500);
}