├── .gitattributes
└── Code
    └── Code.ino


/.gitattributes:
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1 | # Auto detect text files and perform LF normalization
2 | * text=auto
3 | 


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/Code/Code.ino:
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  1 | #include <bluefruit.h>
  2 | #include "LSM6DS3.h"
  3 | #include "Wire.h"
  4 | 
  5 | // Create IMU instance
  6 | LSM6DS3 myIMU(I2C_MODE, 0x6A);  // I2C address 0x6A
  7 | 
  8 | // BLE HID and Device Info
  9 | BLEHidAdafruit blehid;
 10 | BLEDis bledis;
 11 | 
 12 | // Define pins
 13 | const int LEFT_CLICK_PIN = D1;
 14 | const int LED_PIN = LED_BUILTIN;  // Use correct built-in LED pin
 15 | bool lastClickState = false;
 16 | 
 17 | void setup() {
 18 |   Serial.begin(115200);
 19 |   unsigned long startTime = millis();
 20 |   while (!Serial && (millis() - startTime < 3000))
 21 |     ;  // Wait up to 3s
 22 | 
 23 |   pinMode(LEFT_CLICK_PIN, INPUT_PULLUP);
 24 |   pinMode(LED_PIN, OUTPUT);
 25 |   digitalWrite(LED_PIN, LOW);  // Start OFF
 26 | 
 27 |   // Initialize IMU
 28 |   if (myIMU.begin() != 0) {
 29 |     Serial.println("LSM6DS3 not detected!");
 30 |     while (1)
 31 |       ;
 32 |   }
 33 | 
 34 |   Serial.println("LSM6DS3 ready");
 35 | 
 36 |   // Init BLE
 37 |   Bluefruit.begin();
 38 |   Bluefruit.setTxPower(4);
 39 |   Bluefruit.setName("XIAO AirMouse");
 40 | 
 41 |   blehid.begin();
 42 |   bledis.setManufacturer("Seeed Studio");
 43 |   bledis.setModel("XIAO BLE Mouse");
 44 |   bledis.begin();
 45 | 
 46 |   Bluefruit.Advertising.addFlags(BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE);
 47 |   Bluefruit.Advertising.addTxPower();
 48 |   Bluefruit.Advertising.addAppearance(BLE_APPEARANCE_HID_MOUSE);
 49 |   Bluefruit.Advertising.addService(blehid);
 50 |   Bluefruit.ScanResponse.addName();
 51 |   Bluefruit.Advertising.start();
 52 | 
 53 |   Serial.println("BLE ready. Connect your computer to XIAO AirMouse.");
 54 | }
 55 | 
 56 | void loop() {
 57 |   // Turn LED ON if connected, OFF otherwise
 58 |   if (Bluefruit.connected()) {
 59 |     digitalWrite(LED_PIN, HIGH);  // May need LOW for some boards
 60 |   } else {
 61 |     digitalWrite(LED_PIN, LOW);
 62 |     delay(100);
 63 |     return;
 64 |   }
 65 | 
 66 |   // Read gyroscope values
 67 |   float gx = myIMU.readFloatGyroX();
 68 |   float gy = myIMU.readFloatGyroY();
 69 |   float gz = myIMU.readFloatGyroZ();
 70 | /*
 71 |   Serial.print("X - ");
 72 |   Serial.println(gx);
 73 |   Serial.print("Y - ");
 74 |   Serial.println(gy);
 75 |   Serial.print("Z - ");
 76 |   Serial.println(gz);
 77 | */
 78 |   // Setting Speed of Cursor ( 2 - Higher Speed : 10 - Slower Speed)
 79 |   float vx = -gz / 5.0;
 80 |   float vy = gy / 5.0;
 81 | 
 82 |   // Filtering Micromovements
 83 |   if (abs(vx) > 0.5 || abs(vy) > 0.5) {
 84 |     int8_t dx = (int8_t)vx;
 85 |     int8_t dy = (int8_t)vy;
 86 |     blehid.mouseMove(dx, dy);
 87 |   }
 88 | 
 89 |   // Handle left click
 90 |   bool clickPressed = digitalRead(LEFT_CLICK_PIN) == LOW;
 91 |   if (clickPressed != lastClickState) {
 92 |     if (clickPressed) {
 93 |       blehid.mouseButtonPress(MOUSE_BUTTON_LEFT);
 94 |     } else {
 95 |       blehid.mouseButtonRelease();
 96 |     }
 97 |     lastClickState = clickPressed;
 98 |   }
 99 | 
100 |   delay(10);
101 | }


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