MIDAS is an Android app that turns your phone into a wireless Bluetooth mouse for any PC or laptop that supports Bluetooth HID. No receiver dongle, no Wi-Fi, no third-party server — it works entirely over standard Bluetooth Low Energy (BLE), presenting itself to your computer the same way a hardware mouse would.
It supports two input modes — a classic touchpad and an air-mouse gyroscope mode — along with a full set of tunable settings.
| Feature | Details |
|---|---|
| Touchpad mode | Glide a single finger to move the cursor |
| Gyroscope mode | Tilt the phone to move the cursor (air-mouse) |
| Two-finger scroll | Pinch two fingers on the touchpad to scroll |
| Scrollbar strip | Drag the right-edge strip to scroll in both modes |
| Tap to click | Single tap → left click (toggleable) |
| Long press right click | Hold to trigger right click (toggleable) |
| Hold left click | Press and hold the LEFT CLICK button for text-selection drag |
| Keyboard | Slide up the keyboard panel to type (toggleable) |
| Feature | Details |
|---|---|
| BLE HID | Phone acts as a standard Bluetooth HID peripheral |
| Auto-reconnect | Directed advertising prompts the PC to reconnect after disconnect |
| Keep-alive | Zero mouse report sent every 3 s to prevent BLE radio power-down |
| Wake lock | Foreground service holds a partial wake lock to prevent CPU/Doze throttling |
| Feature | Details |
|---|---|
| Dynamic color | Follows your wallpaper accent on Android 12+ |
| Theme modes | System / Light / Dark |
| Sensitivity | Low / Medium / High |
| Haptic feedback | Tactile response on clicks (toggleable) |
| Persistent settings | All preferences survive restarts |
- Phone: Android 9 (API 28) or newer
- PC / Laptop: Any device with Bluetooth that supports HID over GATT (Windows 10/11, macOS, Linux all work)
- Permissions: Bluetooth, Bluetooth Scan, Bluetooth Connect, Bluetooth Advertise
- Open MIDAS on your phone.
- Tap "Make Discoverable" — the phone starts advertising itself as a Bluetooth HID device.
- On your PC, open Bluetooth & devices → Add device → Bluetooth.
- Select MIDAS from the list and complete the pairing.
- Once paired, the status pill at the top of the app turns green — you're connected.
If the connection drops (screen timeout, app backgrounded, etc.):
- Tap the status pill or "Reconnect" prompt in the app — it sends directed advertising to your already-paired PC, which causes Windows to reconnect automatically within a few seconds.
- You do not need to re-pair or open Bluetooth settings on the PC.
- Move cursor — glide one finger anywhere on the touchpad surface.
- Left click — single tap (if Tap to Click is on), or press the LEFT CLICK button.
- Right click — long press on the surface (if Long Press Right Click is on), or press the RIGHT CLICK button.
- Scroll — drag two fingers up/down, or drag the scrollbar strip on the right edge.
- Text selection drag — hold the LEFT CLICK button while moving your finger on the touchpad.
- Move cursor — tilt the phone in the direction you want the cursor to go.
- Left / Right click — tap the respective button at the bottom.
- Scroll — drag the scrollbar strip on the right edge.
- Tap to click / Long press — tap or long-press the gesture zone (same settings as touchpad mode apply).
Open the settings sheet by tapping the ⚙ icon. Available options:
| Setting | Description |
|---|---|
| Theme | System / Light / Dark |
| Input Mode | Touchpad / Gyroscope |
| Sensitivity | Cursor speed (Low / Medium / High) |
| Tap to Click | Single tap on surface = left click |
| Long Press Right Click | Hold on surface = right click |
| Haptic Feedback | Vibration on click events |
| Keyboard | Show/hide the keyboard panel |
-
Clone the repo:
git clone https://github.com/itz-mune/midas.git cd midas -
Open in Android Studio (Ladybug or newer recommended).
-
Let Gradle sync finish, then Run on a physical device (BLE HID requires real hardware — emulators won't work).
Note: A release build requires a signing keystore. Set the
KEYSTORE_PATH,STORE_PASSWORD, andKEY_PASSWORDenvironment variables, or use the default debug build for testing.
MIDAS uses Bluetooth Low Energy GATT to register the phone as a HID peripheral:
- A
BluetoothGattServerexposes the standard HID Service with a Mouse Report characteristic. BluetoothLeAdvertiserbroadcasts the phone as connectable so the PC can discover and bond with it.- Once connected, mouse movement, button state, and scroll are encoded as 4-byte HID reports and sent via GATT notifications.
- A foreground
Service+PARTIAL_WAKE_LOCKkeep the BLE stack alive when the screen is off. - A 3-second keep-alive (zero report) prevents the BLE radio from entering power-save mode and dropping the link.
- Language: Kotlin
- UI: Jetpack Compose + Material 3
- Architecture: MVVM (
AndroidViewModel+StateFlow) - BLE: Android
BluetoothGattServer/BluetoothLeAdvertiser - Sensors:
TYPE_GYROSCOPEviaSensorManager(gyro mode) - Persistence:
SharedPreferences(settings)
MIT License — see LICENSE for details.