The app allows you to turn your Flipper into a USB or Bluetooth air mouse (you do need an extra module, see the Hardware section below)...
Using it is really simple:
- Connect the Flipper via a USB cable and pick USB, or pick Bluetooth and pair it with your PC;
- Hold the Flipper in your hand with the buttons pointing towards the screen;
- Wave your Flipper like you don't care to move the cursor;
- Up button for Left mouse click;
- Down button for Right mouse click;
- Center button for Middle mouse click;
- Left and Right buttons for scrolling;
- Use calibration menu option if you notice significant drift (place your Flipper onto a level surface, make sure it doesn't move, run this option, wait 2 seconds, done).
The custom module is using Bosch BMI160 accelerometer/gyroscope chip connected via I2C.
Take a look into the schematic folder for Gerber, BOM and CPL files, so you can order directly from JLCPCB.
The code is based on the original Bosch driver and an orientation tracking implementation from the Google Cardboard project
TL;DR: Use the code however you want, give credit where it's due, no warranty of any kind is provided.