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BMI Air Mouse

Brief

"You can turn anything into an air mouse if you're brave enough"

— Piper, a.k.a. Pez

Naturally, the quote above applies to Flipper as well.

What?

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:

See early prototype in action.

How?

Hardware

The custom module is using Bosch BMI160 accelerometer/gyroscope chip connected via I2C.

Note: in fact, some other IMU chips are also supported. It's detected via the first found I2C Address.

ChipExpected I2C Address
BMI1600x69
LSM6DS30x6A
LSM6DSO0x6B

Take a look into the schematic folder for Gerber, BOM and CPL files, so you can order directly from JLCPCB.

Original idea:

What I thought it would look like

Expectation:

What EDA though it would look like

Reality:

What it looks like

Software

The code is based on the original Bosch driver and an orientation tracking implementation from the Google Cardboard project

License

TL;DR: Use the code however you want, give credit where it's due, no warranty of any kind is provided.