f06dof - Wireless Accelerometer+Gyro OSC
Recently I built a bunch of really cheap and simple wireless sensor circuits that send Open Sound Control messages. It is just two modules next to each other powered from two AA batteries.
The sensor module is the MPU-6050 with 3D accelerometer and gyroscope. The microcontroller is an ESP8266-01. Total cost per unit is around €4,50 (excluding batteries).
There are a few settings like smoothing, update rate and thresholds which can be controlled by sending OSC messages to the ESP module. See the examples.
Attached below are examples for SuperCollider and MaxMSPJitter, schematics and the firmware (PlatformIO).