Build a Portable Step Counter using ATtiny85 and MPU6050
In this tutorial, we are going to build an easy and cheap Pedometer using ATtiny85 IC, MPU6050 Accelerometer & Gyroscope, and OLED Display Module. This simple Arduino based step counter is powered by a 3V coin cell, making it easy to carry when you go out for a walk or jog. It also requires very few components to build and the code is also relatively simple. The program in this project uses the MPU6050 to measure the magnitude of the acceleration along the 3 axis (X, Y, and Z).
[original story: Circuit Digest]