How it works

Pairing

The main circuit connects to a leg circuit using Bluetooth. To pair it both circuits must have the same group ID (stock is 31458762).

Step counting

When both circuits are enabled, on button A press leg circuit gets the signal to start counting steps on every shake detected. When timer stops, it sends the result to the main circuit, where we multiply it by 2 (because we have 2 legs (if you don't you just need to divide the final step count by 2)).