Saves history of bluetooth connections made between your android device and peripherals within it's range. This applet appends 'Connected' events to the spreadsheet. Consider enabling also 'Log bluetooth dis-connections...' applet to store more complete information.
If
Connects to a Bluetooth device
This Trigger fires every time your Android device connects to a Bluetooth device.
Then
Add row to spreadsheet
This action will add a single row to the bottom of the first worksheet of a spreadsheet you specify. Note: a new spreadsheet is created after 2000 rows.
Explore more great ways to automate Android Device and Google Sheets