The conversation between human and AI assistant.
How do I make a bluetooth device that set an alarm when our phone out of the bluetooth device range?
That sounds perfect. Can you suggest a device to use for the alarm?
You have two options, you can either buy a pre-built device or make one on your own. If you choose to buy, you can look for Bluetooth trackers or smart alarms that have the feature of alerting you when the phone is out of range. If you want to make one on your own, you can use an Arduino or Raspberry Pi board, a Bluetooth module, and a buzzer to make a basic prototype.