bluetoothbluetooth-lowenergyhm-10

HM-10 BLE module automatic reconnect

I have an HM-10 BLE (v549 firmware) module with a PIN set. I want my phone to connect to it automatically. Is this possible with BLE modules?

The first time it is discovered, I click on it and, after entering the PIN, they are connected (as indicated by the LED that stopped blinking). Then if I turn off either the module or my phone's bluetooth and I turn them on again, nothing happens. The phone does not connect to the module, even if I click on it. I have to unpair from my device and repeat the process for a connection to be established.

How can I setup the HM-10 so that my phone will automatically connect to it whenever it is within range?

Thank you.

Solution

  • Android Bluetooth settings don't provide the option of making connection with auto connect feature. By default auto connect parameter is false. So what you can do is download the nrf connect app. App provides a feature of connect with autoConnecct.

    Note: AutoConnect have few limitations: