Kalin Dimitrov / Mbed 2 deprecated BC127_Melody_mbed_Echo_App Featured

A simple mbed demo app for the BC127 Bluetooth Audio and Data module.

Dependencies:   mbed

BC127 Melody mbed Echo App

This is a demo application for the BC127 module available from BlueCreation and and the mbed. You will need an mbed, a BC127, and a phone that support Bluetooth and SPP and has the Melody application installed. The Melody app is available on the Play Store here:

The BC127 and mbed

Connecting BC127 to mbed

BC127 Pinmbed Pin
1 - GNDGND
33 - VDDVout
34 - VDDVout
41 - TXp9
42 - RXp10

Connect and power the BC127 module according to the Manual and Data sheet. Connect Power, Gnd, and connect TX on the module to Pin 9 on the mbed and Rx to pin 10. Also connect ground from the module to the mbed.

  1. Compile and load the BC127 Melody mbed Echo App.
  2. Reset the mbed to load the app.
  3. Reset or power up the BC127.
    • You will see LED1 on the mbed light up.
    • The BC127 is now discoverable.
  4. List Find BC127 using your phone and pair to it.
    • The device name will be of the type BlueCreation-XXXXXX.
  5. Open the Melody application and connect to the BC127.
    • LED2 on the mbed should light up in addition to LED1. You are now connected!
    • When LED3 lights up the mbed has configured the BC127.
  6. Follow the instructions you just received in the Melody app!

Note: If you reset the BC127 you will need to reset the mbed to enable it to connect and configure the BC127. If you just disconnect and reconnect the phone, you will be sent back the SPP open indicator event coming from the BC127.