BLE GATT characteristic parsing

[Anibal_de_la_Torre]

Hello
In this thread I am looking for help. It is a similar problem to the one raised here.
Any help will be welcome.

Reading BLE service in Appinventor

Hello I am using some programs that send data from a board, data through BLE, using their services, in the style of these: https://os.mbed.com/teams/mbed-os-examples/code/mbed-os-example-ble-HeartRate/ I am trying to read that data using this AppInventor program https://appinventor.mit.edu/explore/blogs/karen/2016/08/heart.html I manage to connect to the board using the mobile Bluetooth. In App inventor I have updated service_UUID and characteristic_UUID. However I can't read the data. I …

Thank you so much for everything.