[nRF UART v2.0]

A note for future users of the Bluetooth Low Energy TinyShield (ST). The tutorial demonstrates using nRF UART v2.0. The Android app does not appear to be current and fails. Fortunately, I did suceed with nRF Toolbox and its Universal Asynchronous Receiver/Transmitter (UART) function.  To use, select the funtion, press All when the scanner starts, select BlueNRG, et voilà!

General Discoverable Mode.
Connected to device:79-42-45-07-1A-48
12 : Hello, world

I also tried Serial Bluetooth Terminal, but it returns a message Connection failed: no write characteristic (4/16).

HTH
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dnl