IoT learner 0 level

Results 2 issues of IoT learner 0 level

Hello! This applies to a waveshare ble400 board connected to a nrf51822. I am trying to send some string from nrfConnect utility via ble. i've started from the test.ino sketch...

On windows 10/64 bit, rtl-sdr device appears as #1 device#0 is actually bogus. but the software tries to open #0 which fails.