Hi, I am a newbie and decided to make an app after watching several tutorials.
I wanted to make an app which would start recording whenever the noise in the surrounding crosses a certain threshold. The components I used were Arduino Uno board, Bluetooth HC-05, Sound sensing module.
Whenever I open the app, it shows me the following message (attached).
This is the code, and the interface components I used.
Please tell me what I’m doing wrong, and if any other mistake you can point out?