Hi Giulio, @giuliomoro, I am writing to ask about an issue about digital pin state. I hooked up a simple digital in/out circuit for the example in the library. Basically it triggers a tone once the button is pressed and the led blinks. It was all fine and worked as expected. But, when I was setting up another wiring, I heard a buzz and the connection broke. When I plug Bela back and test the example project, I found that the digital pin states are reversed( the tone and the led is by default on and once push the button the tone and the led disappears). Also, the Bela mini becomes very noise after that sudden disconnection. I'm thinking it might be an issue of a short circuit when I was wiring. Do you what the issue might be? (I was trying to upload a video but I couldn't).

    Keyi I found that the digital pin states are reversed( the tone and the led is by default on and once push the button the tone and the led disappears

    This sounds like a wiring issue. I recommend disconnecting everything and going back to the basics starting over from the bare minimum example of the button and led

    • Keyi replied to this.

        giuliomoro Hi Giulio, Thank you for the reply. As I am wiring up, I notice that the led has a very dim light even it it not plugged into the 3.3v.
        Also have an error launching the bela io. It says: Error: EIO: i/o error, stat '/root/Bela/IDE/public/index.html'

            Keyi Error: EIO: i/o error, stat '/root/Bela/IDE/public/index.html'

            This looks like a corrupted SD card, or perhaps an unstable power supply. Try rebooting?

            Keyi As I am wiring up, I notice that the led has a very dim light even it it not plugged into the 3.3v.

            You need to provide a bit more details there. It may be expected behaviour depending on the wiring.