Non responsive pins on IoT Cloud

Official Hardware Nano Family Nano 33 IoT
2

Hi

I kept trying to use my Nano Arduino 33 IoT with the IoT Cloud. I'm sharing with you my results :

  • You can control most of the pins of the cards, except 3 : pin 14, pin 18 and 19 (their voltage seems to remain on some value, lower than 3V3, higher than 2V). Maybe it comes from the special roles of theses pins (pin 14 -> DAC0, pin 17 and 18 -> SDA and SCL)

  • I wasn't using a correct method for reading the potentiometer. You just need to add "potentiometer = analogRead(pin)" inside the loop for updating a value in the dashboard. The "OnChange" functions allow you to transmit a variable from the cloud to the card, but not the other way.

  • the most common variable names are forbidden. You need to be a bit inventive by choosing the name of the variables (you cannot use PIN_LED, PIN_LED_13, switch, for example)

I hope this may help someone else.