DIGITAL INPUTS PROPER USAGE

[jathanas]

Hi, i have two simple questions about the proper usage of the digital input of Controllino mini powered with a 12V DC power supply.

1) If i want to use the digital input of A0 on the screw terminal i just connect the 12V of the power supply straight to the A0 on the screw terminal in series with a switch but without a protection or a pulldown resistor.

2) If i want to use the digital input of A0 on the pin header i just connect the 5V of the pinheader straight to the A0 pin on the pinheader in series with a switch but without a protection or a pulldown resistor.

Are those two simple connections considered proper usage of the controllino?

[mr-controllino]

Hello,

Yes, this is correct!

The internal voltage divider is already puling the input down. So, there is no need for an external pulldown.

regards

Marco