NetBurner Community Forum

Hi,

I have a question regarding the Netburner’s MOD5270 GPIO. I made one of the digital I/O pin to be an input, but I can see a voltage of 3.3V at the pin. Is there way that I don’t see any voltage on the pin if it set as input.

Please help me with this issue.

Thanks.

Best regards,
Nagesh Polu

Hello mate,

what you should do is to wire the input pin to a signal... 1 or 0... or any value between 0 and 5 volts if you are using the analog inputs...

greets

GPIO pins have a weak pull-up to +3.3V. Adding your own pull-down resistor will bring the floating voltage to almost zero. 1 kOhm is a good value.
Regularly, you don't need such a pull-down, due to the driver of your signal source is strong enough to overkome the on-chip weak pull-up.

nageshpolu wrote:I have a question regarding the Netburner’s MOD5270 GPIO. I made one of the digital I/O pin to be an input, but I can see a voltage of 3.3V at the pin. Is there way that I don’t see any voltage on the pin if it set as input.