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Topic: voltage in Arduino MKRZero  (Read 955 times) previous topic - next topic

weal5300

Warning: Unlike most Arduino & Genuino boards, the MKRZero runs at 3.3V. The maximum voltage that the I/O pins can tolerate is 3.3V. Applying voltages higher than 3.3V to any I/O pin could damage the board.
Does anyone understand that?

If MKRZero runs at 3.3V And in case Applying voltages higher than 3.3V to any I/O pin could damage the board. in this case Why there is a pin (VIN)5V?it's work as only output voltage, right? .and damage is caused by input voltages by other input devices? please answer me!

MartinL

Hi weal5300,

The 5V output can be useful for powering external breakout boards or shields that require this voltage.

It's necessary to protect the MKRZero's inputs from 5V by using a 5V to 3.3V level shifter, such as the one shown here: https://www.adafruit.com/product/757.

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