I have bought your Groove oxygen sensor v1.1 and directly coupled it to an
Arduino. When in normal air; I get 13.6% oxygen (1.3V). Do you have any
idea why this can be? I’m running a 5V arduino, powered the sensor via the
Arduino and set VRefer to 5.
Second question; I have not connected the NC wire; what is this used for?
Hi there,1. please try below code. <LINK_TEXT text=“https://github.com/SeeedDocument/Grove_ … _value.zip”>https://github.com/SeeedDocument/Grove_Gas_Sensor_O2/raw/master/resources/Read_O2_value.zip</LINK_TEXT> 2.NC stands for not connected. So just leave it not connect.