Hi guys, i want to know if there is a oxygen sensor for arduino uno.
Google shows some, here is one:
http://www.robotshop.com/en/grove-o-gas-sensor.html
Read analog output that represents the O2 level.
Thank you so much sir.
CO2Meter.com sells a good one that measures up to 25%. It's pretty easy to integrate to an Arduino. They've worked out that they're selling a lot of sensors to Arduino people so they've started putting more Arduino code in their examples.
Getting more than 25% usually requires an electrochemical sensor (basically a fuel-air battery) that is consumed over time and requires calibration.