How to use KE-25 oxygen sensor
In this video I will show you how I use oxygen sensor KE-25. I'll try to use arduino.
Because the signal is so small so I need to amplify the sensor signal first and then read by arduino.
I made a mistake while editing this video. The amplification should 101 times, and the feedback resistor used is 100K not 10k. So the resistor are 100k and 1k.
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Full tutorial and sketch :
https://miliohm.com/how-to-use-ke-25-...
Timestamps :
00:00 - Sensor Overview
01:25 - Measure sensor output
01:43 - Sensor Amplifier
03:25 - Arduino Code
04:10 - Sensor test
