Hi, I am doing a project to detect breath odor for children (compare before brushing teeth and after) and give interactive feedback based on the sensor data. I am using 4 sensors:TGS2600, TGS2602, TGS2620 and DHT22
I am using base code in this example and follow the schematic connection. Attached photo is the result from the arduino serial monitor.
I am wondering what does the value represent??? And do give some comment whether is it relevant to use those sensor listed above...Any expert here...I need your help please...Thank you.
