I was wondering if anyone has done any experimenting with these. I was curious about how they work. I don't think it would be as simple as just giving it a voltage to power it, and getting some level back as a percentage of O2. I'm wondering if you need to pulse each of the two LED circuits, and then I'm assuming that there are individual sensors for the amount of light received. Then it would be software to figure out what it all means.
Maybe this is too complicated for this group, I don't know. If someone has a better idea of where to look, that would be appreciated as well.