alcohol sensor (it's working!)

Built a voltage-regulation circuit that was shown here (seems like this layout is uncommon, as other resources seem to agree on using a circuit with a 10uF and a 1uF capacitor. I already ordered a 1000uF shown here, so I'll go with this). Seems to work like a charm. I connected it to the alcohol sensor circuit using a 9V battery as input, but it still did not seem to work:

Output voltage was constant @ ~5V. Expected behavior is 5V = maximum alcohol level.

After some thought, I just decided to try wiring the alcohol sensor circuit again. I was almost sure I had the wiring right before, but once I connected it after the re-wiring, output voltage started dropping:

Voltage dropping. As stated in the previous post, the sensor requires a 24-48 hour calibration time (to reach 0V state)

Two key functionalities are now usable. Time to start putting them together.

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