What I want to do
Try Mat Lippincott's idea: use the nicely-standardized electrodes on the end of an audio jack:
as conductivity probes in order to assess the conductivity of water (an important water quality measurement).
My attempt and results
NOTE: I somehow goofed up when uploading the video, so I've got about 30 seconds of silence at the beginning :) Here's a direct link to where the video actually begins:
- Another note on the video: I seem to have referred to pretty much every piece of metal in the set up as a 'jack'. Will proceed to refer to everyone I meet today as Jack. And I plan to solicit comments on the above video from Jack Summers.
Questions and next steps
- Need to find a nice way of measuring out known amounts of salt. Cheap microgram scale?
- Set up a basic 555 timer conductivity measurement circuit using an audio jack.