We are coming down to the wire! For the past two days we have worked on our research paper, lesson plan, and techFest activity. Not much to report in terms of our control systems. Although, Vardhman was able to produce a graph using Mondays- Tuesday 24 hr data collection (below).
I had posted the data table below two days ago but it accompanies the graph, so here you go!
We are making progress on our research paper. Lesson plan has been turned in for audit--will be done by the end of the day. TechFest idea and supply list has been completed.
Vardhman gave us a quick workshop over the relay change he's made to sensor circuitry. Basically he isolated pH from DO to get a more accurate reading for each of the probes. Interference, leading to incorrect readings, was the BIG problem. A schematic of this change is shown below:
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