May 13, 2018
Presentation Slides
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Presentation Slides
Proof of concept video showing the PH sensor reacting to contaminated water and the LED lighting up. The LED doesn’t light up when the sensor comes into contact with clean water.
Arduino code I tried to adapt. I found sample code attached to the webpage I bought the PH sensor from. I tried to incorporate the LED output but had difficulties. I’m sure with more time it would prove to be successful.
Arduino set up with connected PH sensor and red LED as the output. The LED flashes when the water is contaminated, if it doesn’t flash then the water is safe to drink. I had some issues with coding the Arduino and adapting the code to utilise an LED instead of a screen.
Development sketches for the placement of the bladder in the jacket. It can’t go on the back as it would get in the way of the user’s tramping pack. Also includes a sketch of the bladder design which incorporates two compartments, the water filter linking them and the connected electronic device for water testing.
Material experiment: I placed a cotton bud in the spout opening of the funnel. It caught most of the charcoal powder particles which previously would have made it through. The water ran through a lot more quickly as well, which I believe was due to the charcoal not clogging together in front of the spout. More of the water filtered through clean as well. The lower righthand photo is of the cotton bud at the end of the process.
Presentation Slides of progress and model design.
Experiment Outcomes with 3D Printed Model
I had very little success incorporating my design into the filtration process. Mostly I found that the water just would not filter through and I tried multiple times, changing minute details to see if it would work but I had almost no luck. The one time the water did begin to filter through clear it took 10 minutes for a couple of drops to come through which was not an acceptable outcome in my opinion. I tried only using the carbon powder and not the granules, taking out the filter paper, changing the ends of the model with prints that had larger holes. Nothing really seemed to work.
My model obviously needs more development, unfortunately, I have run out of time to do that before the presentation tomorrow.