For the temperature sensor the base will be made out of wood and will be 5in by 4.5in and 21in. 5 inches allows for the arduino and breadboard to sit on top and 21in is long enough to reach the ala wai from the doc while short enough that the arduino can still be connected to the computer. At the end of the board will be another box but it will be hollow and hold the motor inside. Connected to the motor will be the reel that hold the sensor cord and extends and retracts the sensor to allow it to reach different depths. The reel will be 3D printed and 2in wide. The two circles at the end to keep the sensor on the reel will be 3 in in width to hold it while it is all wrapped up. It will also be able to connect to the motor to make it turn. The hollow box that holds the motor will be 5in by 3in to match up with the block and make the total length of the prototype 2 ft long. To support the motor the box will be drilled into the board and the motor then drilled into the box.
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The turbidity sensor will be a box that is able to be held by the two poles sticking out from the sides of the box and have a pole sticking out of another side with a hole in it to allow water flow into another smaller box that will primarily hold just the ala wai water being tested. We brainstormed about how we were going to stop and receive water flow. To do this we thought that we’d add a door that has magnetic sides that way when we first put it into the water and the water flow is strong it can be pushed open but when it is out of the water and there is none or little water flow it closes automatically without any assistance. Another variable that we thought about was controlling the light that is used, for this we thought that it’d be best to use an external light source that is inside the box but outside of the smaller water box. Then on the other side of the water box is where the sensor would be to measure the amount of light passing through. There would also be another separate compartment for wires, the arruino, and breadboard so that those things stay dry and can be connected to the computer. With all of the separate boxes and compartment, all of the sensors and non water proof things will stay dry. The material of the inner water box will be made out of clear glass or plastic that has little to no reflection. We are still brainstorming how to have it visually show the turbidity level but were thinking about using an led. For the temperature sensor we came up with a simpler design. It will be a long board that will have the arduino and the breadboard. At the end of the board will be a hollow box that will hold the motor for the gear. The gear will hold wire that is attached to the temperature sensor like a fishing reel so that it can extend to different lengths. This design will allow the non water proof things to stay dry and have it meet the necessary requirements.
Turbidity sensor:
Temperature sensor
The next problem that we face is finding a solution to the many things that are making the ala wai such an unsanitary place and the other complications that surround the ala wai. The main problem that my group is trying to solve is the turbidity and temperature of the water. |
AuthorI am a ninth grade student at iolani currently in robotics 1 ArchivesCategories |