Embedded Files
Alpha Prototype
Alpha Prototype
New Design (as of Phase IV)
New Design (as of Phase IV)
The new device will be consist of a calcium ion selective sensor inserted into a t-joint pipe under a household sink. The sensor will be connected to an Arduino uno and Arduino nano in order to connect through bluetooth to a raspberry pie that will upload the sensor data onto a user controlled app.
Hardware
Hardware
Sensor Adaptor
Electronics Box
The electronic housing box and lid are printed with PLA and took approximately five hours to print. The t-joint adapter is printed with PLA as well and took approximately 30 minutes to print. The t-joint adapter was fitted to create a watertight seal against the pipe and is fitting with a rubber insert to create a watertight seal with the sensor.
Alpha Prototype Testing
Alpha Prototype Testing
High Calibration Solution
High Calibration Solution
As part of the sensor calibration process the sensor must be fully submerged in the high concentration (1000 ppm) calcium calibration solution. This is the graphical output in mV of this process.
Low Calibration Solution
Low Calibration Solution
As part of the sensor calibration process the sensor must be fully submerged in the low concentration (10 ppm) calcium calibration solution. This is the graphical output in mV of this process.
Tap Water
Tap Water
After the calibration process, the sensor was tested with tap water from a Hoboken apartment. Due to the calibration process completed fairly consistent results can be seen. In order to improve the sensor readings, more calibration solutions can be created and implemented to improve the accuracy of the sensor.
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