Final Project Journal

My project idea is a small device that helps beginner fish owners take care of their fish by

- Measures water temperature.

-Measures the turbidity of water.

My project is inspired by:

1. Aquarium Enthusiasts:

   • Many aquarium owners struggle to maintain optimal water conditions manually. so my device automates this process, making it easier for both hobbyists and professionals.

2. Environmental Monitoring Systems:

   • Similar systems are used in large-scale environmental monitoring (e.g., lakes, rivers, and oceans) to track water quality. My project brings this technology to a smaller, more accessible scale.

Software

For leaser Part

I started drawing sketches for each side, starting with the bottom, then I started drawing the other sides and making sure that each sketch I drew was fully defined. 

After making sure that all the sketches were fully defined, I started extruding them 3mm to match the thickness of the wood sheets. 

For 3d Part

After I extruded the sketches, I had the elements of the project, so i grounded the bottom so it would be easy to connect the rest of the elements and electronics to it, then I started connecting the elements and electronics to it so that the shape of the project gradually began to appear. 

For laser cuter

For 3d printing

I set layer height 0.1 for high quality.

Because the piece was small and the contact surface area was large and because of its shape I did not need any Suppotr and made the Infill 20%

INPUT :

 -Temperature sensor : to measure temperature

 -Turbidity sensor : to measure turbidity

Action components

  -LCD :  Display sensors measurements 

 -Buzzer : Alarm when turbidity level rises 

 -LED : Lights up when the temperature rises or falls 

Circuit and connection

Then I connected the LED and the buzzer, connected the negative to the negative, and before connecting the negative of the LED, I connected a resistor so that it would not burn out, and I connected the positive pin of each of them to a different pin on the Arduino.

Then I connected the temperature sensor, connected the negative and positive terminals to the negative and positive terminals on the board, then I connected the middle pin to the Arduino A1 pin

The appropriate power source for my project is 5V because all my components do not need more than that, and the most important reason is that I will operate the Arduino via the power source by connecting Vin pin, and if I connect it to more than 5V it will burn out.

Device Test

The first problem I faced was drawing the hanger. I didn’t know where to start, so I got help from my Instructor , Ahmed Khaled. He suggested that instead of trying to draw it in a new sketch like I was doing, I should draw it directly on the back. He helped me start drawing it, and I completed the rest.

The second problem was when I wanted to pass the sensor wire through the hanger. The wire size was suitable, but its tip wasn’t, so I thought of unscrewing it, passing the wire through, and then reassembling it. The idea worked (I got some help from Dina in reassembling it again 😅)

I faced another problem when connecting the circuit on Fritzing. I did not find all the components at first, so I asked for help. My friends suggested that I search for the name of the component and then type Fritzing. Indeed, I found the component.

Another problem is that when cutting the base for the first time, the nail holes were not strong enough, so they broke. I solved the problem by adding 3m on each side of the square.