1. Introduction to the Fishtank

2. DISCLAIMER & USAGE
The content of this presentation is for informational purposes only and is intended for students attending Louisiana Tech University only.
The authors of this information do not make any claims as to the validity or accuracy of the information or methods presented.
Any procedures demonstrated here are potentially dangerous and could result in damage and injury.
Louisiana Tech University, its officers, employees, agents and volunteers, are not liable or responsible for any injuries, illness, damage or losses which may result from your using the materials or ideas, or from your performing the experiments or procedures depicted in this presentation.
The Living with the Lab logos should remain attached to each slide, and the work should be attributed to Louisiana Tech University.
If you do not agree, then please do not view this content.
boosting application-focused learning through student ownership of learning platforms

3. ENGR 121 Fishtank Project Construct a working “fishtank”
Arduino microcontroller is used to measure and control the temperature and salinity of a small volume of water
Involves fabrication, circuitry, programming, and system control
Project Assessments:
Temperature Control Check
Conductivity Control Check/Final System Testing
Fishtank Group Presentation

4. Fabrication
A wooden platform onto which individual components are attached
A small reservoir containing salt water with a target salinity
Fresh water and salty water reservoirs
A waterproofed thermistor for sensing temperature
A conductivity sensor

5. Non-fabricated Components
An Arduino microcontroller
Two solenoid valves
A resistive heating element
Transistor / relay circuits to power the solenoid valves and heater
A centrifugal pump
An external power supply to power the system

6. System Overview The system will:
Turn heater on when temperature is below a certain value
Turn heater off when temperature is above a certain value
Add salty water when salinity is below a certain value
Add deionized water when salinity is above a certain value
The result of fabrication, assembly, calibration, and programming activities is an autonomous system that senses and controls salinity and temperature.
HEATER