Fridge Temperature Final Assignment ENGR 103 - Carter Ferrazzano

For my project, I decided to measure the temperature of my mini fridge for 24 hours. To do this, I used a thermistor sensor, connected to my ESP32 board with Arduino. I had my laptop sitting outside of the fridge while the cord connected to the ESP32 led from my computer into the fridge. I ended up finding that my mini fridge’s temperature varies by a few degrees (F), and changes quite often. The overall average ended up being 30 degrees Fahrenheit. The minimum ended up being 26.34 degrees. The maximum was 70.61 degrees, this is because I had to start the execution of the code before I could put the sensor into the fridge, so it picked up a few seconds of the room’s temperature. With the numbers that this experiment gave me, I have learned that my fridge actually runs a little bit colder than the average fridge, which according to many different sources, is about 35-38 degrees. My thought for why this is is possibly because there is also a small freezer in the fridge, letting even colder air into the rest of the fridge. Also, the first 40ish minutes or so it looks like the thermistor was still cooling down to the actual temperature of the fridge. The fridge was opened at about the 15 minute mark, which is most likely why it got warmer. After this point, the fridge's temperature fluctuated by a few degrees, but stayed roughly between 26-32 degrees fahrenheit.

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Artifacts

Name Description
Excel Data Sheet w/ Graph This has the data from the experiment. This also includes a graph of the data.   Download
Fridge_Temperature_Final_Assignment This is the code that I used to run the thermistor sensor, collect the data, calculate the temperature, and display the results.   Download
Fridge Temperature 6 Minute Video This is a 6ish minute video showing the program running, the environment it was run in, how the code works, my results and graph, and a quick overall view of the project. (Also, I made an error, when I said it will print 0, I meant it will print nothing. I also forgot to show specifically which pins the thermistor and resistor were plugged into, although theses are in the pictures above).   Link