Final Addendum: So my professor and I finally figured out what the problem was. The variable that was meant to store incoming serial data wasn't initialized and so that was causing an error which was what caused the program to not work. So we gave the variable an initial value of 0 and now the ...

Another Addendum: Scratch the part in the first addendum about the serial data being able to change because it's actually just stuck at -1. I think this happened after I changed the code to be closer to how my professor wrote.

Addendum: Should've mentioned this in the original post, but at some point I added a call to the "serialEvent" function at the start of the "draw" function, and it seemed to have at least got the program closer to how it's supposed to function. The circle and text appeared and they would change ...

I have to test out a program written in p5js that uses the "p5.serialport.js" library, the "p5.serialControl" program, and an ESP32-S3 with a potentiometer connected to it. What was supposed to happen with the program was that a ball was supposed to change in size depending on what value the ...