Diana was sadly sick this week, so we did not complete this assignment all together, but we actually did do this during last week's group assignment!
I technically did this week's assignment as part of testing my PCB from week 6, but I will elaborate more on it here. If you recall, my vending machine needs to know whether or not the user inserted a coin. To do this, I will use a phototransistor to sense how much light has been allowed to shine on it. For now, I am using this PCB, and the following code:
When I covered the phototransistor with my fingers, it indeed showed me in the serial monitor that no light above the threshold was detected. When I removed my fingers, it went back to telling me that it could detect light above the threshold.
I experimented with the sensor a little bit. Just covering it with something as thin as a tissue was not enough to register a change, at least at this current threshold. I debated working a bit more on figuring out the suitable threshold for my project, but that would be better to do later when my vending machine is at least partially built, so I can choose a more accurate value.