Problem Statement: Our laundry machine is located in the basement and my roommates often have to check multiple times to see when their laundry is done.

Goal: Create a device that notifies my roommates when their laundry is done.

Process:

I decided to use a microphone that would detect the washer/dryer buzzer. An accelerometer seemed like an equally valid option, but we had done a tutorial with the mic on Sunday so I went in that direction.

The code I started with is below, which I took from our Sunday tutorial. You can also see my circuit's early stages.