Here's my project page for my laundry notification sensor: https://hackaday.io/project/10614-laundresp

It was a lot of fun to make. I'm currently trying to learn how to use Eagle so I can design a very simple PCB that will accept a micro USB, convert 5v to 3V, and include a couple traces for the LDR.

I plan to get a small board made, and make this a more permanent fixture on the washing machine.