The buzzer on a washer or dryer may be OK for most people, but what if you would like something a little more versatile to tell you when your laundry is done? Here’s an interesting solution involving an Arduino Yún that sends a text message when the washer or dryer is done.
Rather than hacking into your equipment, this device simply uses a dual-axis accelerometer to sense when a washer or dryer is no longer vibrating, thus not spinning. It’s powered by a 5 volt DC inverter, but a battery pack can also keep things running. Optionally, you can print a case for the Yún, and the source code for this project is available here.
This device is envisioned for use with laundry, but I could see something similar being used for many other applications. If you wanted to track whether a car was moving or not, this should be able to be done with no modification. With a little more work, it should even be able to glean something’s acceleration. I suppose the big question would be whether or not there was WiFi available, which could be a problem in a moving car!