Sometimes I forget things. In particular, I forget to transfer my clean but wet laundry from the washing machine to the dryer. When this happens, I have to waste time, detergent, electricity, and water to re-wash the clothes. My wife’s sister has an expensive race-car-red washing machine that plays a few cheerful musical notes when the cycle is finished. That reminder is helpful, and my better half likes the little tune, but I figured I could get crafty and make the dumb old washer and dryer whisper in my ear through the internet. Here’s how I did it.
I especially dig the simple solution for attaching the accelerometer sensor to the machine:
Strong enough to stay attached and yet easy enough to remove when needed.
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Adafruit LIS3DH Triple-Axis Accelerometer (+-2g/4g/8g/16g): This sensor communicates over I2C or SPI (our library code supports both) so you can share it with a bunch of other sensors on the same I2C bus. There’s an address selection pin so you can have two accelerometers share an I2C bus. Read more.
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