Tell us about yourself!
I decided to use a smaller Arduino to keep things compact. I had this nano laying around catching dust so it was a perfect fit.I had fun building it, thanks for the great instructable! :) Feel free to add it to the gallery.
Doesn't the click from the relay provide an audible notification, before the bubble notification?If this is the case, you can simply swap the AC pump for a DC one and the relay for a transistor.
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