I tried bath duck again but failed again 🙁
It doesn’t work to make leds on and off with ir sensor in water…
So I developed another method.
http://vimeo.com/moogaloop.swf?clip_id=2281610&server=vimeo.com&show_title=1&show_byline=1&show_portrait=0&color=&fullscreen=1
Mechanical test from Hsiang Ju Hung on Vimeo.
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