Published © GPL3+

DIY $0 Water Trackpad

A ridiculously low cost sensor to compute the x-coordinate of right index fingertip on a water surface.

BeginnerFull instructions provided5 minutes3,996
DIY $0 Water Trackpad

Things used in this project

Hardware components

Arduino UNO
Arduino UNO
×1
9V battery (generic)
9V battery (generic)
×1
aluminum foil
kitchen aluminum foil
×1
plastic container
rectangle-base or square-base container
×1
bare copper wire
non-insulated copper wire
×1

Software apps and online services

Arduino IDE
Arduino IDE

Story

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Schematics

DIY Water Touchpad circuit schematic - 1

DIY Water Touchpad circuit schematic - 2

Arduino Uno pinout

Arduino Uno pinout

Code

diy_water_touchpad.ino

Arduino
No preview (download only).

Credits

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