Water Glass With Makey Makey

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Introduction: Water Glass With Makey Makey

In this guide you will learn how to create a water activated relay. This is an example of turning the physical world into the digital world.


Makey Makey Kit, Thin Nail, Copper Wire, 8oz Plastic Cup, Tape, Water, (optional) LED’s

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Step 1: Cup Setup

  1. Start by using a sharp pointed finish nail to poke holes through the top of your plastic cup. You will need 4 holes. Look at the image below for the location of the holes needed.The holes should be no more than a 1/8 inch apart.
  2. Insert coper wire

Step 2: Connect Your Makey Makey


  1. Earth
  2. MS ↑

(See image below)

Optional Connection:

  1. MS OUT
  2. Earth

(see image below)

Add a group of led’s behind the cup to indicate when the water hits the wire.

Note: You can find LED’s in flashlights at a dollar store.

Step 3: Scratch

Click on the link below to start the water glass

Makey Makey Water Glass

Note: Adjust the speed on the mouse pointer to slow or speed up the water flow for your project.

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