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Create own Membrane Matrix Keypad (and hooking it up to the Arduino)

Step 4Mapping out your Cheap "Circuit"

Mapping out your Cheap \"Circuit\"
What we are going to be doing is gluing on foil to make a flexible, cheap, however effective circuit board. What we need to do now is on our computer mock up we need to make how our columns and rows are going to be set-up. If you are using Photoshop make 2 new layers, one called rows the other columns. if you're just using paint make a copy of the file called rows and another columns.

On these new layers we will put large black lines where we want our "Circuits" to go. See image 2 for rows and image 3 columns if you are confused. Image 4 shows what both layers turned on looks like. Starting to look familiar?
Now you need to flip one of your images vertically... or is it horizontally... see image 5 you'll get what I mean.

Go ahead and print these out for the next step.

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