Here is an image of the plan:

Basically, the jackets starts all black and open.
When you close it with a magnet, it closes the circuit with a Reed Switch, making parts change color to purple.

I am still waiting for the inks to come in the mail, but once they are here there will be more pictures of the actual project. =)

And I finally got the ink to go clear without burning the fabric, it worked best with a 6 Volt battery at 500 mA and no resistor.

Here is a video:

Thermochromic Display from chouza on Vimeo.

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