J5t - Piccies.
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J5t - down and in it's driving position.

J5t - raised and ready to fire.

A greyscale printed on a foil backed piece of paper and a light sensor provide the positioning information.

9 different directional commands using a light sensor and some grey printed blocks.

Flip the up lever, J5t is armed. Flick the switch J5t fires, and drops back to it's driving position.

the levers that work the switches.