Useful Geek Tees: Raspberry Pi 3 GPIO Reference

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A GPIO reference is what a Raspberry Pi 3 project builder will need when wiring sensors to the Raspberry Pi 3 board.

Get this T-Shirt if you are a Raspberry Pi 3 project builder. You can hang it up when you are building your project and wear it when you are not.

Want that cute Raspberry Pi 3 project builder to notice you? Get this to get his/her attention.

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