Category Archives: Electricity

Tapetricity Sensor

Using file cards and aluminum tape, you can make a sensor board that will be able to tell between different cards. By using individual cards, you can provide input to a light output board for a simple quiz game. You … Continue reading

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You can experiment with electricity with just a few supplies, and some simple processes. By building your circuits on file cards, it is pretty easy to try out circuit ideas and see for yourself how they work. Continue reading

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Paintable Circuits with Bare Conductive

At World Maker Faire, I finally got to see paintable circuits in action. Matt Johnson spoke with me about the conductive paint that people were using and showed me a few projects that demonstrate the possibilities. The business cards they brought were printed with a swath of conductive paint suitable for home experimenting. I awarded them one of my Editor’s Choice Blue Ribbons. It’s exciting how this opens up a great area in education for arts, electronics, and physical programming.

Bare Conductive grew out of the founders’ graduate studies at the Innovation Design Engineering Course at the Royal College of Art and Imperial College, London. The version of their conductive paints they had at Maker Faire is similar to the skin paint featured in a music video of a few years back. Continue reading

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Vinyl PCB Mask

By using a vinyl sticker added to a copper clad circuit board, you can make Printed Circuit Boards (PCBs). The vinyl prevents the ferric chloride from contacting the copper on the board in the areas you want to preserve. When your circuit board is etched, you can add electric components to build a circuit.

To have the vinyl cut, you need to use a sign cutting machine. These are common in Fab Labs, and many makerspaces. You may also be able to convince your local sign shop to cut a sticker for you. Continue reading

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