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Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Isn't beer wonderful?

I've thought about making an electrostatic "ROM" electrophorus by printing the information in conductive ink (or just draw it very heavily in pencil) on a sheet of paper and having a dielectric cake between that and a sensing grid of wires above the cake. The cake would be charged electrostatically just like any other electrophorus and the wires above it could sense the charge of a filled in area.
 

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