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A.K.A. a tongue-zapping retainer. This project is highly nascent, but the idea is to build a dental retainer, on the bottom of which is an electrode array. If one holds one's tongue to the roof of the mouth, it will press against this electrode array and one can feel the patterns of electrical stimulation.
A.K.A. a tongue-zapping retainer. This project is highly nascent, but the idea is to build a dental retainer, on the bottom of which is an electrode array. If one holds one's tongue to the roof of the mouth, it will press against this electrode array and one can feel the patterns of electrical stimulation.


==Physical Design==
==Pysical Design==


The armature will be made with a non-toxic molding plastic fitted to a user's mouth. This same mold needs to fit over a lead-free printed circuit board. On the top of the board, completely  enclosed and sealed from the mouth, are a number of wafer-thin shift registers. On the bottom of the printed circuit board, exposed to the mouth, is an array of electrodes. The power supply and logic control is external to the mouth, and connected to this retainer by the thinnest possible wire, which would extrude from the corner of the mouth.
The armature will be made with a non-toxic molding plastic fitted to a user's mouth. This same mold needs to fit over a lead-free printed circuit board. On the top of the board, completely  enclosed and sealed from the mouth, are a number of wafer-thin shift registers. On the bottom of the printed circuit board is an array of electrodes. The power supply and logic control is external to the mouth, and connected to this retainer by the thinnest possible wire, which would extrude from the corner of the mouth.


===Component Sourcing===
===Component Sourcing===
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