This is a fascinating collection: This person bought an E-Meter (called an "Electrometer") and associated literature used by the Church of Scientology at a yard sale. The gallery has very detailed closeup photos of the device

Might be an interesting project


@cypnk i've never actually seen one of these, but i remember doing some kind of biofeedback exercises or some such with a school psychologist who had a cheap galvanic skin response meter in the early 90s. i now wonder how much that idea bled over into the mainstream from scientology, or if it was already around and hubbard knew a good grift when he saw one...


@brennen Oh good point. My guess is that it was probably around in some form, but he perfected it into grift science and named his church accordingly


@cypnk i know some of the history of his arc from pulp writer → pop psychobabble → full-bore cult, with a big assist from john w. campbell[0] along the way, but i'm not sure when the electronics got tacked on.

kind of sounds like it was added once the notion of "auditing" was already fairly established.[1]



@brennen @cypnk
I have, on a few occasions, held those terminals on such a machine.

@cypnk there isn't much to hack though, it's like two cups and a cable, and does nothing. :)

@melyanna There's a galvanic measurement, which is actually one of the things looked in polygraph tests (whether or not they work is another thing). But my point is this has other circuitry inside which I'm interested in

@cypnk I see what you mean! It's just... Even if you tear it down and fiddle with the circuits, I don't think you can get it to *do* something - other than activating the Wheatstone bridge circuit.
There is lots of stuff about it here, including schematics of some models:

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