indeed these was a early design
(snip)
the parts list/radio shak serials are also there:
While I very much appreciate the legwork done by recall (and a tip of the hat to him!), I am now on the verge of calling a big "BS" on this whole thing until/unless either HDRkid chimes in and clarifies things or we get a visit from the "holy father" of the HDR, Gibbs himself. It is now time to throw around my considerable experience in aerospace systems engineering:
1) The new picture of the "improved" HDR provided by recall is STILL not a complete functional and physical schematic. It does NOT show how the electromagnet connects to the dials and switches <font color="blue">(we could ASSUME that the varistors represent the "dials" but we do not know how resistance of these varistors correlates with a measure of "time/date". We would need to know this in order to be able to put claibration markings on the "dials" so a user would know what they are dialing-in!)[/COLOR], and certainly does not show how this circuit drives the alleged "time coils".
2) STILL no description (or schematic artifacts) that shows what the "rubbing plate" is for.
3) The earlier diagram found and shown by recall shows the electromagnet, a SINGLE switch, some varistors, a regular resistor, a cap, and a power supply. NOWHERE does it show where the "rubbing plate" comes into play, nor the "witness light" (or describe its purpose), nor the dials, and it CERTAINLY does not show where the "time coils" show up in the circuit! (You know...those "time coils" that are allegedly the whole sum and substance of this device!)
All-in-all, what we are looking at is an EXTREMELY piss-poor job of engineering. Terrible. Useless. Not only would I never waste the money on parts to build such a device, as an engineer who works on safety issues of engineering designs day-in-and-day-out, I would STRONGLY RECOMMEND AGAINST ANYONE placing these "time coils" around their heads and powering this device!!! CAUTION!
Once again, in my professional opinion as an aerospace engineer who analyzes circuits for intended function, safety, and purpose for implementing safety-critical flight control systems, what I am seeing here in nothing but BS. There IS NO "design" in any of this that could be analyzed for functionality or safety. It is a non-entity. And if anyone wants to challenge me on my assessment, you'd better know what you are talking about, because I will not hesitate for a moment to expose your ignorance and any hoaxing that I see going on.
For all the blustering I have read from HDRKID about how he wanted people to be able to build it themselves with "Radio Shack" parts, I STILL do not see anywhere near enough information to properly construct this device, much less test it for safety's sake prior to use.
Someone had better clean up their act pretty quickly, because it is VERY sloppy!
RMT