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I travel a lot for work, usually near various military installations. I go to estate sales and see if there's any cool stuff, and sometimes I buy it. Recently went to some old dude's house and saw this circuit board (3$), mounted on a wooden pedestal, in a place of honor. Nothing around to give away what the heck it is from. Guy had a lot of rocket and space stuff in his home. Previously you goons helped me translate an old WWII letter I picked up that was kinda interesting (https://forums.somethingawful.com/showthread.php?threadid=3925697). I hope some of you might be able to also figure something out about this thing too.   What is this thing from?
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Aug 23, 2022 17:49
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| # ? May 21, 2024 15:10 |
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So that's where the control board to my cum pump wound up
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Aug 23, 2022 17:53
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Destroy it before Cyberdyne creates Skynet with it.
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Aug 23, 2022 17:57
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You Are A Elf posted:Destroy it before Cyberdyne creates Skynet with it. Uuuh, did you not read the part where I paid 3 dollars for it? I'm not just going to waste that kind of money. 
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Aug 23, 2022 18:01
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horrifying circuit pattern. extremely cursed hand drawn etch. i hate it. between that and the 100% through hole solder construction, but not on bakelite, i'm going to say late 60s. that's all i have though cause i'm a mech eng. and i hate electricity
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Aug 23, 2022 18:03
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Yeah it's from a factory OP
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Aug 23, 2022 18:05
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wait i missed the ICs on the right. i'm gonna revise to early to mid 70s
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Aug 23, 2022 18:07
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OP i googled the number on the board. well see ya.
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Aug 23, 2022 18:08
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maybe a early predecessor to a PLC board? It has ICs on it
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Aug 23, 2022 18:08
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hot cocoa on the couch posted:horrifying circuit pattern. extremely cursed hand drawn etch. i hate it. So probably some old man's garage project?
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Aug 23, 2022 18:09
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spacetoaster posted:So probably some old man's garage project? no that was very much made in a factory
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Aug 23, 2022 18:10
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Nothing on the model numbers on the PCB that I can find. The capacitors are mil-spec though so it could be military, space, aviation, who knows might just be from some lab gear. Looks like date codes on the components in the 70s and the look of it tracks for that age. A youtuber called CuriousMarc is doing teardown and restorations on a bunch of Apollo gear and some of those things have plug in boards like that in the subassemblies. Any markings on the metal strip clamped along the top edge there?
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Aug 23, 2022 18:10
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MrQwerty posted:no that was very much made in a factory Told you
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Aug 23, 2022 18:10
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That's the master ice controller board from the old 700 series of margarita machines, they haven't been used in newer models since the late 80's.
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Aug 23, 2022 18:13
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that's a sharp x 68000 motherboard duh. you can tell by the flux capacitors. see how they're inverted?
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Aug 23, 2022 18:14
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I can tell you that is some top-quality IPC3 soldering before IPC3 was a thing, and the components say the solder is leaded The underside may have been waved, the ICs are definitely hand-soldered. MrQwerty fucked around with this message at 18:22 on Aug 23, 2022 |
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Aug 23, 2022 18:15
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Isomermaid posted:Nothing on the model numbers on the PCB that I can find. The capacitors are mil-spec though so it could be military, space, aviation, who knows might just be from some lab gear. Looks like date codes on the components in the 70s and the look of it tracks for that age. A youtuber called CuriousMarc is doing teardown and restorations on a bunch of Apollo gear and some of those things have plug in boards like that in the subassemblies. Whoa, yeah there are.  How can you tell the capacitors are military?
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Aug 23, 2022 18:29
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spacetoaster posted:Whoa, yeah there are. Those are component markings for drop probably, they tell you what part number goes in what position based on a diagram. Match component markings with positions. This board is specifically missing R28, R10 and R9 on the topside, so that gives you an idea that it's a new version or revision. Revision seems likely with the cutout circuit, it could possibly a prototype of a revision reducing parts that was hand-etched. MrQwerty fucked around with this message at 18:41 on Aug 23, 2022 |
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Aug 23, 2022 18:33
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spacetoaster posted:Whoa, yeah there are. Just googled the numbers and pulled up data sheets. The numbers on the top edge line up with the blue packages which googling tells me are variable resistors with little screws for adjustment, so yeah it's something that needed calibrating perhaps. This is a video of Marc's where at 1.20 ish you see what it reminded me of https://www.youtube.com/watch?v=66LK1UxKHAM
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Aug 23, 2022 18:41
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It’s from a missile, space vehicle, or satellite OP
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Aug 23, 2022 19:06
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Looks like parts have been de-soldered from the board including either a multi-position switch or a vacuum tube.
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Aug 23, 2022 19:12
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Power it up OP, what’s the worst that could happen ?
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Aug 23, 2022 19:15
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Have you tried putting it in your anus?
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Aug 23, 2022 19:20
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That's where he got it from, idiot!! I'd say it's a rare expendable item designed to generate 3 dollars for the owner. The specifics of its arcane design is lost to ages.
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Aug 23, 2022 19:23
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Who What Now posted:Have you tried putting it in your anus? OP already said it was displayed in a place of honor
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Aug 23, 2022 19:23
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Who What Now posted:Have you tried putting it in your anus? I mean it does have ASSY printed right on the board.
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Aug 23, 2022 19:29
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That's the motherboard for the 🅱️lamess 🅱️-🅱️ot. He needs it to forgive student loans op, give it back
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Aug 23, 2022 19:35
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its for an Electro-Harmonix FartBlaster guitar pedal - makes your guitar playing sound like, well....your posting, OP
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Aug 23, 2022 19:50
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The missing resistors look like they connect into a bunch of components that are there, so they might have pulled the components they wanted for something else. Either the previous owner or whoever awarded it to them.
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Aug 23, 2022 19:53
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If you eat a capacitor you might gain deeper knowledge of its purpose and perhaps a degree of its forgotten power
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Aug 23, 2022 20:10
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I bet it’s part of an Apollo or a shuttle and the dead guy had some hand in building or designing it or was just a collector and his lovely family had no idea and just sold his prized piece off to some rando for 3 bucks.
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Aug 23, 2022 20:14
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Looks like a 3 stage buffer with some transformer interrupts, probably for some kind of control input.
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Aug 23, 2022 20:16
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Aug 23, 2022 20:19
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Can you throw it in the small fire youve constructed in your backyard while safely recording the whole experience with your digital camera for the sole purpose of our collective entertainment op?
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Aug 23, 2022 20:21
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BAGS FLY AT NOON posted:I bet it’s part of an Apollo or a shuttle and the dead guy had some hand in building or designing it or was just a collector and his lovely family had no idea and just sold his prized piece off to some rando for 3 bucks. it does appear to be a 70s aerospace controller based on the molex connector and milspec components, but other than that i've exhausted my usefulness
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Aug 23, 2022 20:30
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I’ve got some wood that needs identifying
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Aug 23, 2022 20:31
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I'll get the microscope 
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Aug 23, 2022 20:32
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Colonel Cancer posted:I'll get the microscope 
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Aug 23, 2022 20:33
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it's goatse, op
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Aug 23, 2022 20:34
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| # ? May 21, 2024 15:10 |
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I tried to look them up but got nothing. Does anyone know what those 69xx series ICs do? They seem like the kind of thing that’s standard. It’s also weird to see surface mount ICs like that in such an old piece of tech. Could you get any dates or anything off this?
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Aug 23, 2022 20:46
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