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I have this one bookmarked from some mac youtuber: https://colorfabb.com/silk-grey-ral-7044

Yay!

The PDS slot pinout is in the LC-III Developer Note btw, page 30 (well, 40 in the PDF).

You made it to Hackaday :cool:

You made it to Hackaday :cool:

Yeah no, my Performa 5400 doesn't have one.

I have similar plans but for ADC first… Not even sure I have a machine with this connector anyway. As for pins, it's possible to find bare pins by 100 instead of rows which won't have the pitch required. Worst case you'd use two layers of PCB to keep them aligned and straight.

Look ma, no bodge! Kudos!

200 bytes/s = 200*8 bits/s = 1600 bauds (well, bits/s don't always equals bauds, but in most cases that's it), so not that far.

Probably not entirely but at least import the traces, and compare the netlist yes, footprints might need to be replaced… Anyway, still haven't finished the netlist part for the OpenBoardView import though, and it needs much less info than for full PCB import.

Aw, cool! So that means I'll have to write Sprint import in pcb_new?

I can't find it back but I recall seeing a video recently showing how to open these kind of things using a rubber mallet but with some heating involved, with a hair dryer, and then gently hitting it for quite some time. I suppose a hot air gun from a distance would do as well.

Well I'm even more old-school, I consider schematics ought to come with the hardware you buy, just like was common practice 40 years ago. :p

Starting from the schematics allows generating a proper netlist and in turn using them to make sure tracks are correct. Also, while KiCAD started to standardize parts layout for schematics, and the usual placement is to have components as vertical blocs, it's quite possible to recompose and...

If only we had schematics for those… I'm not sure what the original intent is for this diode, I'd have to open one of the powerbooks I have here that needs fixing but I don't have the time right now. If it's just for reverse polarity protection any of those 1N would do I suppose. Not sure about...

These 1N400x are meant as rectifiers, they can have high reverse voltage (400V for 1N4004, 1000V for 1N4007) and can forward 1A (50A surge), so probably enough to trip PSU's short circuit detection if there's one for reverse polarity, but if not they'd still blow up anyway. It's odd they didn't...

Wow, a company answering someone about an antique device ? A first for me 🙃 Maybe they'd go as far as publishing schematics? 🥺

Ah yes I remember breaking into the same one some years ago… With patience and a good cutter. I think the coin cell might actually fit the original case even.

Aaaaaaaand we have an outline \o/ Much cleaner with some trigonometry to approximate the arcs. Still some holes not hollow, maybe some duplicated points somewhere…

Did you look at the DIN connector yet? There are 3x16 ones on aliexpress that might be cut in two halves I suppose (one requiring some more filing on the plastic key). It should be possible to make a small PCB as cutting rig with marks on the silk screen.