Post B2Nyk9cUGPiJea6pE0 by log@mastodon.sdf.org
(DIR) More posts by log@mastodon.sdf.org
(DIR) Post #B1gZAdBtJMTVEm2aSu by foone@digipres.club
2025-12-27T20:56:35Z
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SINCE WHEN DID THE IBM FLOPPY INTERFACE HAVE A TRACK1 SENSOR, FOONE?
(DIR) Post #B1gasJALE0JppJhrhA by foone@digipres.club
2025-12-27T21:15:42Z
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okay I finished designing the PCBand right before I hit order, I realize one of the footprints is rotated 180 degrees
(DIR) Post #B1gbMaxVdRvfhM98QS by foone@digipres.club
2025-12-27T21:21:03Z
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@oblomov @TomF yeah I had to use that article series for reference, because I recently implemented that floppy detection nonsense
(DIR) Post #B1gd6iqClHUBQ4Hxmy by foone@digipres.club
2025-12-27T21:40:43Z
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I did this on accident but I'm tempted to leave it just because it hurts
(DIR) Post #B1gdqkLNVSclOvodyS by mmu_man@m.g3l.org
2025-12-27T21:48:30Z
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@foone you got side-tracked?
(DIR) Post #B1geB2CKpos8ZBGBX6 by foone@digipres.club
2025-12-27T21:52:45Z
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here's the "final" version. It's a floppy drive cable, but as a PCB
(DIR) Post #B1gePTIeroiufy6N96 by futurebird@sauropods.win
2025-12-27T21:55:45Z
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@foone Misread the text at first...MOTOROLAMOTOROLBMOTOROLC ...
(DIR) Post #B1geRXXe4ElcPW69HE by futurebird@sauropods.win
2025-12-27T21:56:07Z
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@foone I like the floppy logo.
(DIR) Post #B1get1f0C98fdme5Jo by foone@digipres.club
2025-12-27T22:00:41Z
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shipping from JLCPCB is deeply silly now.5x copies of this PCB is 3.20$, and shipping is another 38$
(DIR) Post #B1gf0ZjntV3bMCUWmG by piggo@piggo.space
2025-12-27T22:02:22.919164Z
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@foone this one looks even DIYable with some acid
(DIR) Post #B1gf5MPWs4JNTKI1uS by piggo@piggo.space
2025-12-27T22:03:15.412006Z
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@foone guess you aren't in a place to etch pcbs atm though
(DIR) Post #B1gfCRmlHok2AVXHZQ by foone@digipres.club
2025-12-27T22:04:12Z
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price is about half that on oshpark
(DIR) Post #B1gfGI9L3QDTRRvfns by foone@digipres.club
2025-12-27T22:04:47Z
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@mos_8502 looks like you can get it down to about 17$ but that's without customs duties, and who knows what those will be
(DIR) Post #B1gfJG57CSARtdMtlY by slaeshjag@bitbang.social
2025-12-27T22:04:52Z
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@foone Is that due to tariffs and such? "Global standard direct line" is usually < $10 to sweden
(DIR) Post #B1gfM7PnsSt1t3PQ5Q by foone@digipres.club
2025-12-27T22:05:59Z
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oshpark it is then!
(DIR) Post #B1gfPFf5foO0Ke3Mqe by foone@digipres.club
2025-12-27T22:06:28Z
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@slaeshjag I think so yeah. normally DHL is bad on JLCPCB but now it's way worse
(DIR) Post #B1ghheucjNqflYDwKe by cr1901@mastodon.social
2025-12-27T21:02:39Z
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@foone IIRC, the 34-pin interface doesn't really have a Reduced Write Current pin either. That was on the 50-pin interface and the most ancient MFM drives (ST-506-era). I think most ppl looked at pinouts.ru and copied it.That said: @brouhaha, please correct me, since I may be misremembering.
(DIR) Post #B1ghhgJ7Xn2Q5oh19c by brouhaha@mastodon.social
2025-12-27T22:29:50Z
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@cr1901 @foone The Shugart SA400, which originally defined the 34-pin floppy interface, didn't have RWC, TG43, or anything equivalent. The SA450 (double sided) added a head select and "in use".Given how fast and loose vendors played with the "standard", I wouldn't be surprised if someone made a drive that needed it.
(DIR) Post #B1ghhhTnBbAVjCh3QW by brouhaha@mastodon.social
2025-12-27T22:30:43Z
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@cr1901 @foone But I assume that the signal is present on the Greaseweasel connector specifically to support wiring an adapter to an eight-inch (50-pin) drive, rather than due to any expectation that a 5¼ or 3½ inch drive need it.
(DIR) Post #B1ghhiSPYDeqlD3Sue by foone@digipres.club
2025-12-27T22:32:07Z
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@brouhaha @cr1901 The name is actually wrong: this is the floppy density pin, which is a whole complex issue
(DIR) Post #B1hGxRid34GvsNsPtA by foone@digipres.club
2025-12-28T05:07:09Z
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@NekoEd yup!
(DIR) Post #B1zaunzlGTAU1bBfOq by foone@digipres.club
2026-01-06T01:15:41Z
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this may have been a mistake. it's been 9 days and they haven't even made the thing, let alone shipped it at me
(DIR) Post #B1zcXzZoEsJHBxIWzw by foone@digipres.club
2026-01-06T01:33:54Z
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@gloriouscow just a copy-paste error
(DIR) Post #B1zcn2kiiGPTNyZv2O by JennyFluff@chitter.xyz
2026-01-06T01:36:39Z
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@foone @gloriouscow #offbyone
(DIR) Post #B2NvFR0JHPjujKucKm by foone@digipres.club
2026-01-17T18:56:28Z
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it arrived yesterday!
(DIR) Post #B2NvJyQEyQRlX8CnGS by foone@digipres.club
2026-01-17T18:57:23Z
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and the other side, which I didn't show before
(DIR) Post #B2NvNopeZUBqwrvRuy by foone@digipres.club
2026-01-17T18:58:00Z
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I think I fucked it up, it's gonna block the power connector *shrug*I can work around it for this prototype but that's a pain
(DIR) Post #B2NvrSu8f7sxd29z5U by foone@digipres.club
2026-01-17T19:03:27Z
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or maybe I designed this to be used upside down?I can't recall
(DIR) Post #B2NwTnFDUGWViSIMoS by foone@digipres.club
2026-01-17T19:10:20Z
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yeah looking at the pinout on kicad I think this will work either way, and the L-shaped cutout makes sense if it's upside down I should have put more text on it to explain to me how to make it work, but I was expecting I'd still remember how it worked.22 days to get it to me ruined that
(DIR) Post #B2NwZ1HCkAd2gRiWtU by foone@digipres.club
2026-01-17T19:11:22Z
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current me needs to remember to document things because future foone is very forgetful
(DIR) Post #B2NwvT2oBUDPAtggiG by foone@digipres.club
2026-01-17T19:15:22Z
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@gloriouscow THEY'RE SO SHARPand when I was clippering them off, one managed to evade my glasses and twack me in the eye!
(DIR) Post #B2Nwz9aMTQWnyz8hfM by foone@digipres.club
2026-01-17T19:16:00Z
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@scuttlebutt intentional! I prefer it with the s
(DIR) Post #B2Nyk9cUGPiJea6pE0 by log@mastodon.sdf.org
2026-01-17T19:35:44Z
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@foone Is that what past foone told you?
(DIR) Post #B2O3yCOJFx5s4czgxM by wanderingthoughts@mas.to
2026-01-17T20:21:09Z
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@foone@scuttlebutt
(DIR) Post #B2O3yDjyEu0yG68VMG by foone@digipres.club
2026-01-17T20:34:12Z
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@wanderingthoughts @scuttlebutt oh wow I missed that
(DIR) Post #B2O41HQiyhVwZQaojo by foone@digipres.club
2026-01-17T20:34:29Z
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soldered it. it works, but only upside down from how I wanted it to work.
(DIR) Post #B2O50TnxaEQecAdwh6 by foone@digipres.club
2026-01-17T20:45:56Z
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The greaseweazle's floppy connector is flipped from the floppy connector, which'd be fine except I also made my PCB flip it. So two flips countered each other out
(DIR) Post #B2O53T2urRJf8840Bs by foone@digipres.club
2026-01-17T20:46:04Z
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I've always had trouble with binaries like this
(DIR) Post #B2O9YerPNvPUZ7oEU4 by foone@digipres.club
2026-01-17T21:36:51Z
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flipped the connector and reordered the PCB.from JLCPCB this time
(DIR) Post #B2O9iHIHrL2kN4y77o by Beckydog@hydaelyn.coerthansnowstorm.online
2026-01-17T21:38:37Z
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@foone why not try making friends with some…Non binaries! <\rimshot>
(DIR) Post #B2OIVKLE7JbVe5F7qq by foone@digipres.club
2026-01-17T23:17:06Z
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@Beckydog I am the non-binaries!
(DIR) Post #B2OIYrOffpU92BXT7o by gaelle@eldritch.cafe
2026-01-17T21:38:19Z
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@foone where did you order your PCBs before?
(DIR) Post #B2OIYssq99DBe2f4mu by foone@digipres.club
2026-01-17T23:17:16Z
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@gaelle OshPark
(DIR) Post #B2OuloSFiju9vpojZI by Beckydog@hydaelyn.coerthansnowstorm.online
2026-01-18T06:25:54Z
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@foone then make friends with yourself! :)
(DIR) Post #B2nIq8XJV1h57Ruhpg by foone@digipres.club
2026-01-30T00:48:37Z
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It arrived! and has been soldered together.Works fine, too.
(DIR) Post #B2nJ4lj2akzwiTNNXE by foone@digipres.club
2026-01-30T00:51:21Z
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Here's a view where you can better see what's going on. It's holding the greaseweazle flux imager to the bottom of the floppy drive, without needing a long (or short, for that matter) floppy drive cable. This fixes some mounting problems for my Portable Floppy Imager and will help make the whole thing more compact.