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by tzok
Sat Jul 18, 2020 6:15 pm
Forum: 3D MODELS
Topic: Atari ST Floppy connector
Replies: 0
Views: 243

Atari ST Floppy connector

DIN-14 alike floppy connector plug for Atari ST:
https://www.thingiverse.com/thing:4401894

Uses Degson STL1350 or DG333J-3,5 pins (these are pin-rails, from which pins have to be extracted).
2020-06-07 11.33.02.jpg
2020-06-07 11.33.02.jpg (50.48 KiB) Viewed 243 times
DIN14.jpg
DIN14.jpg (33.56 KiB) Viewed 243 times
2020-06-15 16.12.45.jpg
2020-06-15 16.12.45.jpg (130.82 KiB) Viewed 243 times
by tzok
Sat Jul 18, 2020 6:08 pm
Forum: CHAT FORUM
Topic: External floppy leads - any demand ?
Replies: 5
Views: 860

Re: External floppy leads - any demand ?

Actually, I've mixed thigs up, the Degson number is DG333J-3,5, while the STL1350 is the PTR (Mecano) number. I have added some extra photos and links to the Thingiverse projects of this plug, and a key stem to the 3D Models section. Degson seems to be local, for global source of the pins, please us...
by tzok
Sat Jul 18, 2020 5:27 pm
Forum: CHAT FORUM
Topic: External floppy leads - any demand ?
Replies: 5
Views: 860

Re: External floppy leads - any demand ?

If anyone is interested I have designed and successfully 3D printed and assembled a 14-pin Atari ST floppy connector:
https://www.thingiverse.com/thing:4401894
by tzok
Sat Jul 18, 2020 5:17 pm
Forum: HARDWARE DISCUSSIONS
Topic: Memory current demand
Replies: 7
Views: 541

Re: Memory current demand

...it is a 2.3 A max for a 1 MB machine.
by tzok
Fri Jul 10, 2020 8:01 pm
Forum: PSU (power supplies)
Topic: How to remove 1040STE power supply?
Replies: 17
Views: 1061

Re: How to remove 1040STE power supply?

There were different shielding configurations in the STe... not all had the PSU screwed to the rear shielding plate.
by tzok
Wed Jul 01, 2020 11:51 pm
Forum: HARDWARE ISSUES
Topic: RGB SCART - ARGHHH
Replies: 19
Views: 1009

Re: RGB SCART - ARGHHH

At the TV, pin 8 has a few kOhms, while blanking input (pin 16) is terminated with 75 Ohm resistor.
by tzok
Sun Jun 28, 2020 9:53 pm
Forum: HARDWARE ISSUES
Topic: RGB SCART - ARGHHH
Replies: 19
Views: 1009

Re: RGB SCART - ARGHHH

Diode and capacitor are needed, because this input has 75 ohm impedance on the TV side, so you can't use 12V out from ST and a resistor divider (actually from the ST you can, but not from STe*), and it needs to be about 2 VDC voltage. VSync obviously is not a DC, and some TVs can switch between comp...
by tzok
Fri Jun 26, 2020 5:20 pm
Forum: NEWS & ANNOUNCEMENTS
Topic: STF upgrades plan for 2021
Replies: 11
Views: 1744

Re: STF upgrades plan for 2021

...so maybe you could consider moving abandoned projects to the Public Domain?
by tzok
Sat Jun 20, 2020 9:39 pm
Forum: HARDWARE ISSUES
Topic: Atari STE - Issues with power connector (J302)
Replies: 22
Views: 4260

Re: Atari STE - Issues with power connector (J302)

Yet, computer should boot just fine, without it.
by tzok
Sat Jun 20, 2020 10:33 am
Forum: HARDWARE ISSUES
Topic: Atari STE - Issues with power connector (J302)
Replies: 22
Views: 4260

Re: Atari STE - Issues with power connector (J302)

STe should boot just fine without 12V. STe floppies used in STes don't use it, and even if you'd cut it completely off from the PSU, just the composite video/TV out would be non-functional.

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