IIci etc. ATX to 10pin Adapter
- Thread starter Phipli
- Start date
Never mind...I found a fork that filled in the dimensions.
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Beware, that's not a fork from another design, that's my own and it's slightly different by being mostly SMD (surface mount) and having a switch to chose between soft-power and always-on (for Macs with a dodgy soft-power circuitry). You're welcome to build it for yourself (and others), but you need to make sure the PCB, BoM, pick'n'place, etc. are all from the same source if you want a successful build.
Edit: from seeing another of your post, I can also confirm it's known to work in IIsi (in addition to IIci).
Tried jlcpcb's build service but cannot figure out the bom or pick and place files. Used IIci_ATX_jlcpcb for the bom and IIci_ATX-all-pos-jlcpcb for the p&p but its saying its missing things? Don't know, never done this before so I'm probably doing it wrong.
Those are the correct files, but the pick'n'place file only has the surface mounted components. The two plugs for power (J1, J2) and the switch (U1) I got separately and soldered by hand (they are listed in the BoM) - they hare through-holes. J2 is on the bottom side and by default JLCPCB only does one side so that one will have to be done by hand anyway.
Huh, well I'll try again but it popped up an internal server error when I tried to continue lol.
EDIT: OK, went through this time. Had to search for 2 components (LED and the SN74) but jlcpcb found them pretty easily. I am confident with through hole but not SMD yet so we'll see if I messed anything up with the service. Thanks for the files!
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@Phipli, in case you still have some of these left:
I am shortly going to order some of @GRudolf94 's boards from JLCPCB for my 840AV. Since the minimum order quantity is 5 and I only need one, would you like to trade a couple of your 'IIci etc' boards for a couple of my '840AV/8100/etc' boards?
Hi,
I intend to build one of those ATX converters from this thread to resurrect a IIsi which is missing it's power supply completely. But I'm slightly confused of all the different versions floating around here, so I don't know exactly which one I should build and which ones fits my needs. What is important to me is that the Soft-Poweron/Poweroff from Keyboard and the backside Power button is working and that it's also possible to have it always on as soon as power is applied externally (in case the IIsi Board has problems with the Soft-Power circuitry).
Found the following three different models (maybe there are more?):
10-pin for IIsi side: https://www.digikey.at/en/products/detail/molex/0015247101/1633800
24-pin for ATX side: https://www.digikey.at/en/products/detail/molex/0442060007/3311018
Would be nice if someone also can confirm that these are the proper parts to source.
With kind regards,
Egon
I intend to build one of those ATX converters from this thread to resurrect a IIsi which is missing it's power supply completely. But I'm slightly confused of all the different versions floating around here, so I don't know exactly which one I should build and which ones fits my needs. What is important to me is that the Soft-Poweron/Poweroff from Keyboard and the backside Power button is working and that it's also possible to have it always on as soon as power is applied externally (in case the IIsi Board has problems with the Soft-Power circuitry).
Found the following three different models (maybe there are more?):
- https://github.com/MelkhiorVintageComputing/IIci_ATX
- https://github.com/Blackbird128/MacATX/
- https://codeberg.org/cryu/MacATX
10-pin for IIsi side: https://www.digikey.at/en/products/detail/molex/0015247101/1633800
24-pin for ATX side: https://www.digikey.at/en/products/detail/molex/0442060007/3311018
Would be nice if someone also can confirm that these are the proper parts to source.
With kind regards,
Egon
Mine is SMT as it's not expensive to get the SMT done byy JLCPCB, and it avoid having to source and deal with the small discrete parts. The big connectors (which are also the most expensive parts) are easier to stock and handle for me.
The reason I did my own is the little switch to select between "soft-power" and "always-on". I find it helpful when a machine it not reliably starting/staying on.
The footprints of parts may be different between make and models, so you need to check what are the originally intended parts for each design. It should be in a BoM somewhere. For my own, it's visible in the KiCad schematics as "MPN" and in the BoM proper (IIci_ATX_jlcpcb.csv).
