Trash80toHP_Mini
NIGHT STALKER
@blusnowkitty has posted a thread documenting his collaborative efforts with @Compgeke in developing the first version of a universal ATX to Ten-Pin-Mac conversion board. Very, very cool, props guys! :approve:
View attachment 30212
View attachment 30265
Bodge wire fixes qualify it as a very proper prototype! :approve:
View attachment 30264
In the IP @blusnowkitty mentioned the IIsi as the target machine of the moment and he's testing the adapter in it as pictured. So of course I jumped in with some suggestions, but I think that IIsi conversion tangent needs to be spun off. IIsi PSU modification is a special case, so to speak. Physical constraints make it the most difficult of 10-Pin Mac conversions. I've had the bits for FlexATX upgrade of my fishy IIsi PSU for I'm hot sure quite how many years sitting in the IIsi project drawer. Had some crazy plans for my particular application back when, but have rethought the project in terms of fitment to a stock IIsi with modifications made only to the PSU can. So here goes:
The PSU I have on hand should work nicely. The only mod done so far is the notch filed out of a blank area of the PCB at the front to nudge it as far forward as needed to retain the stock Power Plug/Monitor Passthru/backside of the stock can.
Here's a closeup, notice the vertically oriented stock fan, more on that later.
The PCB of the FlexATX PSU is angled down from back to front as much as possible for clearances at both ends.
Power connector has been been removed from the donor PSU, connection will be desoldered and hardwired from the front of the can for connection to the stock IIsi assembly at the rear.
Raised rear of angled PCB provides cubic for the Universal Converter and possibly more "stuff."
Here's how it looks from the rear, lots and lots of cubic available, all things considered.
Long ago I sketched the IIsi specific adapter I was planning to make using the cable connector harvested from that smelly PSU board.
Mockup of first version was made to be printed, folded and installed inside the IIsi can for visualization. PCB is mounted upside down to the lid which clears stock connector, wiring and my planned conversion board nicely. Never figured out clearance for the guide post at the that I recall? Dunno, but it's definitely a design requirement that's nicely sidestepped by the new, angled PCB approach in the pictures. Inversion of the PCB flips what would be stock FlexATX fan's intake over to the opposite side of the IIsi enclosure which keeps the retaining connector slot intact. Each side represents what is would look like if the opposite side of the box were clear.
Anyway, that's where I started, the pics are of what I'm now planning.
For the front section, I'll be fabricating some ductwork from the very thin, very inexpensive, Big Box available aluminum step flashing that anyone could make by the scoring and bending method. Using a thin profile, 10x50x50mm fan or a pair of smaller thinner fans I have on hand, all heat from the FlexATX PSU will be ducted from where it would enter the donor PSU can's fan intake and blown out what are the air intake vents of the standard IIsi PSU matching up with those on the case lid. Such will make a nice overall improvement for the heating/cooling budget of a IIsi tricked out with several PDS upgrades.
In stock form, cooling air for the IIsi PSU enters from the top vents, migrating out the can's many side panel perforations due to negative air pressure from the exhaust fan and then exits there along with all other heat produced by the system.
Dunno, off until Leftover Day, maybe I can get something accomplished. :blink:
View attachment 30212
View attachment 30265
Bodge wire fixes qualify it as a very proper prototype! :approve:
View attachment 30264
In the IP @blusnowkitty mentioned the IIsi as the target machine of the moment and he's testing the adapter in it as pictured. So of course I jumped in with some suggestions, but I think that IIsi conversion tangent needs to be spun off. IIsi PSU modification is a special case, so to speak. Physical constraints make it the most difficult of 10-Pin Mac conversions. I've had the bits for FlexATX upgrade of my fishy IIsi PSU for I'm hot sure quite how many years sitting in the IIsi project drawer. Had some crazy plans for my particular application back when, but have rethought the project in terms of fitment to a stock IIsi with modifications made only to the PSU can. So here goes:
The PSU I have on hand should work nicely. The only mod done so far is the notch filed out of a blank area of the PCB at the front to nudge it as far forward as needed to retain the stock Power Plug/Monitor Passthru/backside of the stock can.
Here's a closeup, notice the vertically oriented stock fan, more on that later.
The PCB of the FlexATX PSU is angled down from back to front as much as possible for clearances at both ends.
Power connector has been been removed from the donor PSU, connection will be desoldered and hardwired from the front of the can for connection to the stock IIsi assembly at the rear.
Raised rear of angled PCB provides cubic for the Universal Converter and possibly more "stuff."
Here's how it looks from the rear, lots and lots of cubic available, all things considered.
Long ago I sketched the IIsi specific adapter I was planning to make using the cable connector harvested from that smelly PSU board.
Mockup of first version was made to be printed, folded and installed inside the IIsi can for visualization. PCB is mounted upside down to the lid which clears stock connector, wiring and my planned conversion board nicely. Never figured out clearance for the guide post at the that I recall? Dunno, but it's definitely a design requirement that's nicely sidestepped by the new, angled PCB approach in the pictures. Inversion of the PCB flips what would be stock FlexATX fan's intake over to the opposite side of the IIsi enclosure which keeps the retaining connector slot intact. Each side represents what is would look like if the opposite side of the box were clear.
Anyway, that's where I started, the pics are of what I'm now planning.
For the front section, I'll be fabricating some ductwork from the very thin, very inexpensive, Big Box available aluminum step flashing that anyone could make by the scoring and bending method. Using a thin profile, 10x50x50mm fan or a pair of smaller thinner fans I have on hand, all heat from the FlexATX PSU will be ducted from where it would enter the donor PSU can's fan intake and blown out what are the air intake vents of the standard IIsi PSU matching up with those on the case lid. Such will make a nice overall improvement for the heating/cooling budget of a IIsi tricked out with several PDS upgrades.
In stock form, cooling air for the IIsi PSU enters from the top vents, migrating out the can's many side panel perforations due to negative air pressure from the exhaust fan and then exits there along with all other heat produced by the system.
Dunno, off until Leftover Day, maybe I can get something accomplished. :blink: