SCSI2SD - External Bus powered, From termination power.

[uniserver]

I have not done this yet, but it sounds to me very promising.

the thought of popping onto the rear DB25 port and nothing else needed..!

that is almost as useful as USB.  all the mac's come with a scsi port on the back from the plus all the way to the G3 Power Mac

And even the plus, from what techknight mentioned, has termination power when you install the diode that is missing from the pcb.

I talked to Mike, he is pretty sure with a slight mod to the board i can run the whole thing from termination power.



From Mike McMaster, designer of the SCSI2SD

27/01/15 - Running the whole board on termination power could be possible. The board would need to use MUCH bigger capacitors to make this possible.  You could try this on your own board by removing D1 and replacing it with a solder bridge, then soldering a large electrolytic capacitor on the board, either at J7,  J11 or J8 (or all three ?). J7/J11/J8 all of a 5V and ground pin on standard 0.1" spacing.

lol i just now saw this...  On Mike's Website LOL!!!!!   good for him.



http://www.codesrc.com/mediawiki/index.php?title=SCSI2SD

Maybe i was the one that helped this idea along?  haha.

 

[MidnightCommando]

I don't suppose we know if the tiny!SCSI2SD that used to exist for PowerBooks is ever going to be remade?

I can't imagine that the SCSI drives in the 1x0 2x0 5x0 machines are going to last terribly much longer.

I do know that some of the later ones came with an Apple-manufactured bridge, but I also can't imagine that said bridges are terribly plentiful.

 

[uniserver]

I think they didn't sell very good, he may get some more in stock at one point, but they did not sell well enough to really keep having them made up.

I am sure you would always be able to build one your self though… for sure.

 

[uniserver]

http://shop.codesrc.com/index.php?route=product/product&product_id=52

looks like he has one for sale here.

 

[techknight]

I wonder if its because the powerbooks are less desirable because of their inherent problems with plastics, screens, etc.. 5XX seem to be ok except for the lower LCD bezel, but the 1XX is absolutely horrid. 

For some reason though, I like the Duo even though their keyboards probably perform worse than a modern day $5 cheapie. 

 

[uniserver]

Well at least the powerbook 100 doesn't have crap plastics.  

Oh and the Portable.

 

[NJRoadfan]

There were more than just Powerbooks that used 2.5" SCSI drives. The PowerPC IBM Thinkpads (which I don't think work with the SCSI2SD) and Tadpole SPARCbook are a few of the other machines that used them. Personally I would just build the 2.5" versions and include a desktop adapter.

 

[toholio]

lol i just now saw this...  On Mike's Website LOL!!!!!   good for him.

Screen Shot 2015-03-03 at 4.30.10 PM.png

http://www.codesrc.com/mediawiki/index.php?title=SCSI2SD

Maybe i was the one that helped this idea along?  haha.

Mine arrived at work this morning. Hopefully I'll have time to play with it in the next few days.

 

[uniserver]

is it the new tiny one?

 

[toholio]

is it the new tiny one?

Yup. Looks slightly different to the picture posted earlier. It's red, the USB socket is recessed, etc. Very swish.

I've also got a Classic II that should be fine with new caps so I'll probably pop it in there. Now I just need some spare time...