[Coco] 2 x 3.5 Drives on CoCo

[Jason Law]

Hi Andrew,

Thanks for the links.

I did some google-ing last night and found this:

http://www.8starshop.com/en/12v-5v-ac-adapter-for-hard-disk-drive-power-supp
ly.html

Certainly capable of running two 3.5" floppy drives with a y cable.

Also cheap enough :D

I'm thinking what I'll do is buy one of these and put a 4 pin female DIN on
the end of the power cable and a male socket in the back of the case.

The case would not need to be much bigger than the drives. Also easier to
salavage the floppy drive connector cables from an old PC power supply and
just solder them in parallel to the male 4 pin DIN.

Sound like a plan?

No just the case... Duct tape would do it but I'm sure I could find
somnething that looks a little nicer :D

-----Original Message-----
From: coco-bounces at maltedmedia.com
[mailto:coco-bounces at maltedmedia.com]On Behalf Of Andrew
Sent: Sunday, March 14, 2010 5:07 AM
To: coco at maltedmedia.com
Subject: Re: [Coco] 2 x 3.5 Drives on CoCo


Jason,

If you're willing to spend a little money, I am sure you can find a
suitable power supply at All Electronics or some other online surplus
electronics retailer; something like this:

http://www.allelectronics.com/make-a-store/item/PS-7607/POWER-SUPPLY-5.1V/3A
-12.0V/2A-5.0V/.34A/1.html

I know I purchased one from All Electronics several years back for an
AMD586-based motherboard MP3 player project; it ran the hard drive, the
motherboard, and peripheral cards (ethernet and sound) - on occasion, as
I was developing hardware interfaces and such (keypad + LCD hanging off
the parallel port), I needed to use a cd-rom drive and floppy, and it
powered those fine as well.

If that doesn't work, then if you can find an old TIVO, they have some
excellent power supplies in them that are fairly small, and easily removed.

Another possibility (though more expensive) is a Pico-PSU - they run off
a (hefty) 12 VDC PSU, and are meant for Car PC and other embedded apps;
they don't look like much (they are really small), but they should be
powerful enough for running a couple of floppy drives. I have one in a
robotics project that powers a Micro-ATX ATOM motherboard, two 2.5 250gb
drives, a RAID card, and a wireless router:

http://www.mini-box.com/s.nl/it.A/id.417/.f

Hope this helps!

-- Andrew L. Ayers, Glendale, Arizona


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