[Coco] tandy 1000 ex/hx external 720k drive to use on coco

[Gene Heskett]

On Friday 19 June 2015 21:27:52 Josh Harper via Coco wrote:
> is there anyway to hook up a power adapter that plugs into the wall

Most such adaptyors are single voltage devices, so you would need a 5 
volt, amp or so, and a 12 volt, amp or so.  Sorta unhandy, so I've made 
use of the drive conectors on an old XT supply that lives in the bottom 
of a drive tower, to power, in my case, the whole maryann including the 
coco3 and MPI.  But thats a lot more complex than just using an old pc 
psu, which has all those voltages already wired to its drive plugs.

>       From: Bill Pierce via Coco <coco at maltedmedia.com>
>  To: coco at maltedmedia.com
> Cc: Bill Pierce <ooogalapasooo at aol.com>
>  Sent: Friday, June 19, 2015 7:23 PM
>  Subject: Re: [Coco] tandy 1000 ex/hx external 720k drive to use on
> coco
>
> The external drive he is referring to has the standard 3.5 4 pin plug
> (internally) and all it needs is an adapet to the larger 4 pin used on
> Coco 5.25 drives. The ribbon cable should be fine, it just needs a 3.2
> connector pressed on.
>
> I had one of these drives and it took me about  15 mins to hook it up.
> You just remove all the T-1000 crap internally, then it's a standard
> 3.5 drive with no power supply.
>
>
>
>
>
>
> Bill Pierce
> "Charlie stole the handle, and the train it won't stop going, no way
> to slow down!" - Ian Anderson - Jethro Tull
>
>
>
> My Music from the Tandy/Radio Shack Color Computer 2 & 3
> https://sites.google.com/site/dabarnstudio/
> Co-Contributor, Co-Editor for CocoPedia
> http://www.cocopedia.com/wiki/index.php/Main_Page
> Global Moderator for TRS-80/Tandy Color Computer Forums
> http://www.tandycoco.com/forum/
>
> E-Mail: ooogalapasooo at aol.com
>
>
>
>
>
>
> -----Original Message-----
> From: Bruce W. Calkins <brucewcalkins at charter.net>
> To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
> Sent: Fri, Jun 19, 2015 5:00 pm
> Subject: Re: [Coco] tandy 1000 ex/hx external 720k drive to use on
> coco
>
>
> The 4 pin connector (many Tandy 1000's did not have one and shunted
> power
>
> through the ribbon cable.) should be the standard 3.5" floppy power
> connector.
> A picture and model numbers might help identify the drive.  On
> the Tandy floppy
> drives without the 4 pin connector some of the ground lines
> carried the power
> and traces needed to be cut and power lines tapped in.
> Not an easy project
> unless you are proficient reading schematics and/or
> tracing PCBs.  I converted
> one 720k 3.5” Tandy 1000 drive about 20 years
> ago and would not bother doing
> another.  Although 1.44M 3.5” are getting
> hard to find nowadays.
>
> Bruce
> W.
>
>
>
>
>
> ----- Original Message -----
>
> From: "Josh Harper via Coco"
>
> > I have
>
> a tandy 1000 ex/hx external 720k floppy drive that I want to
>
> > convert to coco
>
> use
>
> > ive taken out the pcb that was in the case that was hooked up to the
>
> drive
>
> > I have the ribbon cable to hook to the drive and the coco
> > my issue is
>
> I need to know how to get power to the drive,the power
>
> > connector is a 4 pin
>
> connector
>
> > thanks guys for all ur help
> >
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Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
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Genes Web page <http://geneslinuxbox.net:6309/gene>