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

[Bill Pierce]

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

 

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-----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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