External Floppy Cable

[rubber_jonnie]

Another FB conversation prompted this when somebody asked about connecting the FDD part of the CosmosEx to the external floppy port, to give a B: drive.

So guess what I'm making today:

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I used an existing external enclosure to get the pin mappings I needed looking at the front of the plug, as I couldn't disassemble it:

External Cable.jpg (98.91 KiB) Viewed 1856 times

And then reversed it:

External Cable_2.jpg (99.95 KiB) Viewed 1856 times

As I would be working from the back of the plug.

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I then clamped a new 34 Pin IDC connector on to allow me to buzz out the wires to the plug as per my diagrams:

IDC_Time.jpg (72.93 KiB) Viewed 1856 times

Once I had the 14 wires I needed I trimmed the rest off and began to get my assembly going:

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The end result being:

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Hopefully the pinouts and will help somebody wanting to do the same as me.

Make sure you buzz everything out before assembling to make sure all the connections are good, I had one bad solder joint and a pair of wires transposed.

Happily it's all connected up to my MSTE and CosmosEx and working a treat

[exxos]

Very nice. Ive not built one for like 20+ years.. *somewhere* I have a 5.25" proper floppy drive.. That Pinout must go back to "paper days"

[rubber_jonnie]

@exxos I've had the parts for years, I bought the din connector from you, god knows how long ago.

Connecting up the CosmosEx as a 2nd floppy was the nudge I needed to make it.