Introduction: Second Life of MFM Hard Drives - Iambic Telegraph Key

timelesson.blogspot.com/2010/02/second-life-of-dead-mfm-hard-drives.html

Do you remember a MFM hard drives? Not too fast, but very large - 20 Mb in the 5 inch rack, it was a something special! Times gone and those beautiful drives decided to rest in peace. In peace? No way!

One note - if you don't know wha-da-heck is Iambic Key, visit Wiki: en.wikipedia.org/wiki/Telegraph_key As for me, this key is my way to communicate World. Our Old Good World.

Step 1: Extracting Heads From Dead Drives

There are best-of-the-best bearings inside. Because it is.

Step 2: Cut Off Fag End


Step 3: Breadboarding and Making the Plastic Base.

Breadboarding - making something using wife's bread board en.wikipedia.org/wiki/Breadboard. In my case board was slightly rustic.

Step 4: Assembling and Assembled Views

 

Step 5: Comunicating Using New Keyer






Comments

author
wcgems (author)2013-04-14

What are the pins on the front from? Is the speed adjustable? The two wire on top, what are the connected to on the top and bottom?

author
Arsenij (author)2011-03-06

Good idea!!!

author
jeff-o (author)2010-02-23

Have you got any videos of your telegraph key in use?

author
Andy UU1CC (author)jeff-o2010-02-24

Well, I'm trying - never did it before. Maybe hour or two later.

author
jeff-o (author)Andy UU1CC2010-02-24

Cool.  I suggest typing out a message in Morse code for us to decode!

author
Andy UU1CC (author)jeff-o2010-02-24



Enjoy!

author
jeff-o (author)Andy UU1CC2010-02-25

Hey, that sounds really nice!  Of course I have no idea what the message was.  ;)

About This Instructable

6,567views

12favorites

License:

Bio: Partido Geozentrista de los Martianos Intruderz
More by Andy UU1CC:Second Life Of MFM Hard Drives - Iambic Telegraph KeyGlowbugs - Homebrew Tube Amateur Radio Transmitters and Receivers
Add instructable to: