Teensy in a Type-F - Pinouts not matching diagram?

[OfTheWild]

Looking for someone to point me in the right direction here. I'm in the middle of cleaning/restoring, and adding a Teensy 2.0 to an IBM Type-F that has the AT plug into a connector like this: (courtesy of "Chloe" from this thread)



So i took out the ohm meter and found the corresponding locations on the plug itself based on this diagram...

The plug wires are:
Brown = #4 GND
Red = #5 VCC (+5v)
White = #2 Data
Black = #3 ?
theres also a separate earth wire thats screwed to the plate that goes to the outside of the plug "PE"




I was all gung-ho till i hit that #3 pin out and now i'm not sure its even correct.

[fohat.digs]

I don't know, but never trust color.

I have never direct wired an XT, but for the 122 it is:

Black   = +5V
White   = Ground
Red     = Date
Yellow  = Clock

The positions on the socket that you show should be the same, because you can plug the XT into the same socket as a standard DIN on the Soarer's/Teensy and it works fine.

You did notice that that diagram is for the socket and not the plug, right?

PS - ignore #3 except for the rare keyboard that needs the "reset" or whatever it is

[OfTheWild]

You did notice that that diagram is for the socket and not the plug, right?

   )

ok then mirrored... my connectivity testing resulted in:

Brown = VCC 5v
Red = GND
White =  Data
Black = Clock

 

Do i need to connect the "PE" wire to something on the teensy or is it not required anymore?

[fohat.digs]

Do i need to connect the "PE" wire to something on the teensy or is it not required anymore?

I don't think it is needed. I have never connected one, but if there is a ground connection in a cable I usually try to hook it back up to where it went before.

[Melvang]

I would like to concur with the never trust colors.  Especially with IBM.  I have heard of someone pulling apart two XTs, at the same time and both boards had different colors patterns.

[OfTheWild]

Yes, agreed, that is why i used a multimeter and verified them.

[OfTheWild]

And here we are, typing this post with my "new" Type-F with a Teensy 2.0!

Process:

1. Take it apart and clean it. Chloe's thread
2. Sand plate, prime and paint to my liking.
3. Using the ohm meter on my multimeter, i identified which wires went to the pins on the AT connector as per log above
4. Soldered the wires to the correct ports on the Teensy per Soarer's thread
5. Loaded the hex file from soarers zip that matched the teensy board which in my case said ATMEGA32U4 CHIP on the packaging
6. Plugged it in and it works.

Now i just need to figure out how to change some key mapping and build some function layer stuff so its actually usable lol



flash=on so you can see the funky teal color. I will make a custom cable to match.

[fohat.digs]

Now i just need to figure out how to change some key mapping

Wcass describes an easy clean method in post #560 of Soarer's thread.

[OfTheWild]

Now i just need to figure out how to change some key mapping

Wcass describes an easy clean method in post #560 of Soarer's thread.

Ok cool, thanks. I will play with it some more later!