BTC 5100C...

[y11971alex]

^the stupid box that cost me $60 to ship to Canada




^the stupid box again












^ this is my biggest gripe with the keyboard.  It clearly says "AT" on the sticker visible in the image, but it uses this 240* terminal connector that my Soarer's converter, which orihalcon wired for Set 3 scan codes, can't understand! :shock:

http://www.ebay.com/itm/222279535810
^ from this seller, so purchase at own risk :!:

As you can see, the seller included a black connector that isn't included with the package.

[mbbrutman]

I saw these on eBay and I was like "Wow!  Great!  PS/2 mini connector even!"  Imagine my surprise when I opened the box and found the larger 6 pin DIN connector.  Ugh...  what the heck is this oddball?

Short story - I had an original older BTC 5100C with the correct cable.  This keyboard is clearly different even though the labeling is the same.  Where the keyboard connector is supposed to be these keyboards have added a small microcontroller on a daughterboard and the goofy keyboard cable plugs into that daughterboard.  So basically it is an AT keyboard modified to talk to some other system that doesn't use the CLOCK line that the AT uses.

You can desolder the daughterboard and create a proper cable for it.  But as it arrives in the box it is definitely not for an AT or PS/2 system, and the cable that comes with it is useless - it only has 3 wires (not counting the shield ground) wired though, which makes me suspect it might even be serial.