This controller only supports new style card edge connectors only, and it requires the side of the card edge connector to be cut off, and the pins be bent 90 degress.
This is a variant of the controller that also includes an additional expansion header, designed especially for 3278 A02 / 3279 2C keyboards with a top panel, sporting additional leds and non-capacitive push buttons. See purdeaandrei/CompactBeamSpring#1 for some details about these keyboards.
See top_panel_modifications.md for instructions on how to connect this controller to the top panel of your 3278 A02 / 3279 2C keyboard.
- https://github.com/purdeaandrei/CompactBeamSpring
- https://github.com/purdeaandrei/SMDModelFController
- https://github.com/purdeaandrei/SMDModelFController/tree/extra_columns
- https://github.com/purdeaandrei/SMD4704KishsaverClassModelFController
- https://github.com/listofoptions/TH-XWhatsIt
This project is based on the Through-hole xwhatsit by listofoptions, which is un turn based on the capsense controllers by XWhatsIt (Tom Wong-Cornall). original liscencure holds, as well as CERN OSH (compatible license).
original implementation of Tom Wong-Cornall's controller documented here
http://downloads.cornall.co/ibm-capsense-usb-web/ibm-capsense-usb.html
Working theory of operation is under the previous link.