SMD Model F controller based on TH Xwhatsit design. ('custom' variant)

This variant has an additional shift register, for custom projects, to support up to 24 columns, by manual wiring.

For other variants see:

• https://github.com/purdeaandrei/SMDModelFController
• https://github.com/purdeaandrei/SMD4704KishsaverClassModelFController
• https://github.com/listofoptions/TH-XWhatsIt

Images

Origins and license

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.