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This website contains information on building and using a home made 7 key chording keyboard.
I have been using this device or one of its predecessors since the mid 1980's, by 1995 it has been a full function chorder and my primary keyboard with both Herbert, my wearable computer and conventional desktop machines.1) With the current version the chorder is now a usb keyboard and detected as a usb keyboard by the host computer. This change has been made possible as a result of work done by Mikkel Holm Olsen on the SpiffChorder. As a result of this change, any device that can support a standard usb keyboard should be able to use this alternative keyboard by just plugging it in.
/!Some of the instructions found here involve using sharp tools and soldering irons. We make no claims as to the safety of such activities.!/
Each project lists contact information for the person who created or maintains it. Please use that information when inquiring about a particular project.