Denford Software & Machines

I was wondering if anyone has any suggestions as to where to get / how to make membranes for the (later?) Desk-Top Tutor

Any suggestions as to who / which company may have made them in the first place?

Thanks for any time / guidance / suggestions.

Did think about just using an thick heat laminated sheet as a raf way of putting an expanded custom keyboard.

{I've not got into wiring it up yet, but the plan is to use it with my lathe Denford Orac, mill, router and plasma cutter via linuxcnc..... thats the pipe dream.... }

understand its a DB25 connector wired as RS-232

this may be useful to someone, in finding the hex codes output from a Desktop Tutor.

Note I used 9600 baud, 8 bits, no parity, 1 stop bit (I am hoping that is correct for the keyboard....)

{{CORRECTED.....}}
a hex code is issued via serial interface for a button press and another for button release (hence 2 numbers are shown for each button in hex (0x__) and DEC