This is the third in a series of posts about a Spanish Spectrum+ 128K. The first covered the main Spectrum+ 128K Toastrack, and the second it's plug in keypad.
custom keyboard membranes for the Spectrum+ made. I am running low on those, not sure if I'll order any more as the quote from the manufacturer has tripled, and they were already very expensive. I designed these with a 5x13 matrix and a single 18 way connector, those meant each key was individually detectable. This was useful for the USB keyboard as many of the Spectrum+ membranes would fail due to age, and the Spectrum+ used the same 5x8 key matrix as the original Spectrum, with the extra keys setup to press two keys at once (i.e. the " key was actually symbol shift and P pressed together).
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