Re: Numeric Keypad to Music Keyboard modification (?)

[Stephen Shaw <stephen@apple2.org.invalid.za>]

On Thu, 13 Jun 2002 19:14:36 -0700, Wayne Stewart wrote:

> Simon Williams wrote:
>>
>> I just got my hands on a numeric keypad for the //e noticed that it
>> doesn't seem to contain any electronics... just a bunch of switches
>> basically.
>>
>> Now this has me excited because:
>>
>> a) I've got a hankering to build a single-octave piano style keyboard
>> input     device so I can play my //e like a synthesizer (humour me,
>> please), and
>>
>> b) My knowledge of electronics is practically non-existent
>>
>> My questions are:
>>
>> 1) If I wired together a bunch of keyboard switches copying the
>> circuit from the keypad's PC board will it function the same way?
>
> Yes
>
>> 2) If yes, can I use any type of switch or would they have to come
>> from an Apple keyboard?
>
> Anything that closes a circuit will work. You could even use knife
> switches, thogh your typing speed would likely decrease a mite :-)
>
>
>> 3) Where can I get the connectors that will mate with the 'numeric
>> keypad' input on the //e's motherboard?

Standard Molex connector, if you are in the U.S. Digi-Key should have them.
Digi-Key are on the Web.

>
> I don't know but it shouldn't be too hard to find someting that'll
> work
>
> If You happen to have an EPROM Burner you can change what each of
> those keys outputs. I rewired a IIgs keyboard to work with a IIe
> and didn't like the clear key working like the esc key so I changed
> it to a Control-X, which is what that key on a IIgs does.

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