Analogue-sequencer

Nice work, Colin!  Thanks for making the switch PCB that flexible.
When will the next set of boards be available?

- Robert

>> > The current P3 switch boards will take standard tact
>> > switches as well as the Multimec and Maplin parts, and
>> > there are a huge range of different caps for those.
>>
>> Are you talking about pin geometry here, or are there
>> electrical issues?
>
>I'm talking about pin geometry.
>Have a look at this image -
>http://www.colinfraser.com/p3/images/Switch%20choice.jpg
>
>You can see that each switch location on the PCB has 8 holes.
>2 for Maplin switches, 4 for 'standard' tact switches, and 4 for the
>Multimec switches. The tact and Multimecs have pairs of pins connected
>internally, and just use 4 pins for stronger mounting.
>
>> What does 'tact' mean? Is it a brand, or a some standard for
>> fixing caps to a button?
>
>It's short for 'tactile', meaning that they give a little click as you press
>them to provide tactile feedback I guess.
>They are made by ALPS, Omron, Diptronics, E-Switch, and others.
>You'll find them in lots of electronic gear, including the TB303 and TR606.
>
>> Do you think the Maplins last long? Can they take a good
>> amount of beating?
>
>The Maplin switches are of very similar construction to the keys in old 80's
>home computers, and were used many years ago in 'proper' keyboard kits for
>computers that had membrane or rubber keyboards, such as the Sinclair ZX81
>(Timex 1000).
>I have a number of computers from this period, and have never had to replace
>a key switch.
>They should easily last a long, long time.
>
>Cheers,
>Colin f
>
>
>
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