[sdiy] 61 Note Keyboard from Electronic Goldmine

[Scott Stites]

Thank you Roman!

I haven't yet gotten hold of a digital camera to take pictures of the thing.  It
should happen this weekend.

Cheers,
Scott

On Fri, 20 Jun 2003 10:21:45 +0100, Roman wrote:

> 
> Your asssumptions are correct.
> This is velocity sensitive keyboard, as stated in Goldmine catalog. Scanning
> circuitry scans twice more contacts than there are keys to determine travel time
> between first contact closing and the second. The faster key is hit, the shorter
> the time.
> Aftertouch however is usually made with resistive strip laid below keys, more to
> keys front than key contacts. When key is pressed, resistance of this strip
> changes. This can be conductive rubber on 2 long contacts, or some forky style
> contacts etc.
> 
> Roman
> 

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