[sdiy] keyboard contacts

[Tim Parkhurst]

VERY nice work! Fabio, I think you get the Uber_DIY award for the month of
August!!

Tim Servo

> -----Original Message-----
> From: fmg [mailto:1984 at softhome.net]
> Sent: Tuesday, August 19, 2003 6:58 PM
> To: synth-diy at dropmix.xs4all.nl
> Subject: [sdiy] keyboard contacts
> 
> Hi All,
> 
> Thanks for the suggestions.
> 
> BTW, with a metal sheet folding machine I cut and partially mold the
> contacts. This machine was a big help and saved me a lot of time. I
> made +100 switches this morning and used a few for some test.
> 
> Here how they look:
> 
> http://www.geocities.com/eqys/var_tmp/k_contactos.jpg
> (no camera at the moment, all images scanned)
> 
> This is an improvised "stress test machine":
> http://www.geocities.com/eqys/var_tmp/k_estres.jpg
> (a similar one I left running at work this morning, but the
> contacts there have gold-plated pins at ends)
> 
> The travel is 9mm, 6 cycles per second (approx):
> http://www.geocities.com/eqys/var_tmp/k_estres2.jpg
> (1/2 million notes a day)
> 
> In another test the switches are in a closed glass flask pending
> a few milimeters of water with ferric chloride:
> (can't put this in the scanner)
> 
> Now I'll wait for 2 or 3 days and then see what happened with them.
> (hope the "stress machine" let me sleep tonight)
> 
> Fabio Gonzalez



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