Mini Sustain Pedal for APC Key25

This is a mini sustain pedal for my APC Key25 which has only an ugly positioned button. I installed a 3.5mm Jack into the APC and wired it parallel to the Sustain button. The pedal itself is laser cut, it uses two 1cm diameter springs and a button I found in somewhere in the electronic lab.

• Pictures of the mini sustain pedal
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  The pedal itself

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  The pedal from the side

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  The modified APC key25

Files for laser cutting

nkscape file for cutting from 4mm plywood