and build a resistance decade box. replacement conctact boards for the smaller (h=~18mm) thumbwheel switches. PCB thickness: 0.6mm or less.
There are two versions of the board: BBM : break before make and MBB : make before break.
Design made using SprintLayout6.
Credit for the make-before-break pad shape idea goes to Dave @ eevblog.com forum. Thanks!
Gerber file directory contains multiple versions of the board: single versions, optimized for typical under 50x50mm prototype orders, single and mixed BBM&MBB types.
(c) 04.2016 by Piotr Zapart www.hexeguitar.com
License: Creative Commons - Attribution - ShareAlike 3.0 http://creativecommons.org/licenses/by-sa/3.0/