Wensi PV layer holder

This OpenSCAD script will generate a simple one piece fixture to hold Wensi's PV layer's PV cell, PCB and supercap. This is using the slightly newer layout and SCAP propsed on the 17th August 2011

Author: Mark Gaffney
Version: 2.2
Date: 2011-09-16

Todo:
add thin infill for hollow sections to improve printability
make slide in PV version
make 2x corner 1 middle tab PV version
make screw post PCB version
make pin post PCB version
make mushroom post PCB version
move holes for SCAP pins (2x dia=0.6+blah separation=~10-blah dist_from_bottom~=2.5-blah dist_from_sides=5-blah) and PV wires to more logcal place, also change to square, triangle or teardrop shape for better printability
remember the SCAP is now a table profile with dia~=10.5

Warning:
there is no top part for this

Changes from previous versions:
2.2
- Change cutout for trapezoidal/pyramidal shape
2.1
- Fixed some vlaues to place the support posts in corect location (up +1mm) scap leads Right +2mm
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