Arduino/Xino Enclosure with Shield options

This is yet another remix from an original design by egil (The gift that keeps on giving).

It is a fully parametized enclosure for an Arduino Uno. Designed in OpenSCAD, there are parameters to select either an Arduino Uno, or else a Xino. (Xino is a bare bones Arduino compatible, without USB or power sockets. See https://www.wirelessthings.net/xino-basic-for-atmel-atmega-avr-arduino-compatible-kit )

Other parameters allow for increasing enclosure length and height to accommodate various