E3D hot-end attachments

Simple combination fan shroud:

• basic fan shroud for fin cooling
• bracket for mounting 30mm blower ("sideways") fan for print cooling
• snap-in housing LED light ring (fits Adafruit 16-element NeoPixel)
• mounting tab for postage-stamp sized MicroDuino Core (to drive the LED ring)
• bracket for mounting other gear - ostensibly a Z-probe

Designed to fit underneath the extruder carriage of my Revolution XL. Might not work on other printers, depending upon clearances.