Zero3w enclosure

This is a compact enclosure for the Radxa (or Rock) Zero3W that includes a maskrom plunger, and snap-on lids (choice of solid or opening for GPIO access). The case allows for insertion of a 30mm x 30mm x 10mm fan powered by on board 3.3v or 5 vdc. Design allows for addition of 4 finned heat sinks:
1. 20mm x 30mm x 6mm to be inserted below board to cool eMMC.
2. various heatsinks mounted on top of board hot components.

There is also a plunger to depress the maskrom button accessible on the bottom of the case.

Caution: only run the fan from case 3.3v (pins 1 or 17) or 5.0v (pins 2 or 4) and any ground. Other GPIO pins do not have sufficient power to run fan; you'll BREAK the GPIO pin. Fan air routed over fins of all heatsinks. My testing under load lowers temps by 20 C.