Flipped Raspberry Pi Zero 2 enclosure for Einsy RAMBo Board

I installed a Raspberry Pi Zero 2 W shortly after they came out but found it ran a bit hot, around 66°C at idle because there is limited air flow to the CPU since it faces the Einsy RAMBo board.  I worked up a design with a fan for improved cooling, but then Chris' Basement pointed out that only the 4 pins are needed in the standard install and it dawned on me I could simply flip the Raspberry Pi Zero 2 so the CPU faces out!

Flipping the Raspberry Pi alone dropped the idle temp to around 61°C and adding a basic aluminum heatsink dropped it to around 51°C.  In addition to the temp improvements, you also are finally able to see the activity LED on the board so you can see when OctoPrint is done shutting down etc. 

NOTES:  

• This requires the pins be soldered sticking out the back of the board instead of the traditional front location (see photo).  Best to start with a new Raspberry Pi Zero 2 or just have good small component soldering skills (which I lack).  I used 15mm pins, which are much easier to find, and they were more than long enough to fit.
• The screw for the Einsy enclosure door must be installed before installing the Raspberry Pi Zero 2.