Big Einsy Case + forced cooling and RPi Cover

prusaprinters

DescriptionAfter adding a wall mounted alveoONE HEPA filter to my Ikea Lack enclosure I was having problems with over-heating of the Einsy board.  My piggy-back RPi Zero 2 was typically running at >60degC.  More concerning were the random Y-axis crashes.To overcome the heating issue I used @boogie's Big Einsy Case and made a few tweaks to the design:The cover now includes a hole which allows a 38mm flexible hose to be attached.  The other end goes to a corresponding hole in the side of the enclosure.   On the inside of the cover a 40mm, reverse mounted, fan has been added to improve the air flow.The backside of the case has a cut-out to allow the RPi Zero to be plugged in and a cover installed.  Note that the cover is only 1mm thick to avoid any interference with the extruder cable bundle.The case itself has:An additional air vent for the RPiInternal cable tie points for a cleaner internal appearanceAn additional hole on the top near the printer frame to allow for a small cable to be passed through.  In my case I use this for LED lighting power.Slightly reduced USB hole sizeSome minor modifications to reduce overhangs and the need for supports inside the case.Electrically the LED lighting and the 40mm fan run at 24v and are connected to the incoming power cables on the Einsy board.  As a safety measure an in-line fuse is used.Initial testing shows a significant improvement in temperature management.  At an ambient room temperature of ~23degC and an enclosure temperature of ~36degC the RPi runs comfortably <50degC.  The random Y-axis crashes have also stopped.Parts1 x 24v 40mm fan ( 4010 ).4 x M3x16mm pan head bolts4 x M3 hex nuts1 x in-line fuse100mm 38mm ID flexible hose.AssemblyI followed @boogie's instructions but attached the case to the printer frame before mounting the Einsy board.PrintingNo additional instructions.