Summary Prusa MK3S electronic box for: Original Einsy Rambo Board Raspberry Pi 4 2,5 inch HDD 2x DC/DC convertor (24V to 5V and 24V to 12V) 9x Optoisolated MOSFET switch for vent controll, LED strip, Print head light (second dc/dc and 6x MOSFET module placed on first holder, 3x MOSFET module on second holder) Housings for dupont connectors for external connections On raspbery PI 4 the SD card is used for boot partition only, all other is on SSD, connected via USB/SATA converter 8 pins used for Waveshare touch display (+5V, +3,3V, GND, TP_SI, TP_SO, TP_CS, TP_IRQ, TP_SCK) 1x hdmi output dtto 9 GPIO pins used for output to MOSFETs (GPIO 18 for Gcode SuperLaserController plugin for octopi, GPIO 5 for vent - controlled by PID, temperature reads from processor, GPIO 6,12,13,19 - Led strip R,G,B,W, GPIO 16,26 - Print head light ring (digital led, the white only I don't found), GPIO 20 - enclosure vent GPIO 21 - input from Humidity and temperature sensor (enclosure) Pins for Einsy Rambo comm. (header J19) GPIO 14,15 (J19/6,8) - rxi, txi, GPIO 22 (J19/13) reset printer, GPIO 23(J19/14) - power loss signal CSI - camera USB - second camera for print head USB - Sata converter BOM: USB to SATA - http://s.click.aliexpress.com/e/doQTUxhq type.04 FAN - http://s.click.aliexpress.com/e/s5JVuVVI DC/DC converter - http:// s.click.aliexpress.com/e/tsSxhIWy MOSFET module - http:// k kiklhorn Prusa MK3S Einsy Rambo Raspberry PI 4 with 2,5" SSD VIEW IN BROWSER updated 29. 9. 2019 | published 27. 9. 2019 3D MODEL ONLY