[Printer-Box] PSU Silver - Relay Board Cover Mod
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A remix of cover from PSU Silver model by Printer-Box for use with a 4-channel relay board.
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Model information
- Source
- Printables
- Category
- Other Printer Parts & Upgrades
- License
- Creative Commons — Attribution
Design
Inspired by a similar design by Posix, made for a 4-channel relay board from AliExpress (if not available anymore search for 1 2 4 8 channel 12v relay arduino optocoupler).
I wanted to control both the enclosure circuits (enclosure fan, Einsy fan and LED strip) and the MK3 PSU itself, which is a high voltage circuit. Obviously no problem for the relays, but to keep things a little safer designed a conduit hole separate from the low voltage circuits (the medium-sized in the top left corner), and designed a cover for the relay board to keep myself from accidentally poking a live circuit when I do work on the printer.
The smaller hole is for board power supply and control inputs.
Since I have an actual 60W PSU below the cover, I've designed the covers with ventilation holes, but I've also rendered a version without them.
The source FreeCAD file is available for any necessary modifications.
Printing
Printed in Prusament Orange using 20% infill with snug supports on build plate only.
Post-processing & Assembly
The board is lifted from the cover using four 5mm M3 standoffs and secured using the respective M3 bolts.
After leading all the wires though the conduit holes, cut to length, tin or crimp them and connect appropriately.
Be sure to work on live circuits only when they are unplugged from mains.