Core One Secondary PSU mount
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This is a mount for a 300W secondary PSU to the back of the Core One.
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Updated at source:
Model information
- Source
- Printables
- Category
- Prusa Parts & Upgrades
- License
- Creative Commons — Attribution — Share Alike
This mount allows you to attach a 300W secondary 24VDC power supply to the back of your Prusa Core One. I needed this for my chamber heater (link), but I uploaded it separately because it might have more general use.
The mount takes a single AC power in, routes it through a new master on/off switch, and then splits it to feed both the original primary PSU and the new secondary PSU.
The PSU is stabilized at the top using a plug in the accelerometer plug. This plug is easy to remove if you later want to use the accelerometer, and the accelerometer port on the xBuddy case is still accessible. There is also cut version of the plug which allows the accelerometer cable to pass through, but you still have to unscrew the plug nut to temporarily to get the accelerometer connector through the hole.
The Ethernet port is blocked by this mod, so if you actively use that, then this might not be for you.
Bill of materials:
300W 24V DC power supply (https://aliexpress.com/item/1005008936305760.html)
Terminal splitter (https://aliexpress.com/item/1005010517892570.html)
Low-profile C13 power cable extension (https://aliexpress.com/item/1005006756867876.html)
Secondary on/off switch for AC voltage (https://aliexpress.com/item/1005006780774354.html)
Fork terminal connectors. I got mine from a local hardware store, but the SV2-4 from this link should also work: (https://aliexpress.com/item/1005005439161799.html)
A couple of M3 screws + an M3 nut
Installation:
The cables from the extension is cut into the lengths which are required. Make sure to start cutting them a little long first, and then shorten as required. My extension cable came with cable clamps (like the terminal splitter), but the cables will either have to be soldered onto the on/off switch, or you will have to use some appropriate terminal connectors for that also.
The main part replaces the PSU cable cover. Have a look at the Prusa install manual for how to access it: (manual link). You will have to remove the plastic cover below the main PSU and the xBuddy case and then unscrew the old cable cover. Be careful to not pull out the NFC cable, which runs from the plastic cover labelled NFC onto the xBuddy mainboard.