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Short answer YES. You can run it from a different power supply at a higher voltage. Also it has a PC817 Optical isolator (for some reason) therefore the second power supply and your main board should not be electrically connected at all.


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and welcome to the Stack Exchange 3D Printing site. Let's look at the specs compared with the requirements. How much power is used by the heated bed? You have specified 120W (12V, 10A). That information makes it easy! On my homebrew printer it is higher, but that seems like a good high limit for a typical i3-style design. So, the MOSFET you propose, ...


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Yes you can, but you should be aware that running at higher voltage implies that the current also increases. Your wiring and connectors to the heated platform have to be able to transport that extra current (e.g. the wires, the ones I got where very low quality, and connectors that came with my Anet A8 where not even rated for the standard load, let alone an ...


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The resistance of the heated bed being too high can not have caused the MOSFET to burn out. Only a too low resistance could cause that. Keep in mind that measuring relatively low resistances (such as the one of your heated bed) is difficult, and if you just used a regular multimeter it might indicate a wrong value (e.g. due to the resistance of the test ...


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You can use the Klipper firmware which accepts an arbitrary number of heaters. Then you can write a Klipper macro which takes one input and applies it to each heated bed (or not, as you prefer). With Klipper you can also add another Arduino and connect it to klipper as well, in case you don't have enough pins on your board: klipper is not limited to ...


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Controller boards Please note (this is not to bash) that RAMPS shields are not the top of the line printer controller boards, investing in a more modern printer board platform (preferably not a clone of a known board), e.g. a 32-bit board might be a better solution. Any board with at least four stepper drivers should be sufficient (you can use the two Z ...


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