jack_freeman47

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Last Notes

2024-06-02 18:26:12

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But your original two posts sounds like you want to setup something that avoids all the switching stuff. If you don't have the stepper drivers and relays that are on a typical 3D printing board, even of you can do RT compute, you still need a ton of relays/MOSFETS/etc. Just cheaper and simpler to have the current klipper + printer board style setup.

2024-06-02 17:24:47

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Sorry the "AC" and linux"CNC" created tangent discussions not related to your original topic. For the original topic, the problem with any microcontroller, even the most powerful Arduino Mega, etc. is the max draw for the whole board. These boards are only designed to send/receive control signals, not to power things. Look up max draw for any of these boards, you will see it's miniscule! So, you end up with complex designs mostly because of power switching.

2024-06-02 15:56:57

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yeah that is why ptfe wires and canbus is a good combo for 3d printers. Only the steppers need RT compute, the rest only needs relays for slower high power switching. That is why in 3d printing boards, only the steppers have their own steppers drivers (compute). In summary, RT compute is only critical for stepper control. There rest of the control problems are dealing with power switching that is higer than microcontroller specs.