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arthurwolf
So are you saying a firmware designed for an 8-bit mcu, running on an 8-bit/16-20mhz mcu, will be as smooth in it's step generation and as precise in it's motion planning and execution, as a firmware designed for a 32-bit mcu, running on a 32-bit/120mhz mcu ?
Exactly. And if your firmware runs on 32-bit only, it has a flaw.
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arthurwolf
I'm not even sure I understand what you are saying.
Obviously. If you had said 32-bit controllers are faster and allow higher printing speeds on more complex setups, I had even agreed. But you don't and use wobbly words like "smoother" or "better" instead.
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Traumflug
Perhaps some of you remember earlier high-end CNC machinery. Many of them had a 3 MHz 8-bit CPU and they worked just fine.
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And that's exactly the reason why high-end CNC machinery today still uses 3Mhz 8-bit MCUs of course ...
Actually I know quite a number of machining shops which still run these 30 year old controllers. Because it's simply pointless to replace them. Except for saving electricity and some workshop space, perhaps.