stepper acceleration arduino

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schematic = 1:08
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Hey, thanks for sharing that video . Very interesting library and sketch !!!!
I may use it . In a next Pj. So far I have tested in an Arduino nano, with FULL STEP (at the moment ) and sometimes I got strange non smooth jumps in the acceleration / de acceleration ramps . Do you think it is due to poor CPU speed capability or due to not using Micro stepping 1/16 factor (example) ? I will continue investigating about it . Regards !

joseluism.
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Acceleration and deceleration must be done with a sigmoïd curve. But the arduino is too slow to make the calculation of delay between each steps at high speed. I made it with an array

maniasoft
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If i put a joystick. Can i control with a joystick and have a ramp like a example 2?

ESTUDIOSSR