V-minion speed

Does anyone know how can I increase the max speed with input shaping on Y, at the moment it is 9400, the belts are tight and vibration look okay. What other thinks could I tweak? Thanks in advance
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10 Replies
Prav
Prav•7mo ago
how do you attach the adxl to the bed? @Sam because 1e3 scale of the vibrations is really low
loczek
loczek•7mo ago
@Prav
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loczek
loczek•7mo ago
How are you mounting yours?
Prav
Prav•7mo ago
i don't have a minion, but for my bedslinger i have a mount with magnets i attach in the middle of the bed. but if your mount is rigid it's good as well. did you make sure you are measuring with the right adxl? and not for example one in the toolboard?
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loczek
loczek•7mo ago
Yeah, 100% using on Y @Prav what are your graphs like?
Prav
Prav•7mo ago
https://yko.im/eU73.png https://yko.im/jQrI.png also 180mm bed slinger with eva toolhead but completely different design, not very useful i'm afraid :( i can't really provide too much insight into minion, but general stuff to consider. 1. try placing it on the ground for the test, unstable surface can have big effect on IS results 2. release all the tension from the belt and tighten it 1 turn at the time running resonance tests after each adjustment, maybe the belts are too tight or too loose.
Prav
Prav•7mo ago
as your results are now, your entire graph would look like insignificant noise on mine. which means that either adxl doesn't pick up the vibrations, or they are super damped by something. https://yko.im/r8D0.png
Prav
Prav•7mo ago
you can also run MEASURE_AXES_NOISE and ACCELEROMETER_QUERY commands to verify it's not a wiring problem
loczek
loczek•7mo ago
Not sure what you mean with this graph and red arrow, could you explain it more?
Prav
Prav•7mo ago
https://yko.im/-ati.png graphs on the Y axis have a scale, 1e3 is a scientific notation for times 1000 1e4 for times 10000 so if you compare our graphs, the vibrations recorder by your printer are ~10 times smaller and would be basically invisible if both graphs had the same scale, hence the rest of my message 🙂
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