Klipper Input Shaper
Added 2021-02-27 07:28:20 +0000 UTCSo one of the special features in Klipper that intrigues me is Input Shaper. If you’ve heard of S Curve acceleration in Marlin this is it’s much more powerful cousin.
To make it sound simple you can either print a specific test object at fast speeds and then use some math to calculate how much resonance your axis has and then input that value into Klipper or you can install an accelerometer to do the measuring for you.
This little ADXL345 gets wired from the Pi and then attached to each axis and Klipper runs a test to measure the resonance of the axis by simulating some extreme moves.
Basically witchcraft. In fact it’s already done a lot using the manual method on the stock MK3s. Currently printing with 3,000 acceleration at 60mm/s on each axis with little to no ghosting which means faster print times and the print quality is actually better than my slower profiles.
I mean check out the before and after test at 100mm/s with increasing acceleration. The top is 7,000mm/s acceleration.
