I love Marlin Firmware. What they have managed to squeeze into the 8bit 16mhz microcontrollers is impressive. But what is even more impressive, is their documentation. The Marlin documentation is far and above anything I have seen for an open source project. In addition to great documentation, they provide some very useful tools. Like the K-Factor Pattern Generator for calibrating Linear Advance in Marlin. I wish Duet provided a similar tool, as I find it invaluable for calibrating your pressure advance settings. What I have managed to do, is use the developer tools of the Chrome browser to edit the javascript and modify a few things to make it work. Why go through such lengths? Well, for a direct drive extruder the calibration values for duet are very low, and very sensitive. how sensitive? I have found differences in value changes of 0.00002 And because I don't take "close enough" as an answer, I had to dig in and make the script fit the resolution I require...