Cheap Endoscopic Camera Helps Automate Pressure Advance Calibration
1 min read
Summary
To automate the calibration of pressure advance on his 3D printer, Marius Wachtler attached an inexpensive endoscope camera to the print head of his modified Ender 3.
This allows the camera to capture images of test grids printed with varying pressure advance settings, which are processed using computer vision to find the optimal setting for each print.
While pressure advance compensates for the elasticity of molten plastic in the extruder, affecting print quality at corners and layer changes, automated calibration has downsides on someprinter models.
Wachtler’s innovative use of computer vision offers a cheap and easy way to perform this kind of calibration, while also allowing local modelling for greater flexibility.
