2021年5月8日
Laser filament sensor for 3D printer. the idea is to compare the movement of extruder to the movement of filament.
https://www.pandapi3d.com/product-pag...
https://hackaday.io/project/179457-la...
if it detect the clog or runout,it will set the output signal line to zero voltage which tell the mother board to pause printing. so it works with all other motherboard which have run out connector