Laser Filament sensor

For the Laser Filament sensor holder,
more detail about this sensor :https://github.com/markniu/Laser-Filament-Motion-Sensor
This is an independent laser motion sensor to sense filament clog or runout.

if it detect the clog or runout,it will set the output signal line to low or high voltage which tell the mother board to pause printing. it works with the motherboard which have run out connector.

What makes it specials?
It compares the movement of extruder and filament at the same time.that means you do not need to worry about how long of the travel length and how much of the travel time in non print moves while printing
There is a micro controller on the board that read the sensor and process the algorithm instead of directly by motherboard that process this with the lowest priority and not fast enough sometimes
For it no needs to send digital signal (0-1-0…) during movement all the time with the long line beside the line of motor,so it more stable in hardware too.
This tra