The sensor detects the target height by looking for the reflected light from two separate LEDs to be equal. The two LEDs are positioned such that they reflect light into the sensor at slightly different heights. This allows the sensor to be used most any bed surfaces.
It connects to the Duet family of controllers through a dedicated probe header.
For the advantages and disadvantages of various Z probes types see: Choosing a Z probe
For details on connecting the IR Sensor see Connecting a Z probe
For the full detail on DC42's IR sensor see his IR sensor web page.
Kit Contents
The IR sensor comes with:
1x 3 way Molex SL type header and 6x Molex SL crimps (3 spares)
2x M2.5-0.45mm pitch x 8mm Countersunk PZ screw
3 Comments
Does this IR probe work if using a heated aluminium bed with a 3 mm glass table onn top ofthe aluminium?
Anders Lindström - Reply
I’m guessing you’ve found your answer by now, but for anyone else: the IR probe will generally detect the top of a glass bed, but there may be issues if the aluminium plate underneath is shiny. More info under bed surfaces here:
https://miscsolutions.wordpress.com/mini...
Henrik Bjugård Nyberg -
How many mm higher than the lowest part of the nozzle does the bottom of the IR probe board have to be set?
Thanks
Never mind.. Reading has helped!… It’s 1.5mm, no more than 2mm
Thanks everyone anyway
Paul Donaldson - Reply