No, it doesn’t. It just temporally releases the pin, which is stowed and secured by a magnet normally.
If the pin is released, it is pulled out by gravity and pushed back by the bed surface when reducing the nozzle/bed distance. The upper end of the pin then triggers a fork light barrier.
This makes things quite less temperature dependent.
But that is the CR-Touch only I’m speaking about, I’ve never had a BL-Touch in my hands.
According to @LifeOfBrian (he has one running already) the cable between BDsensor and it’s electonic compartment is about 80 mm. the 1.5 m are meant between compartment and MCU.
B.t.w.: The BDsensor depends definitely on a coil, since it is an inductive sensor type. So I’m afraid it would not work very well with my pure aluminum bed with pertinax cover. Nevertheless I ordered one because of curiosity…
I switched from BLtouch to the Biqu microprobe, been loving it. Even according to the awesome chart put together by @Sineos, it scores really well. And it’s demerit for speed hasn’t been the case for me, with tweaking some of the config that biqu put together. I found that by reducing the delay (waiting for the probe to extend) from 0.5 to 0.25 was a pretty noticeable improvement.
Due to its size you might be able to reduce offsets when designing a mount, compared to BLtouch or other similar sized probes. The microprobe is considerably smaller. This of course depends on your tool head geometry.
Biggest challenge I’ve had with it came to designing a mount for the NG extruder when I added a volcano heat block. The stroke length of the probe is very short so you have a pretty small window in terms of what height it sits at relative to the tip of the nozzle such that it’s out of the way when retracted and not pressing oozed filament into the build plate when probing.
That sounds quite good - seems that I’ve ordered mine too early.
that applies to this inductive probe also, leaving me with not enough headroom again. I have tested the GX-F12A and put it on a peeled off ‘first-layer (0.2 mm)’ and had to press it down to get it triggered. That is way to tight.
So I count on the 4mm sensing range of the BDsensor which might reduce to 2 mm leaving me with a headromm of at least 1.5 mm, which I might can handle with my mechanics.
My print head is completely homebrewn and by far not as sophisticated as yours. But the CR-Touch has an X offset only (30mm) and shares the same Y axis.
