Hey fellow printers! I'm currently working on a new delta project wich is based

3D Printing
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1

Hey fellow printers!

I’m currently working on a new delta project wich is based on the Atom 2.0. I’m still figuring out what auto bed levelling sensor to use, and I’m getting no further.

The Atom itself uses it’s nozzle with to probe, wich levers on to a microswitch. I think the benefit of this is that, even if your nozzle expands at certain temps, you always have the perfect distance from nozzle to bed.

As I’m going to use Duet electronics, I also saw the IR sensor. What are the main advantages using this over an inductive sensor? How accurate is it?

What do you recommend and why?

Thanks,
Andreas

2

Nozzle all the way. IR sensors are sensitive to lighting conditions in the room, material reflectiveness, etc.

3

Is a microswitch so accurate then?

4

Microswitches are amazingly accurate.

https://www.youtube.com/watch?v=bnuGDhxiaF0 – The whole video, this mechanical microswitch only varies by 0.02mm – That’s BETTER than 0.0001in that the most machine shops will tell you they can do.

Additionally, modern firmwares will continue pressing the microswitch until it’s within a specified accuracy.

5

I see, and how would you configure that then? Because when you heat the bed with the nozzle, that is below your 0 point already actually… Right?

6

The firmware has an offset parameter.