search

markniu / Bed_Distance_sensor

Auto bed level with High resolution distance sensor
281 stars 28 forks source link

Poor first layer with bd sensor mesh #184

Closed josh-hutchinson closed 1 month ago

josh-hutchinson commented 1 month ago

Hello, I have my bd sensor mostly set up and working. The only issue remaining is that the mesh it creates does not seem to be providing a good first layer. I am seeing good first layer on one side of the print, but on the other side there are gaps between the print lines. Looking at the generated mesh, the sensor has measured a low spot where the gaps are appearing, so it does see the unevenness in the bed there.

I wonder if the bd sensor isn't being accurate enough to get the nozzle offset correct? My first value returned is around 350 which is under the 400 as per the docs, although I see a first value around 100 is better. Would lowering the bd sensor likely improve my first layer, or is it more likely to be a different issue?

Thanks!

josh-hutchinson commented 1 month ago

I was able to resolve this issue by adding adaptive_margin to my [bed_mesh] section.

tpups commented 1 month ago

Well it turns out adding the margin didn't fully fix my issue. I'm back to considering lowering the bd sensor. Maybe it's accuracy isn't great if the first reading is around 350?