Design: https://www.thingiverse.com/thing:2808152

I just wanted to share this design (I am not the author), because I think, it is the single best cooling solution for evenly cooled prints.
You might have noticed that with a directed print fan, overhangs eventually end up messy.
In my case the 270° version of the design fixed this issue well.

The fan in the pictures (blue) was btw printed by an identical smart effector/fan setup...

@dgrat I found the issue. I forgot to set the X/Y offset of my sensor. It was correcting for the wrong spot..

@bricor

I wonder if G29 depends on another command e.g. g30 to create a datum.
Shouldn't be heightmap creation defined in a gcode macro which the user defines?

I use a magnetic heated bed to attach a piece of spring steel to print on. My bed is heating up relatively fast and I noticed that the piece of spring steel is warping excessively because the center of the bed is hot faster than the edges. Is there a way define a rate in °C per second somewhere to limit the heating rate?

I think the checksum calculation is broken again. For the old revision I suggested a fix once..
I think the issue in code looks very similar.

Do you think it makes sense to check encoding in the firmware and reject the file to avoid UB.

@dgrat
I think it might be the coding. I was piping the output of a python script with powershell. Maybe a coding check (warning) in the web-app or firmware would be beneficial.

@dc42

Board: Duet 2 WiFi (2WiFi)
Firmware: RepRapFirmware for Duet 2 WiFi/Ethernet 3.4.1 (2022-06-01)
Duet WiFi Server Version: 1.26

I noticed that the firmware/WebApp seems to crash if I upload and execute this file.
Copying the content with Notepad++ into a new file seems to work.

lin_adv.gcode

An accelerometer would be nice, I guess.

Thanks all for gcode and explanation

@bricor

I wonder if G29 depends on another command e.g. g30 to create a datum.
Shouldn't be heightmap creation defined in a gcode macro which the user defines?

@fcwilt
I thought that is only necessary before starting a print?
Where is written that G29 requires that and why the offset changes?