[Grbl_Esp32 Issue#634] PCB or Engraving Milling Probing

#1 – MitchBradley 于 2020-10-09

One consideration is that surface maps can end up using a lot of RAM, depending on the precision and granularity of the map. The senders that implement the feature all run on PC-class machines, or at least a Raspberry Pi, which have an enormous amount of RAM compared to an ESP32. The total RAM on an ESP32 is about 300K. Under certain workloads, expecially when all of the WebUI features are present, the free RAM can drop down to the 10K range. Compare that with a PC running a sender, which will usually have several gigabytes of RAM. Of course, not all of that will be available, but the amount of free RAM will exceed 10K by a huge factor.

#2 – leadgtr7 于 2020-10-09

I had imagine this being implemented more like an autobed level routine on a 3d printer. My thought would be the user could pick a certain number of points (say 5×10 or whatever really). Then a table of x and y with z offsets could be used to bi linear interpolate.

I didn’t think something like that would take much resource as most 3d printers running even 8 bit marlin can do this.

But I would really like the height map to be able to be stored and applied to a file via a button. Use case would be trace isolation engraving in one file and uv solder mask removal in another file both modified by the initial height map file

#3 – MitchBradley 于 2020-10-09

Even so, it is probably better to do it in WebUI instead of in the controller

#4 – leadgtr7 于 2020-10-09

That was where I would like it to be. Not sure if this was the right place for it though

#5 – MitchBradley 于 2020-10-09

The WebUI code is in https://github.com/luc-github/ESP3D-WEBUI , maintained by a different developer

#6 – leadgtr7 于 2020-10-10

I have put an issue with the ESP3D-WEBUI github page