Upgrading My CNC Capabilities - CNCjs

After I inherited a non-working CNC 6040 CNC machine, I have been on a journey learning about VFDs, Spindles, Water Coolers, XYZ alignment, and workpiece clamping!
To date, I have managed to restore the CNC machine sufficiently to work with wood and metal, and now I want to expand the range of things I can make. To do this I need to address one of the limiting factors. I have many projects which will need custom circuit boards made. The tolerance and precision needed to make these boards are very fine. For example, the thickness of the copper is less than 1mm and this thickness can vary across the board.
In addition to this, the bed or wase-board of the machine may have imperfections. While this is not an issue when working with wood or metal (I simply plunge slightly deeper into the waste board), a circuit needs a consistent depth of cut. This ensures traces are isolated and the cuts are not too deep.
So far, I have been using Universal G-Code Sender (UGS) to transmit the generated G-Code to the machine. This has worked very well to date. However, I need to be able to probe a blank board in multiple locations and compensate for any inconsistencies. As far as I'm aware, there isn't a plugin for UGS that can do this.
After a bit of investigation, I came across CNCjs. CNCjs is a web service that can be installed onto a Raspberry Pi and send G-Code to the machine. In addition to this, I found a plugin that will automatically probe a circuit board and apply the height compensation to provide a consistent cut across the whole job.
My installation instructions theiqworkshop.com/upgrading-m...
The official CNCjs installation instructions cnc.js.org/docs/rpi-setup-guide/
The plugin to probe blank boards github.com/kreso-t/cncjs-kt-ext
00:00 Intro
02:51 Parts
03:05 RPI USB Booting
04:28 OS Install
04:52 First Boot and Finalise
05:44 CNCjs & Plugin Installation
07:55 Simulate Probe
08:33 Summary
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