qtdragon pins, RPM and docs

Hello!

I just finished configuring a 6040 with LinuxCNC and the last step is getting the UI working. I really like the qtdragon one, so that's the one I went for. I am having some issues tho. I am using the Debian 10 buster image updated with the linuxcnc-uspace 1:2.9.0~pre0.3770.g7f8ea7196` and my config files are here: github.com/coredump/linuxcnc_configs

- I got the hy_vfd pins connected enough to get the power, amps and RPM to show on the interface, but for some reason the RPMs are multiplied by 60 (so at 100 hz I get 6000 rpms on the spindle.0.speed-in pin but the UI displays 360000)
- In past versions I think there were pins for the axis leds, but on this current version they seem to not exist, or at least the names that are described on the documentations (both the github one and the linuxcnc one) don't work (led_home_x, etc)
- Is there a way to run the qtdragon from the github repo instead the one that comes included on /usr/share/qtvcp... ? I cloned the repo and passed the UI file path, but qtvcp complains about included UI files that are on the same dir, but apparently don't work that way

But I would have a load to get the scale component into my config right? I don’t have any afaik. Also I can read the right values on the pins, it’s only the UI that not.

The only thing is that if `spindle.0.speed-in` isn't connected to the vfd speed output, it won't show anything on the UI, but I didn't find any specific pin for the connection

Ahh good catch. Should have checked the spindle docs.

Yeah I only get RPM from the vfd, so I will have to scale. What makes sense because if something else is getting the speed from the speed-in pin, it's getting it wrong

1) qtdragon uses the halglib library to directly read the spindle.o.speed-in pin and multiplies it by 60 to get RPM.
I agree you VDF is probably scaled wrong.

2) yes the new version reads status for LEDs directly so no HALpins for most.
3) if you put the repo qtdragon.ui and qtdragon_handler.py in a folder named qtdragon in your config folder, Qtvcp will uses those 'local' files.
Probably have to add the image folder too.
(keep in mind this is a different version of qtdragon - Jim's personal version so some things are quite different)

Chris

Hello,

my solution.

Machine.hal insert:

loadrt scale count=1
addf scale.0 servo-thread

Own by me Spindle.hal insert

setp scale.0.gain 0.016666
net spindle-speed-scale vfd.spindle-speed-fb => scale.0.in
net spindle-speed-DAC scale.0.out => spindle.0.speed-in

Maybe it will help one or the other.
Sorry for my bad English.

Greeting Frank