The 0-10V modules work, but we’ve had some folks encounter difficulties with them on their particular VFDs. You’ll provably want to continue this thread when you get the module, and get more help.
The 0-10V module needs 3 GPIOs, and the FluidDial Pendant needs 2.
Only 4 GPIO are available on the Jackpot, so you will not be able to run an 0-10V spindle and the FluidDial pendant at the same time on a Jackpot.
The isolated RS-485 module only needs 2 GPIOs, so with that interface it may be possible to have both the spindle and the pendant. If your spindle has an option for RS-485 control then it may be possible to use both spindle and FluidDial on a Jackpot. You’d need the isolated RS-485 module instead of 0-10V module.
I don’t have either spindle type to test with, so I can’t confirm it works. (I’ve tested with an adapter board of my own making on one of my machines, and FluidNC accepts the config- but I don’t have the spindle to test with.)
That test board setup is what @Jonathjon is describing- he has one of my early prototypes.
You may instead want to track the activities of our own @jeyeager , who is experimenting with a pendant type interface that works entirely over WiFi, not needing any GPIO, nor any cables to the Jackpot. I’m considering building one of those myself.
For details on that, see the thread here: