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hi
i think here is it better instead of my retrofit thread.

the emco vmc100 has a carousel which is turned by the spindle.

i use the original spindle hardware.
i can tap threads and mill. there is a encoder on top of the spindledrive.

with m19 r p i can orient the spindle.

now i came to the point that orient not works for the toolchanger because 2 spindle rotation are 1 positionchange from slot to slot.

could someone help me to get it work in position and velocity mode?

to enable the spindle i have a relay. if the relay open the drive is disabled and i can turn the spindle by hand.

if its enable the spindle is blocked and the pid bring it back to position.

thanks i will upload my hal in a hour

github.com/tuxcnc/SpindleETH

# SpindleETH
Intended for lathe spindle control by Ethernet.
No axes control.

# Hardware
This repository is for STM32F103C8 or STM32F103CB

# Tests
Tested on real machine with 2500 p/r encoder and ~1500 rpm.
Direct to PC's eth interface or thru switch (some switches may not work).

# Improvements
New index_enable philosofy.
The encoder's index signal (mostly named Z) is not transmitted to HAL component (it causes delays and threatens to lose a signal).
Controller sends raw counts and raw counts latched at every index pulse instead.
The component knows the index occured by comparing current and previous latched values.

# Adds
1. PWM output (1 kHz and 16 bit resolution)
2. Digital I/O

# Tools
Added encoder emulator for tests.
Important: Arduino can't turn off ESP32C3 watchdog and resets chips after every two seconds.
If it is problem for you, rewrite code for esp-idf or use other microprocessor.

# Other info
Read comments at the tops of source files.

kn612 wrote:

Is it possible to use stall force tolerance for z axis home and detecting the sheet metal in qtplasmac?  I will add a floating head and a z home switch if its not possible.
 

I'm not sure that could be done using analog without writing a custom component, but I'm no expert on analog.   In my experience you want some kind of floating head so that if the metal tips up or something it will stop the machine plus you can use it to probe the work height.  I haven't tried it yet but you can also do ohmic sensing to detect the material + float as backup.

Hi kn612,

Were you able to get motion with your analog servos as well? PCW was kind enough to send me a 7i97t for testing as well. I will make a pull request to add it to 2.10/master when we confirm it.

Yes, if the input common is a + voltage, those are sourcing inputs.

( it's easy to get confused as sourcing inputs connect to a sinking drivers and vice versa )