Arduino IO Expansion

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07 Jul 2025 07:12 - 07 Jul 2025 07:15 #331435 by vre
Replied by vre on topic Arduino IO Expansion
Can I use this project for 4 analog pot inputs rapid feed spindle and jog speed?
Arguino pro mini will work ? 
How I will connect with PC with ttl2USB adapter or it is better to use leonardo that has USB interface?
What about esp32 will work with this?
Last edit: 07 Jul 2025 07:15 by vre.

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03 Aug 2025 14:05 #332723 by AlexMagToast
Replied by AlexMagToast on topic Arduino IO Expansion
Hi, yes that is possible. I would actually reccommend the esp32 over the Arduino, as if I remember correctly the ADC resolution is better on the ESP.
I only ever used it with USB interface.
If you know what you are doing I guess you can run it in ttl2USB too.

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16 Aug 2025 13:51 - 16 Aug 2025 14:02 #333508 by gundamgear
Replied by gundamgear on topic Arduino IO Expansion
Hello I try to use arduino connector when I set hal file to loadusr arduino-connector it not load and when I start linuxcnc it spit pin does not exist
Error report created by /usr/lib/tcltk/linuxcnc/show_errors.tcl:

Print file information:
RUN_IN_PLACE=no
LINUXCNC_DIR=
LINUXCNC_BIN_DIR=/usr/bin
LINUXCNC_TCL_DIR=/usr/lib/tcltk/linuxcnc
LINUXCNC_SCRIPT_DIR=
LINUXCNC_RTLIB_DIR=/usr/lib/linuxcnc/modules
LINUXCNC_CONFIG_DIR=
LINUXCNC_LANG_DIR=/usr/lib/tcltk/linuxcnc/msgs
INIVAR=inivar
HALCMD=halcmd
LINUXCNC_EMCSH=/usr/bin/wish8.6
LINUXCNC - 2.9.4
Machine configuration directory is '/home/cnc/linuxcnc/configs/test'
Machine configuration file is 'test.ini'
INIFILE=/home/cnc/linuxcnc/configs/test/test.ini
VERSION=1.1
PARAMETER_FILE=linuxcnc.var
TPMOD=
HOMEMOD=
TASK=milltask
HALUI=
DISPLAY=axis
COORDINATES=X Y Z
KINEMATICS=trivkins coordinates=XYZ
Starting LinuxCNC...
Starting LinuxCNC server program: linuxcncsvr
Loading Real Time OS, RTAPI, and HAL_LIB modules
Starting LinuxCNC IO program: io
linuxcnc TPMOD=tpmod HOMEMOD=homemod EMCMOT=motmod
Found file(REL): ./test.hal
Shutting down and cleaning up LinuxCNC...
Removing HAL_LIB, RTAPI, and Real Time OS modules
Removing NML shared memory segments

Debug file information:
Note: Using POSIX realtime
./test.hal:95: Pin 'arduino.din.9' does not exist
7233
Stopping realtime threads
Unloading hal components
Note: Using POSIX realtime



-----------------------------------------------------------------------
Info report created by linuxcnc_info:
The file:    /tmp/linuxcnc_info.txt
can be posted to a forum or a web site like:
     http://pastebin.com
in order to provide information about the linuxcnc
system and configuration.

                Date: Sat Aug 16 20:30:11 +07 2025
            UTC Date: Sat Aug 16 13:30:11 UTC 2025
        this program: /usr/bin/linuxcnc_info
              uptime: 20:30:11 up 1:44, 1 user, load average: 0.24, 0.30, 0.33
     lsb_release -sa: Debian Debian GNU/Linux 12 (bookworm) 12 bookworm
            linuxcnc: /usr/bin/linuxcnc
                 pwd: /home/cnc/linuxcnc/configs/test
                USER: cnc
             LOGNAME: cnc
                HOME: /home/cnc
              EDITOR:
              VISUAL:
            LANGUAGE:
                TERM: dumb
           COLORTERM:
             DISPLAY: :0.0
             DESKTOP: lightdm-xsession
        display size: 1920x1080 pixels (508x286 millimeters)
                PATH: /usr/bin:/home/cnc/linuxcnc/configs/test/bin:/usr/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games

uname items:
         nodename -n: raspberrypi
      kernel-name -s: Linux
      kernel-vers -v: #1 SMP PREEMPT_RT Mon Jan 27 00:10:15 AEDT 2025
          machine -m: aarch64
        processor -p: unknown
         platform -i: unknown
      oper system -o: GNU/Linux

/proc items:
             cmdline: reboot=w coherent_pool=1M 8250.nr_uarts=1 pci=pcie_bus_safe cgroup_disable=memory numa_policy=interleave smsc95xx.macaddr=2C:CF:67:BC:6D:E4 vc_mem.mem_base=0x3fc00000 vc_mem.mem_size=0x40000000 console=ttyAMA10,115200 console=tty1 root=PARTUUID=a27d77aa-02 rootfstype=ext4 fsck.repair=yes loglevel=5 net.ifnames=0 processor.max_cstate=1 isolcpus=2,3 firmware_class.path=/lib/firmware/updates/brcm rootwait
          model name:
               cores:
             cpu MHz:
             parport:
              serial:

Versions:
                 gcc: gcc (Debian 12.2.0-14) 12.2.0
              python: Python 3.11.2
                 git: git version 2.39.5
          git commit: NA
                 tcl: 8.6
                  tk: 8.6
               glade: not_in_PATH

linuxcnc_var all:

     LINUXCNCVERSION: 2.9.4
LINUXCNC_AUX_GLADEVCP: /usr/share/linuxcnc/aux_gladevcp
LINUXCNC_AUX_EXAMPLES: /usr/share/linuxcnc/aux_examples
            REALTIME: /usr/lib/linuxcnc/realtime
                 RTS: uspace
          HALLIB_DIR: /usr/share/linuxcnc/hallib
              PYTHON: /usr/bin/python3

dpkg -l '*linuxcnc*':
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name                Version           Architecture Description
+++-===================-=================-============-=====================================================================
un  linuxcnc            <none>            <none>       (no description available)
un  linuxcnc-dev        <none>            <none>       (no description available)
un  linuxcnc-doc        <none>            <none>       (no description available)
ii  linuxcnc-doc-en     1:2.9.4           all          motion controller for CNC machines and robots (English documentation)
un  linuxcnc-doc-es     <none>            <none>       (no description available)
un  linuxcnc-doc-fr     <none>            <none>       (no description available)
ii  linuxcnc-ethercat   1.40.0.g8a607c0-0 arm64        LinuxCNC EtherCAT HAL driver
un  linuxcnc-sim        <none>            <none>       (no description available)
un  linuxcnc-sim-dev    <none>            <none>       (no description available)
ii  linuxcnc-uspace     1:2.9.4           arm64        motion controller for CNC machines and robots
ii  linuxcnc-uspace-dev 1:2.9.4           arm64        PC based motion controller for real-time Linux


only when I use terminal to run halrun and loadusr arduino-connector then I can start linuxcnc normally but when I quit program halrun is reset and I has to load it again in order to run linuxcnc.
What I try so far
loadusr arduino-connector at begin of hal file
loadusr arduino-connector at end of hal file
[HAL]TWOPASS = on in .ini
loadusr  python3 /usr/bin/ardino-connector
loadusr -Wn arduino-connector
non of it work only run halrun in terminal work.
Last edit: 16 Aug 2025 14:02 by gundamgear.

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16 Aug 2025 13:59 #333509 by tommylight
Replied by tommylight on topic Arduino IO Expansion
From your error report
./test.hal:95: Pin 'arduino.din.9' does not exist

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16 Aug 2025 14:05 #333510 by gundamgear
Replied by gundamgear on topic Arduino IO Expansion
yes that will only go away when i run terminal halrun and loadusr arduino-connector
it like hal file loadusr arduino-connector not properly load or something

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