Hello, I built myself a DIY Focuser github.com/fehlfarbe/arduino-motorfocus, the version with 28BYJ-48 stepper motor, ULN2003A and a arduino nano china clone. The manual control works and so does the connection on my Odroid-C2. But unfortunately I can't get a connection under Indi with my Odroid-N2+ no matter what I try.

I have also soldered a 10uf capacitor for testing. Even if I only connect the Focuser and have no other USB devices connected, it does not work. After hours of testing, i have no more idea...
The log says the following:

[2022-12-17T10:18:07.128 UTC INFO ][ org.kde.kstars] - Welcome to KStars 3.6.1 Stable
[2022-12-17T10:18:07.129 UTC INFO ][ org.kde.kstars] - Build: 2022-10-15T12:30:09Z
[2022-12-17T10:18:07.129 UTC INFO ][ org.kde.kstars] - OS: "ubuntu"
[2022-12-17T10:18:07.129 UTC INFO ][ org.kde.kstars] - API: "arm64-little_endian-lp64"
[2022-12-17T10:18:07.129 UTC INFO ][ org.kde.kstars] - Arch: "arm64"
[2022-12-17T10:18:07.129 UTC INFO ][ org.kde.kstars] - Kernel Type: "linux"
[2022-12-17T10:18:07.129 UTC INFO ][ org.kde.kstars] - Kernel Version: "4.9.312-23"
[2022-12-17T10:18:07.130 UTC INFO ][ org.kde.kstars] - Qt Version: 5.15.3
[2022-12-17T10:18:07.533 UTC DEBG ][ org.kde.kstars] - Opened the User DB. Ready.
[2022-12-17T10:18:07.749 UTC INFO ][ org.kde.kstars] - Processing "unnamedstars.dat" , HTMesh Level 3
[2022-12-17T10:18:07.749 UTC INFO ][ org.kde.kstars] - Sky Mesh Size: 512
[2022-12-17T10:18:07.803 UTC INFO ][ org.kde.kstars] - Loaded DSO catalog file: "unnamedstars.dat"
[2022-12-17T10:18:08.164 UTC WARN ][ org.kde.kstars] - "Star HD20,794 not found."
[2022-12-17T10:18:08.178 UTC WARN ][ org.kde.kstars] - "Star HD98,230 not found."
[2022-12-17T10:18:08.201 UTC INFO ][ org.kde.kstars] - Loaded DSO catalogs.
[2022-12-17T10:18:08.427 UTC INFO ][ org.kde.kstars] - Loading comets
[2022-12-17T10:18:08.863 UTC DEBG ][ org.kde.kstars] - Paths to color scheme : ("/usr/share/kstars/themes")
[2022-12-17T10:18:09.083 UTC DEBG ][ org.kde.kstars] - Reporting new timestep value: 60
[2022-12-17T10:18:09.305 UTC WARN ][ default] - libpng warning: iCCP: known incorrect sRGB profile
[2022-12-17T10:18:09.444 UTC CRIT ][ kf.xmlgui] - Shortcut for action "get_data" "Download New Data..." set with QAction::setShortcut()! Use KActionCollection::setDefaultShortcut(s) instead.
[2022-12-17T10:18:09.444 UTC CRIT ][ kf.xmlgui] - Shortcut for action "timestep_increase_units" "Increase Time Scale" set with QAction::setShortcut()! Use KActionCollection::setDefaultShortcut(s) instead.
[2022-12-17T10:18:09.444 UTC CRIT ][ kf.xmlgui] - Shortcut for action "timestep_decrease_units" "Decrease Time Scale" set with QAction::setShortcut()! Use KActionCollection::setDefaultShortcut(s) instead.
[2022-12-17T10:18:09.648 UTC DEBG ][ org.kde.kstars] - Daylight Saving Time inactive
[2022-12-17T10:18:09.649 UTC DEBG ][ org.kde.kstars] - Next Daylight Savings Time change (Local Time): "Sun Mar 26 01:00:00 2023 GMT"
[2022-12-17T10:18:09.649 UTC DEBG ][ org.kde.kstars] - Next Daylight Savings Time change (UTC): "Sat Mar 25 00:00:00 2023 GMT"
[2022-12-17T10:18:09.840 UTC DEBG ][ org.kde.kstars] - Daylight Saving Time inactive
[2022-12-17T10:18:09.840 UTC DEBG ][ org.kde.kstars] - Next Daylight Savings Time change (Local Time): "Sun Mar 26 01:00:00 2023 GMT"
[2022-12-17T10:18:09.840 UTC DEBG ][ org.kde.kstars] - Next Daylight Savings Time change (UTC): "Sat Mar 25 00:00:00 2023 GMT"
[2022-12-17T10:18:09.840 UTC DEBG ][ org.kde.kstars] - Starting the timer
[2022-12-17T10:18:10.013 UTC DEBG ][ org.kde.kstars] - Date/Time is: "Sat Dec 17 10:18:09 2022 GMT"
[2022-12-17T10:18:10.014 UTC DEBG ][ org.kde.kstars] - Location: "XXX, Germany"
[2022-12-17T10:18:10.014 UTC DEBG ][ org.kde.kstars] - TZ0: 1 TZ: 1
[2022-12-17T10:18:10.014 UTC WARN ][ org.kde.kstars] - Current icon theme is "Yaru-olive-dark"
[2022-12-17T10:18:10.607 UTC WARN ][ default] - QImage::scaled: Image is a null image
[2022-12-17T10:18:11.467 UTC INFO ][ org.kde.kstars] - Loading comets
[2022-12-17T10:18:19.233 UTC INFO ][ org.kde.kstars] - Loading asteroids
[2022-12-17T10:18:24.850 UTC DEBG ][ org.kde.kstars.ekos] - Resetting Ekos Manager...
[2022-12-17T10:18:24.897 UTC INFO ][ org.kde.kstars.ekos] - "Starting INDI services..."
[2022-12-17T10:18:24.898 UTC DEBG ][ org.kde.kstars.indi] - INDI: Starting local drivers...
[2022-12-17T10:18:24.898 UTC DEBG ][ org.kde.kstars.indi] - Starting INDI Server: ("-v", "-p", "7624", "-m", "1024", "-r", "0", "-f", "/tmp/indififo7f89eb54") -f "/tmp/indififo7f89eb54"
[2022-12-17T10:18:24.915 UTC DEBG ][ org.kde.kstars.indi] - INDI: INDI Server started locally on port 7624
[2022-12-17T10:18:24.916 UTC DEBG ][ org.kde.kstars.indi] - Starting INDI Driver "indi_simulator_telescope"
[2022-12-17T10:18:24.915 UTC DEBG ][ org.kde.kstars.indi] - INDI Server Started? true
[2022-12-17T10:18:24.917 UTC DEBG ][ org.kde.kstars.indi] - Starting INDI Driver "indi_simulator_ccd"
[2022-12-17T10:18:24.934 UTC DEBG ][ org.kde.kstars.indi] - Starting INDI Driver "indi_moonlite_focus"
[2022-12-17T10:18:24.936 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: "2022-12-17T10:18:24: startup: /usr/bin/indiserver -v -p 7624 -m 1024 -r 0 -f /tmp/indififo7f89eb54"
[2022-12-17T10:18:24.937 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: "2022-12-17T10:18:24: listening to port 7624 on fd 5"
[2022-12-17T10:18:24.937 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: "2022-12-17T10:18:24: Local server: listening on local domain at: @/tmp/indiserver"
[2022-12-17T10:18:24.937 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: "2022-12-17T10:18:24: FIFO: start indi_simulator_telescope -n \"Telescope Simulator\""
[2022-12-17T10:18:24.938 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: "2022-12-17T10:18:24: With name: Telescope Simulator"
[2022-12-17T10:18:24.938 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: "2022-12-17T10:18:24: FIFO: Starting driver indi_simulator_telescope"
[2022-12-17T10:18:24.938 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: "2022-12-17T10:18:24: Driver indi_simulator_telescope: pid=5112 rfd=9 wfd=9 efd=10"
[2022-12-17T10:18:24.938 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: "2022-12-17T10:18:24: FIFO: start indi_simulator_ccd"
[2022-12-17T10:18:24.938 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: "2022-12-17T10:18:24: FIFO: Starting driver indi_simulator_ccd"
[2022-12-17T10:18:24.939 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: "2022-12-17T10:18:24: Driver indi_simulator_ccd: pid=5113 rfd=11 wfd=11 efd=12"
[2022-12-17T10:18:24.939 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: "2022-12-17T10:18:24: FIFO: start indi_moonlite_focus -n \"MoonLite\""
[2022-12-17T10:18:24.939 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: "2022-12-17T10:18:24: With name: MoonLite"
[2022-12-17T10:18:24.939 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: "2022-12-17T10:18:24: FIFO: Starting driver indi_moonlite_focus"
[2022-12-17T10:18:24.940 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: "2022-12-17T10:18:24: Driver indi_moonlite_focus: pid=5114 rfd=13 wfd=13 efd=14"
[2022-12-17T10:18:24.940 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: ""
[2022-12-17T10:18:24.941 UTC DEBG ][ org.kde.kstars.indi] - Adding managed driver "Telescope Simulator"
[2022-12-17T10:18:24.941 UTC DEBG ][ org.kde.kstars.indi] - Adding managed driver "CCD Simulator"
[2022-12-17T10:18:24.942 UTC DEBG ][ org.kde.kstars.indi] - Adding managed driver "MoonLite"
[2022-12-17T10:18:24.943 UTC DEBG ][ org.kde.kstars.indi] - INDIListener: Adding a new client manager to INDI listener..
[2022-12-17T10:18:24.943 UTC DEBG ][ org.kde.kstars.indi] - INDI: Connecting to local INDI server on port 7624 ...
[2022-12-17T10:18:24.944 UTC DEBG ][ org.kde.kstars.indi] - INDI server connected.
[2022-12-17T10:18:24.945 UTC INFO ][ org.kde.kstars.ekos] - "INDI services started on port 7,624. Please connect devices."
[2022-12-17T10:18:24.964 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: "2022-12-17T10:18:24: Client 8: new arrival from local pid 4973 (user: 1000:1000) - welcome!"
[2022-12-17T10:18:24.965 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: ""
[2022-12-17T10:18:24.984 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: "2022-12-17T10:18:24: Driver indi_simulator_telescope: HaAxis: TrackRate 1, trackingRateDegSec 15.041067 arcsec"
[2022-12-17T10:18:24.984 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: ""
[2022-12-17T10:18:24.988 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: "2022-12-17T10:18:24: Driver indi_simulator_ccd: snooping on Telescope Simulator.EQUATORIAL_EOD_COORD"
[2022-12-17T10:18:24.988 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: "2022-12-17T10:18:24: Driver indi_simulator_ccd: snooping on Telescope Simulator.EQUATORIAL_COORD"
[2022-12-17T10:18:24.988 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: "2022-12-17T10:18:24: Driver indi_simulator_ccd: snooping on Telescope Simulator.TELESCOPE_INFO"
[2022-12-17T10:18:24.988 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: "2022-12-17T10:18:24: Driver indi_simulator_ccd: snooping on Telescope Simulator.GEOGRAPHIC_COORD"
[2022-12-17T10:18:24.988 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: "2022-12-17T10:18:24: Driver indi_simulator_ccd: snooping on Telescope Simulator.TELESCOPE_PIER_SIDE"
[2022-12-17T10:18:24.988 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: "2022-12-17T10:18:24: Driver indi_simulator_ccd: snooping on Rotator Simulator.ABS_ROTATOR_ANGLE"
[2022-12-17T10:18:24.988 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: "2022-12-17T10:18:24: Driver indi_simulator_ccd: snooping on Focuser Simulator.ABS_FOCUS_POSITION"
[2022-12-17T10:18:24.989 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: "2022-12-17T10:18:24: Driver indi_simulator_ccd: snooping on Focuser Simulator.FOCUS_TEMPERATURE"
[2022-12-17T10:18:24.989 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: "2022-12-17T10:18:24: Driver indi_simulator_ccd: snooping on CCD Simulator.FILTER_SLOT"
[2022-12-17T10:18:24.989 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: "2022-12-17T10:18:24: Driver indi_simulator_ccd: snooping on CCD Simulator.FILTER_NAME"
[2022-12-17T10:18:24.989 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: "2022-12-17T10:18:24: Driver indi_simulator_ccd: snooping on SQM.SKY_QUALITY"
[2022-12-17T10:18:24.989 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: ""
[2022-12-17T10:18:24.989 UTC DEBG ][ org.kde.kstars.indi] - Received new device MoonLite
[2022-12-17T10:18:24.989 UTC DEBG ][ org.kde.kstars.indi] - Received new device CCD Simulator
[2022-12-17T10:18:25.007 UTC DEBG ][ org.kde.kstars.indi] - Received new device Telescope Simulator
[2022-12-17T10:18:25.014 UTC DEBG ][ org.kde.kstars.indi] - INDIListener: New device "MoonLite"
[2022-12-17T10:18:25.015 UTC INFO ][ org.kde.kstars.ekos] - Ekos received a new device: "MoonLite"
[2022-12-17T10:18:25.019 UTC DEBG ][ org.kde.kstars.indi] - < MoonLite >: < CONNECTION >
[2022-12-17T10:18:25.019 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: "2022-12-17T10:18:24: Driver indi_simulator_ccd: snooping on Focuser Simulator.FWHM"
[2022-12-17T10:18:25.019 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: "2022-12-17T10:18:24: Driver indi_simulator_telescope: snooping on GPS Simulator.GEOGRAPHIC_COORD"
[2022-12-17T10:18:25.019 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: "2022-12-17T10:18:24: Driver indi_simulator_telescope: snooping on GPS Simulator.TIME_UTC"
[2022-12-17T10:18:25.019 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: "2022-12-17T10:18:24: Driver indi_simulator_telescope: snooping on Dome Simulator.DOME_PARK"
[2022-12-17T10:18:25.019 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: "2022-12-17T10:18:24: Driver indi_simulator_telescope: snooping on Dome Simulator.DOME_SHUTTER"
[2022-12-17T10:18:25.020 UTC DEBG ][ org.kde.kstars.indi] - INDI Server: ""
[2022-12-17T10:18:25.072 UTC DEBG ][ org.kde.kstars.indi] - < MoonLite >: < DRIVER_INFO >
[2022-12-17T10:18:25.072 UTC DEBG ][ org.kde.kstars.indi] - < MoonLite >: < DEBUG >
[2022-12-17T10:18:25.072 UTC DEBG ][ org.kde.kstars.indi] - < MoonLite >: < POLLING_PERIOD >
[2022-12-17T10:18:25.072 UTC DEBG ][ org.kde.kstars.indi] - < MoonLite >: < CONFIG_PROCESS >
[2022-12-17T10:18:25.072 UTC DEBG ][ org.kde.kstars.indi] - < MoonLite >: < CONNECTION_MODE >
[2022-12-17T10:18:25.140 UTC DEBG ][ org.kde.kstars.indi] - INDIListener: New device "CCD Simulator"
[2022-12-17T10:18:25.140 UTC INFO ][ org.kde.kstars.ekos] - Ekos received a new device: "CCD Simulator"
[2022-12-17T10:18:25.142 UTC DEBG ][ org.kde.kstars.indi] - < MoonLite >: < SYSTEM_PORTS >
[2022-12-17T10:18:25.143 UTC DEBG ][ org.kde.kstars.indi] - < MoonLite >: < DEVICE_PORT >
[2022-12-17T10:18:25.144 UTC DEBG ][ org.kde.kstars.indi] - < MoonLite >: < DEVICE_BAUD_RATE >
[2022-12-17T10:18:25.145 UTC DEBG ][ org.kde.kstars.indi] - < MoonLite >: < DEVICE_AUTO_SEARCH >
[2022-12-17T10:18:25.146 UTC DEBG ][ org.kde.kstars.indi] - < MoonLite >: < DEVICE_PORT_SCAN >
[2022-12-17T10:18:25.148 UTC DEBG ][ org.kde.kstars.indi] - < CCD Simulator >: < CONNECTION >
[2022-12-17T10:18:25.148 UTC DEBG ][ org.kde.kstars.indi] - < CCD Simulator >: < DRIVER_INFO >
[2022-12-17T10:18:25.148 UTC DEBG ][ org.kde.kstars.indi] - < CCD Simulator >: < POLLING_PERIOD >
[2022-12-17T10:18:25.148 UTC DEBG ][ org.kde.kstars.indi] - < CCD Simulator >: < DEBUG >
[2022-12-17T10:18:25.148 UTC DEBG ][ org.kde.kstars.indi] - < CCD Simulator >: < CONFIG_PROCESS >
[2022-12-17T10:18:25.148 UTC DEBG ][ org.kde.kstars.indi] - < CCD Simulator >: < ACTIVE_DEVICES >
[2022-12-17T10:18:25.148 UTC DEBG ][ org.kde.kstars.indi] - < CCD Simulator >: < SIMULATOR_SETTINGS >
[2022-12-17T10:18:25.148 UTC DEBG ][ org.kde.kstars.indi] - < CCD Simulator >: < EQUATORIAL_PE >
[2022-12-17T10:18:25.148 UTC DEBG ][ org.kde.kstars.indi] - < CCD Simulator >: < SIM_FOCUSING >
[2022-12-17T10:18:25.148 UTC DEBG ][ org.kde.kstars.indi] - < CCD Simulator >: < SIMULATE_BAYER >
[2022-12-17T10:18:25.149 UTC DEBG ][ org.kde.kstars.indi] - < CCD Simulator >: < CCD_SIMULATE_CRASH >
[2022-12-17T10:18:25.199 UTC DEBG ][ org.kde.kstars.indi] - INDIListener: New device "Telescope Simulator"
[2022-12-17T10:18:25.199 UTC INFO ][ org.kde.kstars.ekos] - Ekos received a new device: "Telescope Simulator"
[2022-12-17T10:18:25.202 UTC DEBG ][ org.kde.kstars.indi] - < Telescope Simulator >: < CONNECTION >
[2022-12-17T10:18:25.202 UTC DEBG ][ org.kde.kstars.indi] - < Telescope Simulator >: < DRIVER_INFO >
[2022-12-17T10:18:25.202 UTC DEBG ][ org.kde.kstars.indi] - < Telescope Simulator >: < POLLING_PERIOD >
[2022-12-17T10:18:25.202 UTC DEBG ][ org.kde.kstars.indi] - < Telescope Simulator >: < DEBUG >
[2022-12-17T10:18:25.203 UTC DEBG ][ org.kde.kstars.indi] - < Telescope Simulator >: < CONFIG_PROCESS >
[2022-12-17T10:18:25.203 UTC DEBG ][ org.kde.kstars.indi] - < Telescope Simulator >: < CONNECTION_MODE >
[2022-12-17T10:18:25.203 UTC DEBG ][ org.kde.kstars.indi] - < Telescope Simulator >: < SYSTEM_PORTS >
[2022-12-17T10:18:25.203 UTC DEBG ][ org.kde.kstars.indi] - < Telescope Simulator >: < DEVICE_PORT >
[2022-12-17T10:18:25.203 UTC DEBG ][ org.kde.kstars.indi] - < Telescope Simulator >: < DEVICE_BAUD_RATE >
[2022-12-17T10:18:25.203 UTC DEBG ][ org.kde.kstars.indi] - < Telescope Simulator >: < DEVICE_AUTO_SEARCH >
[2022-12-17T10:18:25.203 UTC DEBG ][ org.kde.kstars.indi] - < Telescope Simulator >: < DEVICE_PORT_SCAN >
[2022-12-17T10:18:25.203 UTC DEBG ][ org.kde.kstars.indi] - < Telescope Simulator >: < ACTIVE_DEVICES >
[2022-12-17T10:18:25.203 UTC DEBG ][ org.kde.kstars.indi] - < Telescope Simulator >: < DOME_POLICY >
[2022-12-17T10:18:25.203 UTC DEBG ][ org.kde.kstars.indi] - < Telescope Simulator >: < TELESCOPE_INFO >
[2022-12-17T10:18:25.203 UTC DEBG ][ org.kde.kstars.indi] - < Telescope Simulator >: < SCOPE_CONFIG_NAME >
[2022-12-17T10:18:25.203 UTC DEBG ][ org.kde.kstars.indi] - < Telescope Simulator >: < MOUNT_TYPE >
[2022-12-17T10:18:25.203 UTC DEBG ][ org.kde.kstars.indi] - < Telescope Simulator >: < SIM_PIER_SIDE >
[2022-12-17T10:18:25.203 UTC DEBG ][ org.kde.kstars.indi] - < Telescope Simulator >: < MOUNT_MODEL >
[2022-12-17T10:18:25.204 UTC DEBG ][ org.kde.kstars.indi] - < Telescope Simulator >: < MOUNT_AXES >
[2022-12-17T10:18:25.204 UTC DEBG ][ org.kde.kstars.indi] - < Telescope Simulator >: < FLIP_HA >
[2022-12-17T10:18:25.207 UTC INFO ][ org.kde.kstars.indi] - MoonLite : "[INFO] Debug is enabled. "
[2022-12-17T10:18:25.207 UTC DEBG ][ org.kde.kstars.indi] - < MoonLite >: < DEBUG_LEVEL >
[2022-12-17T10:18:25.208 UTC DEBG ][ org.kde.kstars.indi] - < MoonLite >: < LOGGING_LEVEL >
[2022-12-17T10:18:25.210 UTC DEBG ][ org.kde.kstars.indi] - < MoonLite >: < LOG_OUTPUT >
[2022-12-17T10:18:25.260 UTC DEBG ][ org.kde.kstars.indi] - MoonLite : "[DEBUG] Toggle Debug Level -- Driver Debug "
[2022-12-17T10:18:25.388 UTC INFO ][ org.kde.kstars.ekos] - "CCD Simulator" is connected and ready.
[2022-12-17T10:18:25.442 UTC INFO ][ org.kde.kstars.ekos] - "Telescope Simulator" is connected and ready.
[2022-12-17T10:18:25.449 UTC INFO ][ org.kde.kstars.ekos] - "MoonLite" is connected and ready.
[2022-12-17T10:18:35.087 UTC INFO ][ org.kde.kstars.ekos] - "Failed to connect to \nMoonLite\nCCD Simulator\nTelescope Simulator\nPlease ensure each device is connected and powered on."
[2022-12-17T10:18:42.014 UTC DEBG ][ org.kde.kstars.indi] - MoonLite : "[DEBUG] Connecting to /dev/ttyUSB0 @ 9600 "
[2022-12-17T10:18:42.018 UTC DEBG ][ org.kde.kstars.indi] - MoonLite : "[DEBUG] Port FD 3 "
[2022-12-17T10:18:42.018 UTC DEBG ][ org.kde.kstars.indi] - MoonLite : "[DEBUG] Connection successful, attempting handshake... "
[2022-12-17T10:18:42.019 UTC DEBG ][ org.kde.kstars.indi] - MoonLite : "[DEBUG] CMD <:GV#> "
[2022-12-17T10:18:46.019 UTC DEBG ][ org.kde.kstars.indi] - MoonLite : "[DEBUG] CMD <:GV#> "
[2022-12-17T10:18:50.022 UTC DEBG ][ org.kde.kstars.indi] - MoonLite : "[DEBUG] CMD <:GV#> "
[2022-12-17T10:18:54.028 UTC INFO ][ org.kde.kstars.indi] - MoonLite : "[INFO] Error retrieving data from MoonLite, please ensure MoonLite controller is powered and the port is correct. "
[2022-12-17T10:18:54.028 UTC DEBG ][ org.kde.kstars.indi] - MoonLite : "[DEBUG] Handshake failed. "


DEMSG says:

[ 368.441371] usb 1-1.1: new full-speed USB device number 4 using xhci-hcd
[ 368.570004] usb 1-1.1: New USB device found, idVendor=1a86, idProduct=7523
[ 368.570008] usb 1-1.1: New USB device strings: Mfr=0, Product=2, SerialNumber=0
[ 368.570010] usb 1-1.1: Product: USB2.0-Ser!
[ 368.580428] ch341 1-1.1:1.0: ch341-uart converter detected
[ 368.581169] usb 1-1.1: ch341-uart converter now attached to ttyUSB0

Can anyone please help?

I have build this focusser 3 times and working well. The capacitor is only neccessary if you connect the Arduino to an ASCOM driver.
However 100nF or up to 1µF is enough.
Did you check the focusser on a PC with N.I.N.A or something using the Moonlite Ascom driver and does it work?

On EKOS you should open the INDI window and select the correct USB interface. Otherwise it could be that the automatic port selection interferes with an other interface like EQMOD.

Thanks for your answer. I have installed ascom and the moonlite driver and it works as well as with my odroid c2.
I've tried to disable auto connect, created a udev rule for the focuser, but nothing works. I have attached screenshots. Is there any other thing, i could test?

Enable focuser logging (check my signature). After that, edit your equipment profile and turn off "Auto Connect". Save profile and then try to connect again. Attach log.

Thank you, here is my log attached.