RaspClaws & last Raspberry PI 4 tutorial + update install script

1660316805

I bought RaspClaws and the latest versione on RaspBerry PI 4 and I encountered some serious issue on setup.

• Error installing opencv-contrib-python (setup.py)
• Could not determine default I2C bus for platform [Copy link]
• ModuleNotFoundError: No module named 'cv2'
• Error loading numpy
• Error causing hang on boot with webServer.py (and so, no boot and no ssh response)
  

After some days of troubleshooting my RaspClaws is now working.
If setup is already done with standard scripts:

• Remove autostart from webServer.py (from line 124 to 135) and remove/comment lauch of startup.sh in etc/rc.local. This will fix hang on boot.
• Edit file
  /usr/local/lib/python3.9/dist-packages/Adafruit_GPIO/Platform.py
  and replace 'BCM2835' with 'BCM2711'
  this will fix I2C error
• Uninstall numpy
  sudo pip3 uninstall numpy
• Install opencv-python
  sudo apt-get install libgraphite2-3 libatspi2.0-0 libthai0 libxcb-shm0 libxcb-render0 libswscale5 librsvg2-2 libvorbisenc2 libavutil56 libzvbi0 libgsm1 libxinerama1 libxvidcore4 libsrt1.4-gnutls libswresample3 libatk1.0-0 libvorbisfile3 libogg0 libpangoft2-1.0-0 libpgm-5.3-0 libwayland-egl1 libharfbuzz0b libpango-1.0-0 libcairo2 libva-x11-2 libwayland-cursor0 libgfortran5 libxfixes3 libgme0 libxrender1 libvorbis0a libxi6 libudfread0 libspeex1 libwebpmux3 libsodium23 libdatrie1 libatk-bridge2.0-0 libxrandr2 libbluray2 libx264-160 libwavpack1 libxcomposite1 libpangocairo-1.0-0 libsoxr0 libshine3 libxkbcommon0 libvdpau1 libgtk-3-0 libopus0 librabbitmq4 libgdk-pixbuf-2.0-0 libavformat58 libmpg123-0 libxdamage1 libzmq5 libdav1d4 libopenmpt0 libatlas3-base libva2 libva-drm2 libxcursor1 libssh-gcrypt-4 libavcodec58 libaom0 libx265-192 libwayland-client0 libcairo-gobject2 libcodec2-0.9 libpixman-1-0 libdrm2 libsnappy1v5 libnorm1 libopenjp2-7 libtheora0 ocl-icd-libopencl1 libtwolame0 libvpx6 libepoxy0 libchromaprint1 libmp3lame0
  sudo pip3 install opencv-python
• Setup new startup script using systemmd
  sudo nano /lib/systemd/system/raspclaws.service
  Insert this file content
  [Unit]
  Description=RaspClaws Service
  After=multi-user.target
  
  [Service]
  Type=idle
  ExecStart=sudo /usr/bin/python /home/pi/Adeept_RaspClaws/server/webServer.py
  
  [Install]
  WantedBy=multi-user.target
  Save and Exit
• Now run these commands
  sudo chmod 644 /lib/systemd/system/raspclaws.service
  sudo systemctl daemon-reload
  sudo systemctl enable raspclaws.service
  sudo reboot
  

Alternatively you can use modified setup.py scripts from a fresh Raspberry PI SO installation (in attachment).

I hope it will be useful to everyone

1662052843

Thank you! Thank you! Thank you! Thank you! Thank you! Thank you! Thank you! Thank you! Thank you! Thank you!

What are you doing for power? The two batteries that came with the kit aren't enough (18650 3.7v 2000mAh) but I can use a Mac USB-C charger top power it up with all servos connected, so I'm sure it's a power issue

1748249576

Do you recommend keeping all libraries in the global environment, or would using a Python virtual environment (venv) help avoid version issues?

1749631471

If you really need opencv-contrib-python, you should compile from source, but make sure: Raspberry Pi has at least 2 GB swap and fast enough Memory Card (or use SSD via USB 3.0).

1749882412

To resolve issues with RaspClaws on Raspberry Pi 4, I removed autostart from webServer.py and commented out the launch of startup.sh in /etc/rc.local to fix boot hangs. I edited /usr/local/lib/python3.9/dist-packages/Adafruit_GPIO/Platform.py to replace 'BCM2835' with 'BCM2711' for the I2C error, uninstalled numpy, and installed OpenCV using the necessary libraries. Finally, I created a systemd service file for webServer.py, enabled it, and rebooted the system.