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Tag: Momo

  • Published RCVehiclePy on github

    Published RCVehiclePy on github

    Repository

    https://github.com/shirokunet/RCVehiclePy

    Videos




  • Run WebRTC Native Client Momo on Raspberry Pi 3B

    Run WebRTC Native Client Momo on Raspberry Pi 3B

    Goal

    Download momo binary and run on Raspberry Pi 3B to see a Pi’s camera image on Host PC.

    Environment

    • Server: Raspberry Pi 3B
    • Client: X220 (Ubuntu 18.04)
    • Momo: 19.07.0-rc0

    Setup Camera

    • Connect a camera to Pi
    • $ vcgencmd get_camera
      • supported=1 detected=1 # Should be like this

    Setup Library

    • $ sudo apt-get install libnspr4 libnss3
    • $ sudo modprobe bcm2835-v4l2
    • $ sudo vi /etc/modules
      • bcm2835-v4l2 # For Using Raspberry Pi Camera
    • $ sudo reboot

    Check IP address

    • $ ifconfig
      • wlan0: flags=4163 mtu 1500
      • inet 10.0.0.88 netmask 255.255.255.0 broadcast 10.0.0.255

    Get momo

    • $ wget https://github.com/shiguredo/momo/releases/download/19.07.0-rc0/momo-19.07.0-rc0_raspbian-stretch_armv7.tar.gz
      • You can see newest version at here.
        • Raspbian Stretch ARMv7
          • For Raspberry Pi 3 B/B+
        • Raspbian Stretch ARMv6
          • For Raspberry Pi Zero W/WH
    • $ tar xvzf momo-19.07.0-rc0_raspbian-stretch_armv7.tar.gz
    • $ sudo rm -r momo-19.07.0-rc0_raspbian-stretch_armv7.tar.gz

    Run momo

    • $ cd momo-19.07.0-rc0_raspbian-stretch_armv7/
    • $ ./momo --version
      • WebRTC Native Client Momo version 19.07.0-rc0 USE_MMAL_ENCODER=1
    • $ ./momo --help
    • $ ./momo --no-audio --resolution HD --framerate 30 p2p

    Acces

    Benchｍark

    The delay is about 100~300msec.

    momo 19.02.0

    momo 19.07.0-rc0

    My Note

    • According to the wiki,
      • RPi 3 Model B is ARMv8-A (64/32-bit).
      • RPi zero is ARMv6Z (32-bit)
    • However if we run the command on Pi 3B,
      • $ lscpu
        • Architecture: armv7l
        • Byte Order: Little Endian
        • CPU(s): 4
        • On-line CPU(s) list: 0-3
        • Thread(s) per core: 1
        • Core(s) per socket: 4
        • Socket(s): 1
        • Model: 4
        • Model name: ARMv7 Processor rev 4 (v7l)
        • CPU max MHz: 1200.0000
        • CPU min MHz: 600.0000
        • BogoMIPS: 38.40
        • Flags: half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32
    • Which mean Pi 3B is not compatible ARMv8 yet.

    Reference