kdiniantoro

OpenMomo プロジェクト

日時:	2024-02-01
作:	時雨堂
資料バージョン:	2024.1
GitHub URL:	https://github.com/shiguredo/momo
製品 URL:	https://momo.shiguredo.jp/

Enable camera module

Edit your /boot/config.txt file and make sure the following lines look like this:

start_x=1             # essential
gpu_mem=128           # at least, or maybe more if you wish
disable_camera_led=1  # optional, if you don't want the led to glow

Load bcm2835-v4l2 module

Introduction

Installing Huawei E3531 Surf Stick on Linux

May be a valuable insight for more modern surf sticks like Huawei E8231 and the likes ...

Linux is currently Ubuntu, Debian or Raspbian should be similar

The problem

This Huawei Surf stick has several USB mode. It appears first as CD-ROM-like device, so that Windows users can install their driver, then switches mode to appear as "something else". By defaut, this is a network card (virtually connected to a router),

Device specifications

Raspberry pi - Any
USB Audio Adapter - USB Adapter
USB Hub - Zebronics USB Hub

List USB Device

Once you connected the USB Audio device with Raspberry pi use following command to see the list of connected USB device

These are notes while researching a way to convert a browser/website to a stream. This could be used for Facebook Live or for webrecording. TL'DR:

I started with Phantomjs - but that didn't support the html5 video tag
SlimerJS supports it, but there is no way to record audio directly (though this might come from desktop audio)
So I moved to research ffmpeg/X11/XVFB to record it with linux which works
But ffmpeg has no easy way to mix streams/overlays to I moved on to OBS with overlay browser support
I started researching options OBS in docker and it needed best a GPU , so I move to nvidia-docker
And so came across building game servers on EC2/AWS using GPUs and managed to run OBS inside of GPU g2x.large machine
I tried streaming to twich , which works great and managed to restream 4K 60FPS youtube on an AWS instance
Remote control works through OBS-Remote but OBS has kinda limit in types of features

Dependencies

usb_modeswitch, usb_modeswitch-data
libusb1
libusb-devel(Fedora), libusb-dev(Debian based)

Configuration

By default, your linux box would register your Huawei E8372 as a Mass Storage device and not (somehow) as a modem. First, make sure you have the exace same device we're talking about. This can be confirmed by looking at two values using the following command (while the dongle is plugged in): As an elevated user:

    # lsusb | grep Huawei

HOWTO use a Huawei E3372 on OpenWRT

This modem is also sold as a MegaFon M150-2 USB dongle

Needed Software

Install the needed packages via opkg tool

opkg update

	# /etc/udev/rules.d/70-huawei-e3.conf

	# Necessary for network interface name
	SUBSYSTEM=="net", ACTION=="add", ATTRS{idVendor}=="12d1", ATTRS{idProduct}=="14dc", NAME="usb0"

	# Might be duplicate to usb_modeswitch config, however it's good to have it there
	ACTION=="add", SUBSYSTEM=="usb", ATTRS{idVendor}=="12d1", ATTRS{idProduct}=="1f01", RUN+="/usr/sbin/usb_modeswitch -c /etc/usb_modeswitch.d/huawei_e3.conf"

	import cv2

	capture = cv2.VideoCapture(0)
	capture.set(3, 320) #set width of frame
	capture.set(4, 200) #set hieght of frame
	capture.set(5, 20) #set FPS
	capture.set(10, 20) #set brightness
	successful = True
	while successful:
	successful, image = capture.read()

	# Multiple sources here:
	# https://atinkerersblog.wordpress.com/2014/07/26/get-notified-when-your-raspberry-pi-is-booted-with-pushbullet/
	# - follow the steps to make rc.local executable below
	# this script is a compilation of all three below
	# https://learnraspi.com/get-notifications-raspberry-pi-pushbullet/
	# http://biosrhythm.com/?p=1151
	# http://askubuntu.com/questions/9853/how-can-i-make-rc-local-run-on-startup

	# create the pushbullet script
	$ sudo nano /usr/bin/notify.sh