chaiyujin

Ubuntu: Install Kernel and Set GRUB Default Kernel

Install Kernel

Install the default kernel:

sudo apt install linux-generic

Set GRUB Default Kernel

1. Find entrance from /boot/grub/grub.cfg
   • Get the $menuentry_id_option:

larsch

Installing Arch Linux AArch64 on the NanoPi R2S

There is current no support for the NanoPi R2S in ArchLinuxArm, but it's possible to run it using the generic aarch64 installation.

Prepare sd-card/image

1. Copy bootloader and uBoot from an armbian image using for the NanoPi R2S using dd (sectors 32 to 32767) everything before the partition, except the partition table).
2. Create an ext4 partition on /dev/mmcblk0p1 at offset of 32768 sectors (16384 KiB):

Device         Boot Start      End  Sectors  Size Id Type

zoilomora

How to disable cloud-init in Ubuntu

Prevent start

• Create an empty file to prevent the service from starting

    sudo touch /etc/cloud/cloud-init.disabled
  

Uninstall

alfakini

import os
from PIL import Image
from PIL.ImageOps import grayscale
from watchdog.events import RegexMatchingEventHandler

class ImagesEventHandler(RegexMatchingEventHandler):
    THUMBNAIL_SIZE = (128, 128)
    IMAGES_REGEX = [r".*[^_thumbnail]\.jpg$"]

    def __init__(self):

projetsdiy

# Scanner i2c en MicroPython | MicroPython i2c scanner
# Renvoi l'adresse en decimal et hexa de chaque device connecte sur le bus i2c
# Return decimal and hexa adress of each i2c device
# https://projetsdiy.fr - https://diyprojects.io (dec. 2017)

import machine
i2c = machine.I2C(scl=machine.Pin(5), sda=machine.Pin(4))

print('Scan i2c bus...')
devices = i2c.scan()

dglaude

### microPython ESP8266 documentation from http://docs.micropython.org/en/latest/esp8266/esp8266/quickref.html#neopixel-driver
###
###from machine import Pin
###from neopixel import NeoPixel
###
###pin = Pin(0, Pin.OUT)   # set GPIO0 to output to drive NeoPixels
###np = NeoPixel(pin, 8)   # create NeoPixel driver on GPIO0 for 8 pixels
###np[0] = (255, 255, 255) # set the first pixel to white
###np.write()              # write data to all pixels
###r, g, b = np[0]         # get first pixel colour

Brainiarc7

Using VAAPI's hardware accelerated video encoding on Linux with Intel's hardware on FFmpeg and libav

Hello, brethren :-)

As it turns out, the current version of FFmpeg (version 3.1 released earlier today) and libav (master branch) supports full H.264 and HEVC encode in VAAPI on supported hardware that works reliably well to be termed "production-ready".

luca-m

#
# Upload a sample to VirusTotal and pretty print the report. All in a handy alias.  
#
# Dependecies:
#
#  * python > 2.7
#  * pip install Pygments==1.4
#  * curl
#  * VirusTotal API key
#