Sandiko sandikodev

## css.cheatsheet
## SELECTOR
### CSS2
/* Child Selector */
div > p {
  color: red;
}

/* Adjacent Sibling Selector */
h1 + p {
  margin-top: 20px;

## heart-loading-animation.markdown

      
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                sandikodev
                / heart-loading-animation.markdown
            
            
              Created
              December 23, 2022 21:00
            
              
                Heart Loading Animation
              
          
    Heart Loading Animation

A Pen by Abbos Nurgulshanov on CodePen.
License.

  
## gsm-setup.md

      
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                sandikodev
                / gsm-setup.md
            
            
              Created
              February 23, 2021 10:07
                — forked from heyalexej/gsm-setup.md
            
              
                SIM Card Management Through GSM Modem On Linux
              
          
    SIM Card Management Over GSM Modem

A small guide on how to send and receive USSD codes on Linux

I am using the built in GSM (UMTS) modem of my Thinkpad X1 extensively because I am often in places with flaky internet connections. I connect through the standard Network Manager on Ubuntu and everything works fine. There was one major annoyance though. Every time I wanted to top up the SIM balance or book a new package, I needed a phone to send and receive USSD codes. So I took some time to figure out how to do it from the shell. I wrote this down as a help for others and a reminder for myself. Without further ado...
First intsall gammu and picocom.
➜  ~  sudo apt-get install -y gammu picocom

  
## hik cheatsheet
https://www.hikvision.com/content/dam/hikvision/en/support/download/how-to/ipc/How%20to%20Get%20IPC%20MJPEG%20Stream%20via%20HTTP%20Commands.pdf
https://www.hikvision.com/ueditor/net/upload/2017-05-26/df89f1cb-b905-4182-bdb0-661de58584c1.pdf
http://mega-avr.net/file/programmy/IP-camera/HIKVISION/2.SDK/ISAPI/HIKVISION%20ISAPI_2.0-RaCM%20Service.pdf
http://86.49.187.98/Hikvision/Jak%20na%20to/Kamery_DVR_NVR/How%20to%20integrate%20with%20Hikvision%20LPR%20function%20via%20ISAPI.pdf
ftp://ftp.luis.ru/Raznoe/LTV_SDK/LTV_IP_S-Series_API/ISAPI_2.0-PTZ%20Service.pdf
https://11936797612864389938.googlegroups.com/attach/4fbec897364cf/HUNT%20RTSP%20and%20HTTP%20urls.pdf?part=0.1&view=1&vt=ANaJVrHQtZY6rc7ss5P8_hPsEVoagPjQD-5pcKxIXCHiEoNn_sOCsAnV9jRxTekz3i2T19u1bYlYbIRU9JzZJBs7y8vo855cip2x5rNoB0tq5jviERXBNUM

http://en0.ch/2020/08/add-temperature-to-hikvision-camera-overlay/

324284193-HIKCGI-Image-Display-Function.pdf

## phpmyadmin cheatsheet
==============[ configure user of mysql/mariadb ]==============
sudo mysql -u root
CREATE DATABASE wordpress CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci;
GRANT ALL ON wordpress.* TO 'wp-user'@'localhost' IDENTIFIED BY 'Passw0rd!';
exit
==============[ install phpmyadmin by backport repo's ]==============
echo "deb http://deb.debian.org/debian buster-backports main" >> /etc/apt/sources.list
sudo apt update
sudo apt -t buster-backports install phpmyadmin
PROMPT > web server as autoinstall > APACHE2

## openssl cheatsheet
#create public key
openssl req -x509 -new -nodes -keyout pub.key -out pub.pem

#create keynodes
openssl req -new -nodes -keyout nas.key -out nas.pem

#register keynodes to publickey
openssl x509 -req -CA pub.pem -CAkey pub.key -in nas.pem -out nas.crt -set_serial 01

## BeagleBoneLinuxUBootFromScratch.md

      
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                sandikodev
                / BeagleBoneLinuxUBootFromScratch.md
            
            
              Created
              February 24, 2021 17:44
                — forked from eepp/BeagleBoneLinuxUBootFromScratch.md
            
              
                Building U-Boot and Linux 3.11 from scratch for the BeagleBone, and booting
              
          
    Building U-Boot and Linux 3.11 from scratch for the BeagleBone, and booting


Author: Philippe Proulx
Date:   Fri Sep 13 18:05:26 EDT 2013


Introduction


## emulator-install-using-avdmanager.md

      
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                sandikodev
                / emulator-install-using-avdmanager.md
            
            
              Created
              February 23, 2021 20:04
                — forked from mrk-han/emulator-install-using-avdmanager.md
            
              
                Installing and creating Emulators with AVDMANAGER (For Continuous Integration Server or Local Use)
              
          
    Install and Create Emulators using AVDMANAGER and SDKMANAGER

TL;DR

For generic skin emulator with default apis (without google apis):


List All System Images Available for Download: sdkmanager --list | grep system-images


Download Image: sdkmanager --install "system-images;android-29;default;x86"


## _Ping I2C Johnny Five backpack.md

      
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                sandikodev
                / _Ping I2C Johnny Five backpack.md
            
            
              Created
              February 15, 2021 16:01
                — forked from soundanalogous/_Ping I2C Johnny Five backpack.md
            
          
    Building an ultrasonic sensor backpack

Note: This is a bit of a scratch to see what's involved in getting the ping sensor to work as an I2C backpack.
Dependencies.

I did this on a Trinket as that's what I had to hand to make programming a bit faster. If you use a trinket you
will need the custom arduino. Check out the Adafruit Trinket info https://learn.adafruit.com/introducing-trinket/introduction
You also need a custom form of the TinyWireS library that manages sending multiple registers on one read request (the

  
## ffmpeg4matelight.sh
# Stream a video
ffmpeg -re -i video.avi -vf "scale=40:ih*40/iw, crop=40:16" -f rawvideo -vcodec rawvideo -sws_flags bilinear -pix_fmt rgb24 - > /dev/udp/matelight.cbrp3.c-base.org/1337

# Loop a gif
ffmpeg -re -ignore_loop 0 -i image.gif -vf "scale=40:ih*40/iw, crop=40:16" -f rawvideo -vcodec rawvideo -sws_flags bilinear -pix_fmt rgb24 - > /dev/udp/matelight.cbrp3.c-base.org/1337

# Stream webcam
# Mac
ffmpeg -re -f avfoundation -r 30 -s 1280x720 -i "0" -vf "scale=40:ih*40/iw, crop=40:16, pp=autolevels:f, eq=1.5" -f rawvideo -vcodec rawvideo -sws_flags bilinear -pix_fmt rgb24 - > /dev/udp/matelight.cbrp3.c-base.org/1337
	## SELECTOR
	### CSS2
	/* Child Selector */
	div > p {
	color: red;
	}

	/* Adjacent Sibling Selector */
	h1 + p {
	margin-top: 20px;
	https://www.hikvision.com/content/dam/hikvision/en/support/download/how-to/ipc/How%20to%20Get%20IPC%20MJPEG%20Stream%20via%20HTTP%20Commands.pdf
	https://www.hikvision.com/ueditor/net/upload/2017-05-26/df89f1cb-b905-4182-bdb0-661de58584c1.pdf
	http://mega-avr.net/file/programmy/IP-camera/HIKVISION/2.SDK/ISAPI/HIKVISION%20ISAPI_2.0-RaCM%20Service.pdf
	http://86.49.187.98/Hikvision/Jak%20na%20to/Kamery_DVR_NVR/How%20to%20integrate%20with%20Hikvision%20LPR%20function%20via%20ISAPI.pdf
	ftp://ftp.luis.ru/Raznoe/LTV_SDK/LTV_IP_S-Series_API/ISAPI_2.0-PTZ%20Service.pdf
	https://11936797612864389938.googlegroups.com/attach/4fbec897364cf/HUNT%20RTSP%20and%20HTTP%20urls.pdf?part=0.1&view=1&vt=ANaJVrHQtZY6rc7ss5P8_hPsEVoagPjQD-5pcKxIXCHiEoNn_sOCsAnV9jRxTekz3i2T19u1bYlYbIRU9JzZJBs7y8vo855cip2x5rNoB0tq5jviERXBNUM

	http://en0.ch/2020/08/add-temperature-to-hikvision-camera-overlay/

	324284193-HIKCGI-Image-Display-Function.pdf
	==============[ configure user of mysql/mariadb ]==============
	sudo mysql -u root
	CREATE DATABASE wordpress CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci;
	GRANT ALL ON wordpress.* TO 'wp-user'@'localhost' IDENTIFIED BY 'Passw0rd!';
	exit
	==============[ install phpmyadmin by backport repo's ]==============
	echo "deb http://deb.debian.org/debian buster-backports main" >> /etc/apt/sources.list
	sudo apt update
	sudo apt -t buster-backports install phpmyadmin
	PROMPT > web server as autoinstall > APACHE2
	#create public key
	openssl req -x509 -new -nodes -keyout pub.key -out pub.pem

	#create keynodes
	openssl req -new -nodes -keyout nas.key -out nas.pem

	#register keynodes to publickey
	openssl x509 -req -CA pub.pem -CAkey pub.key -in nas.pem -out nas.crt -set_serial 01
	# Stream a video
	ffmpeg -re -i video.avi -vf "scale=40:ih*40/iw, crop=40:16" -f rawvideo -vcodec rawvideo -sws_flags bilinear -pix_fmt rgb24 - > /dev/udp/matelight.cbrp3.c-base.org/1337

	# Loop a gif
	ffmpeg -re -ignore_loop 0 -i image.gif -vf "scale=40:ih*40/iw, crop=40:16" -f rawvideo -vcodec rawvideo -sws_flags bilinear -pix_fmt rgb24 - > /dev/udp/matelight.cbrp3.c-base.org/1337

	# Stream webcam
	# Mac
	ffmpeg -re -f avfoundation -r 30 -s 1280x720 -i "0" -vf "scale=40:ih*40/iw, crop=40:16, pp=autolevels:f, eq=1.5" -f rawvideo -vcodec rawvideo -sws_flags bilinear -pix_fmt rgb24 - > /dev/udp/matelight.cbrp3.c-base.org/1337