Sandiko sandikodev

Heart Loading Animation

A Pen by Abbos Nurgulshanov on CodePen.

License.

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

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"

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

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

OpenVPN Server and certificate management on MikroTik

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

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

	==============[ 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