Network Configuration for Headless Raspberry Pi

These 2 files to be created in bootfs partition of Memory Card on which you have burnt RPI-OS image.

Filename:wpa_supplicant.conf
content of the file:

ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1
country=GB

network={
ssid="SSID"
psk="password"
key_mgmt=WPA-PSK
}


Enter the details of WIFI SSID and Password and save the file.

Second File is to be created : ssh

Make sure its any empty file and without any extension.

After this, insert the memory card into Raspberry Pi and boot.

Boot for the first time may take upto 5 minutes.

After the boot is complete, Raspberry Pi should be automatically connected to WIFI and ssh should be enabled.

You can check any network scanner program on your phone or PC connected to same network to verify the connection of Raspberry Pi.

NodeJS on the Raspberry Pi

 Open-source platform NodeJS enables JavaScript execution outside of a web browser. The use of server-side scripting and command-line tools to power dynamic web sites has swiftly gained popularity among developers.

It is a powerful runtime with high throughput capabilities because of its event-driven architecture. It also makes use of the rapid V8 JavaScript engine, which was primarily created for the Chrome web browser.

 

With your Raspberry Pi, installing the NodeJS runtime is simple and only requires a few instructions.

You will also install NPM on your Raspberry Pi in addition to NodeJS. You'll be able to install more modules using NPM, which is the NodeJS's standard package manager. 

Let us start installation process : -

sudo apt update

sudo apt full-upgrade -y

Download the latest LTS version of Node.js for your Raspberry Pi 4 from the official website of Node.js.

sudo wget -o https://nodejs.org/dist/v18.14.2/node-v18.14.2-linux-armv7l.tar.xz

sudo tar xvf node-v18.14.2-linux-armv7l.tar.xz -C /opt

cd /opt

sudo mv -v node-v18.14.2-linux-armv7l node

sudo ln -s /opt/node/bin/node /usr/bin/node

sudo ln -s /opt/node/bin/npm /usr/bin/npm

sudo reboot

 Once reboot is complete, it is time check the installation.

For that, we have to use the following commands:-

node --version

npm --version

If installation is correct, above commands should show the version of the package installed.

 

That's the end of the installation of NODE.JS and NPM for Raspberry Pi.

 

We used latest Raspbian OS Bullseye on Raspberry Pi 4B with 8GB ram.  

 

Best Virtual Keyboard for Raspberry Pi

Software that simulates a physical keyboard is known as a virtual keyboard.
Hence, if you have a touchscreen, you may mimic a genuine keyboard by just pressing the keys.
If your Raspberry Pi industrial PLC has a desktop operating system but you don't have a physical keyboard, you can click on the keys to mimic a genuine keyboard. 

Onboard Keyboard

Use following shell commands to install onboard virtual keyboard :

sudo apt update

sudo apt full-upgrade -y

sudo apt install onboard

 

Once installation is complete, you can access this keyboard from MENU > Universal Access.

There are multiple options available so that you can configure it as per your requirement.

 

Kodi Matrix on Raspberry Pi

 Kodi is one of the most popular media content manager or Home Theatre System. It is widely compatible with Android, iOS, Windows, Linux and Single Boards Computers like Raspberry Pi.

Today we’ll learn how to install Kodi on Raspberry Pi.

There are different ways to get it working on your Raspberry Pi.

You can install Kodi dedicated OS on Raspberry Pi such as:

1. LibreElec - The Most Lightweight Kodi based OS

2. OSMC - Always updated with Latest Kodi Versions. 

3. XBMC - Customized OS for Kodi

4. RaspEx - Same as XBMC, with more features.

And there are many more.

But if you want to install Kodi on Raspbian OS which is the official operating system, Just use the commands as it is mentioned below : -

1. sudo apt update

2. sudo apt full-upgrade

3. sudo apt install kodi 

4. apt-cache search kodi

5. sudo apt install kodi-pvr-iptvsimple kodi-inputstream-adaptive kodi-inputstream-rtmp kodi -vfs-nfs kodi-vfs-sftp kodi-vfs-libarchive

6. sudo reboot now

These 6 commands will install Kodi and other essentials addon required in general with Kodi.

The Easiest Way: Watch Netflix, Amazon Prime, Hotstar, Voot, SonyLIV on Raspberry Pi

 If you are using Raspbian OS Desktop version, you must have seen that various streaming sites like Netflix, Hotstar, Amazon Prime, Spotify etc are not working.

Just use the following commands as it is :

1. sudo apt update

2. sudo apt full-upgrade -y

3. sudo apt install chromium-browser -y

4. sudo apt install libwidevinecdm0

5. sudo reboot now.

That’s it.

Now enjoy any streaming website in chromium browser installed.

Default Username and Password for Raspberry Pi OS, Raspbian OS and other Linux Distributions

 

Raspberry Pi Distributions	Username	Password
Raspberry Pi OS	pi	raspberry
DietPi	root	dietpi
Lakka Linux	root	root
Kali Linux	root	toor
OpenELEC	root	openelec
Arch Linux ARM	root	root
Debian	pi	raspberry
LibreELEC	root	libreelec
OSMC	osmc	osmc
QtonPi	root	rootme
Ubuntu Server	ubuntu	ubuntu
ROKOS	rokos	rokos
Retropie	pi	raspberry

How to reset password of Raspbian OS for Raspberry Pi

Raspberry pi is very popular single board computer and Raspbian is the official OS for it. 

What if you have lost the password or I should say forgot the password of Raspberrypi. 

 Here are the following steps,very simple, easy to do.

Just do as I mention here, password will be definitiely changed. 

Yes changed, not recovered. I mentioning the steps to change the password if you forgot your password. you can not recover the password as it is stored by OS in encrypted manner. 

So, let start. 

1. First of all, turn off Raspberry PI and take out the memorg card. 

2. Insert memory card in your PC using memory card reader. 

3. There will 2 partitions of your memory card. Open the drive named as "boot". 

4. open file cmdline.txt in notepad or whatever text editor you like. 

5. Don't modify whatever is already written in it. 

But, at the end of the line, add the following :

 init=/bin/sh 

6. Save and close text editor. 

7. Now insert memory card in Raspberry pi and power up it. 

8. Now your Raspberry Pi will start with terminal and with root privileges. 

9. now type the following command and press enter: 

mount -o remount, rw / 

10. Now type the following command: 

passwd pi 

11. Now it will prompt you to set new password twice. 

Enter your new password. Make sure to remember it this time. 

12. Now enter the following commands one by one. these will output nothing. 

But, these are required to change the new password in raspbian. 

13. Type the following command and press enter. 

sync

14. Type the following command and press enter. 

exec /sbin/init

 That's it. Your new password has been successfully changed. 

 One last step it to revert "cmdline.txt" to original one. 

Otherwise it will always start with shell having root privileges and we don't want that. Right ! So Shutdown Raspberry Pi. 

 Take out the memory card and put back into the computer. 

open the cmdline.txt from drive named as "boot". 

remove the part "init=/bin/sh" we entered at the end of the line. 

Save the file. 

Close Text editor. 

And now re-insert this card into Raspberry pi. 

Power-up Raspberry Pi. 

 You are good to go with new password now.