Low Orbit Flux Logo 2 D

How To Connect Raspberry Pi To Laptop Via Wifi

If you’re on this page it is probably because you have a brand new Raspberry Pi. Either that or you have an old one that you just want to connect to wifi. Either way, you are probably asking yourself, “How to connect a Raspberry Pi to a laptop via wifi?” This is pretty easy and we’re going to show you how.

Options:

Before you start:

Add Settings Directly To SD Card

You can directly mount your SD card from whatever system you are working on. Usually, you will be doing this shortly after writing the OS to the card. Make sure the card is mounted.

Setup Wifi

Edit your wpa_supplicant.conf file. Make sure you change the SSID and password. It should look something like the snippet below. Place this in the boot directory on your SD card: /boot/wpa_supplicant.conf.

It will be copied to the correct location on boot. For example it will be copied from /boot/wpa_supplicant.conf to /etc/wpa_supplicant/wpa_supplicant.conf.


ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1
country=US
network={
    ssid="SSIDHERE"
    psk="PASSWORDHERE"
    scan_ssid=1
 }

The SSID is your wifi network and the psk is your wifi password. Note that the group netdev is being given permission to change network settings.

Setup SSH

Create an empty file named SSH in your /boot directory. This file will be found during startup and will tell the system to enable SSH. The path of the file on the system will look like this: “/boot/SSH”.

Start It Up

Find the Raspberry Pi’s IP

You will need to find you what IP address the Raspberry Pi has been assigned. One way you can do this is by running:


arp -a

This should list out MAC addresses and IPs. One of these will be your Raspberry Pi.

Connect with SSH

Connect to the Raspberry Pi using SSH. The default user should be “pi” and the default password should be “raspberry”.

If you are using Linux on your desktop you can just use any of the terminals available. One of my favorites is Gnome Terminal. If you are running OSX you can just use the terminal application and ssh from there. If you happen to be using windows you will probably have to download putty or some other ssh utility.

Command to run from Linux or OSX ( assuming your IP is 192.168.0.5 ):


ssh pi@192.168.0.5

DONE! You’re connected! But there is more you should probably do. Keep reading.

Update Users

You will want to add a new user instead of the default user “pi”. Let’s assume you will call this user “user1” instead of “pi”.

Add a user


sudo adduser user1

Set a password for the new user.


passwd user1

Add sudo access


sudo usermod –aG sudo user1

Just in case, add the new user to the netdev group so that they can change wifi settings. They could still just sudo to run commands as root but if you happen to be using a graphical tool this might come in handy.


sudo adduser user group netdev

Remove the default pi user. Be careful with this. Make sure that you can SSH and use sudo with your new user before removing the default user.


sudo deluser pi

Setup VNC

Install RealVNC:


sudo apt–get update
sudo apt–get install realvnc–vnc–server realvnc–vnc–viewer

Enable it:


sudo rasps-config 

Select the following:

Now VNC should be setup on the Raspberry Pi.

You will need a VNC client. Just download one from real VNC:

If you are running Linux you can just install using a package manager. Debian or Ubuntu should work with this command but other distros may use a different package manager and different package name.


sudo apt install realvnc–vnc–viewer

References