Hotspot Install Anleitung

Setup a wifi hotspot with a Raspberry Pi

What you need:

• Raspberry Pi 4
• USB-C Power Cord
• SD-Card
• A Computer with an SD Card reader

Step 1: Clone SD Card

• Insert SD Card into computer
• Download image from: https://seafile.rlp.net/f/972ddd1625904263aef7/
  • Unzip the file (should be around 7.68 GB when unzipped)
• Download https://etcher.balena.io/ or https://www.tweaking4all.com/software/macosx-software/applepi-baker-v2/
  • clone the image to the SD card

Step 2: Turn on PI

• Insert the cloned SD Card into the raspberry Pi and plug the power after that
• You should see a red turn on constantly and green led blink
• After around 30 secs. you should see a wifi coming up called garden1
• when connected to the wifi you should see this window pop up

Step 3: Connect to PI through SSH

(this only works as long as you are on the Garden1 wifi)

• Now things will become a bit more tricky, because we need to use the command line (here is a free tutorial on the basics: https://www.codecademy.com/learn/learn-the-command-line)
• Open the terminal on your computer and type
  • ssh garden@garden.local
  • When asked for the PW type: master2023

Step 4: Make changes to the website

I used this setup, so there is a lot more to read on here: https://github.com/Splines/raspi-captive-portal

• when on the Pi you can make changes to the website by
  • cd raspi-captive-portal/
  • cd server/public/
  • sudo nano index.html

How to transfer files from computer to Pi?

• First exit the pi via the terminal to get back to your computer. Do this with the following line:
  
• exit and press Enter
• Now you should be back at your computer. After that, use the following line to upload a HTML to the pi. Make sure that your computer is still connected to the pi's wifi.
• scp /path/to/your/index.html garden@garden.local:~/raspi-captive-portal/server/public

How to change the WiFi name

• Make sure that you are connected to the pi's wifi
• Open the terminal and connect to the pi via the following line
• ssh garden@garden.net
• Accept by pressing Y and Enter
• Enter the password master2023
• Edit the access point configuration file via the following line
• sudo nano /etc/hostapd/hostapd.conf
• Search for the line ssid=wifiName, change the name to your desired name and remember it (e.g. ssid=newWifiName)
• Press control+X, enter Y for "Yes" and press Enter to save your changes and to exit the editor
• Now open the dhcpcd configuration file via the following line
• sudo nano /etc/dhcpcd.conf
• Search for the line denyinterfaces xyz or add this line below the existing lines
• Make sure to replace xyz with your chosen name (e.g. denyinterfaces newWifiName)
• Press control+X, enter Y for "Yes" and press Enter to save your changes and to exit the editor
• Restart the pi with the following line
• sudo reboot
• Reconnect to your pi's wifi. The name should be the new one now (e.g. newWiFiName)