Raspberry Pi + RetroPie = Fun!

"Congratulations! You have discovered the wonderful world of RetroPie- your entire childhood is within reach!"
- RetroPie ORG

Short guide on how to setup RetroPie on Raspberry Pi. My configuration:

• Raspberry Pi 4 (with 4GB ram)
• SD card with 32 GB storage, Class 10

Step 1: Install the RetroPie on your Raspberry! 

I have used the Raspberry Pi Imager its pretty straight forward, "next next" like a typical IT guy shocking his mom by installing her random software.
Detailed and always up to date guide: https://retropie.org.uk/docs/First-Installation/

Step 2: Configure your controller

Simple step, the wizard will guide you. Refer to above link for details and screenshots.

Step 3: Transfer some ROMs

Up to date docs: https://retropie.org.uk/docs/Transferring-Roms/
First i have tried using the "USB-stick" method, but all the running, unplugging and testing quickly forced me to setup WiFi and do network shares.

Quick guide on setting up WiFi without keyboard:

1. Create a file named wpa_supplicant.conf or download a template and change your WiFi credentials.
2. Inside, place the following code (remember to put your WiFi network name and password in ssid and psk parameter):

   country=US
   ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
   update_config=1
   
   # RETROPIE CONFIG START
   network={
       ssid="your_real_wifi_ssid"
       psk="your_real_password"
   }
   # RETROPIE CONFIG END
   

3. Copy the file in /bios/ directory of the SD card you installed Raspberry Pi on.
4. After booting your RetroPie and going to the WiFi menu you should see that you are connected to the desired network and you can see your Raspberry IP address.
5. Now, just access the Raspberry like you would access any same network machine.
   - On Windows: Type \\RETROPIE in any explorer folder. Here i got asked for user and password, the default ones are
   Username: pi
   Password: raspberry
   
   - On Mac OS: open Finder, select "Go" menu and "Connect to Server". Type smb://retropie and hit "Connect".
6. You can directly paste ROMs into the /roms/ directory or do any configuration settings quickly from your computer.

That's it, let the Nostalgia flow! If I missed something or you have a question, drop an email and ill gladly help a fellow adventurer :)