Thank you!

1. Install RetroPie on the 2W, no HAT, latest version for Raspi 2/3 (NOT zero!)

2. Install fbcp-ili9341 driver, with these CMAKE flags per the PinkyPiX build:

cmake -DWAVESHARE_ST7789VW_HAT=ON -DSPI_BUS_CLOCK_DIVISOR=6 -DSTATISTICS=0 -DBACKLIGHT_CONTROL=OFF ..
make -j

3.  Install Retrogame GPIO driver. /boot/regtrogame.cfg copied from PinkyPiX image (below) ,  driver from https://github.com/adafruit/Adafruit-Retrogame

# PinkyPi X v1.0

LEFT 16 # Joypad left
RIGHT 13 # Joypad right
UP 5 # Joypad up
DOWN 6 # Joypad down
A 21 # 'A' button
B 20 # 'B' button
X 15 # 'X' button
Y 12 # 'Y' button
SPACE 19 # 'Select' button
ENTER 26 # 'Start' button
L 23 # Left shoulder button
R 14 # Right shoulder button
H 3 # Hotkey Button

4. Edit /etc/rc.local, adding the following before the last "exit 0" line:

sudo /home/pi/fbcp-ili9341/build/fbcp-ili9341 &
sudo /usr/local/bin/retrogame &

5. Added  /etc/udev/rules.d/10-retrogame.rules with contents:

SUBSYSTEM=="input", ATTRS{name}=="retrogame", ENV{ID_INPUT_KEYBOARD}="1"

Reboot, add roms, and play!

So far testing yields a pretty capable little system - I don't have a good quantification of battery life on the upgraded hardware, but solid >30FPS on most emulators before N64 looks pretty cool in such a tiny package! I've ordered the SNES case from the site to complete the build - my train commute just got more fun :P

Thanks all!

Well I sat down and started again following the instructions and now it works! I don't know where I was going wrong I think frustration got the better of me! Thanks for your help!

Awesome! I am glad to hear you got it working, now the fun begins! =)

OK I will give that a go. I have already tried this but I my be doing something wrong!

Do you have an example of what wpa_supplicant.conf should contain?

Yes from our guides section

https://www.crackedconsole.com/2019/03/26/configuring-retropie-to-connect-to-wifi-with-no-keyboard-or-display/

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

# RETROPIE CONFIG START
network={
    ssid="Your-network-name"
    psk="Your-network-password"
}
# RETROPIE CONFIG END

Do you have an example of what wpa_supplicant.conf should contain?

Hi yeah I have done that with the 1.54" screen. There in nothing that shows up. I can't seem to attach a picture  to show you!

If you re-flash the image to the SD card, and try again from your PC by creating the wpa_supplicant.conf in the boot folder, before using it in your Pi. It should work, be sure to change the Country Code and assure the data is saved in the file before booting your Pi with it.

@crackedconsole 

Thanks for the reply. The wpa_supplicant file is empty! I'm not sure what to do to be able to access it! 

I tried adding a wpa_supplicant folder with all the information to my boot folder with a windows pc using notepad ++ but I couldn't get that to work! 

If you can hook a keyboard and display up to it, you should be able to use nano (editor) to modify the wpa_supplicant file

sudo nano /etc/wpa_supplicant/wpa_supplicant.conf

And then make your changes

Thanks for the reply. The wpa_supplicant file is empty! I'm not sure what to do to be able to access it! 

I tried adding a wpa_supplicant folder with all the information to my boot folder with a windows pc using notepad ++ but I couldn't get that to work!