1Solder PICO module
At first solder Raspberry PICO (or compatible) module, try apply power.
2Install Circuitpython firmware
Download Circuit python firmware directly from https://circuitpython.org/board/raspberry_pi_pico/
- connect to PC
- hold BOOT button and shortly press RESET
- free BOOT button
- you can found new DISK drive on your computer
- drag&drop downloaded file with uf2 extension
3Solder LCD and related SMD parts
Align LCD small corner columns to holes and solder FLEX cable
Solder parts in BACKLIGHT section
4Copy Circuitpython files
Download DemoFiles from https://github.com/bobricius/PyPrCa
And copy all content to Circuitython drive
5Check if display working
After RESET If you can BOOT menu all is O.K.
6Solder rest of parts
Remaining speaker, you can also solder GROVE connector, SD-Card slot and power switch.
Power switch works as power OFF, pico is default ON, so is not required for initial operation.
7Play with retro computer emulators
It is same like CircuitPython setup in step 4. but instead of circuitpython.uf2 use one of this prepared system firmwares https://github.com/Jean-MarcHarvengt/MCUME/tree/master/MCUME_pico/bin/PICORETROVGA
You can play with all main legendary retro platforms ZX Spectrum, C64, Atari800
8Back to circuitython
Just repeat step 4.