Instructions | PYPRCA - Python Programmable Calculator (computer)

1

Solder PICO module

At first solder Raspberry PICO (or compatible) module, try apply power.
2
Install 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
3

Solder LCD and related SMD parts

Align LCD small corner columns to holes and solder FLEX cable

Solder parts in BACKLIGHT section
4

Copy Circuitpython files

Download DemoFiles from https://github.com/bobricius/PyPrCa

And copy all content to Circuitython drive
5

Check if display working

After RESET If you can BOOT menu all is O.K.
6

Solder 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.
7

Play 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
8

Back to circuitython

Just repeat step 4.

PYPRCA - Python Programmable Calculator (computer)