This is a collection of projects found on the web, assembled my way.

1st - the Arduino Mega to RAM: https://github.com/johnzl-777/SRAM-Read-Write.
2nd - this series of blog's : https://bread80.com/2020/09/04/couch-to-64k-part-3-adding-a-character-lcd-display-to-our-z80-breadboard-computer/
3rd Ben Eater for the 555 clock, for some reason using the mega to clock the Z80 messed things up https://eater.net/8bit/clock

The thing that connects the Mega to the breadboard is my creation(Cobbler) : pins, Red - A0-A15 Yellow - D0-D7 Blue - Control:
https://github.com/titojff/Arduino-mega-to-sram-breadboard-connector

The python code that takes the bin file and makes a header file for arduino IDE with an array with the code to easily be used for the SRAM loader:
https://github.com/titojff/parser-from-bin-to-arduino-header-file-with

Plan in the future to interface to sensors

https://youtu.be/qmdPKBNjJxw