ZX Mechtrum DLX

This is a revision version of the Mechtrum ZX Spectrum with a mechanical keyboard.

I have designed a new keyboard PCB to make use of the Wraith Keycaps found on Aliexpress

https://www.aliexpress.com/item/1005006004732837.html?spm=a2g0o.order_list.order_list_main.5.39191802M7KQt1

It supports original 48K spectrum PCB and modern Harlequin boards.

The new Keyboard PCB

https://www.pcbway.com/project/shareproject/ZX_Spectrum_48k_Mechtrum_Keyboard_with_space_bar_9eb1928d.html

These are the thin Keyboard PCB connectors that replace the membranes.

8 way

https://www.pcbway.com/project/shareproject/ZX_Spectrum_keyboard_edge_connector_5_way_452eb7b7.html

5 way 

https://www.pcbway.com/project/shareproject/ZX_Spectrum_keyboard_edge_connector_2e6dd9f3.html

you will also need a way to connect from the main keyboard PCB to the smaller ones and I used 

 
TE Connectivity FLEX CABLE 

5 way A9AAT-0504F  

8 way A9AAT-0804F

from Digikey

The screws used are m3 self tappers