Retro keyboard.

Iin 2016, Wichit Sirichote created learning kits for different types of microprocessors, including the Z80 : 

This kind of kit is very interesting but suffers from some problems in my opinion. The first of these, and certainly the most important, is the keyboard. The tactile switches used are not suitable for precise, regular and comfortable typing. These are front panel switches, intended to configure a device, but certainly not to serve as an element of 'dialogue' with a computer. 

I'm not even talking about the self-adhesive plastic film where the key symbols are printed. It just makes typing painful : 

So I decided to create a keyboard equipped with real input keys. For this, I start by creating a prototype of what should be the type of keyboard that I will use for my future developments :

After a few days of waiting, I received the printed circuit board and soldered the components that will allow me to perform the programming of the on-board microprocessor :

Why an embedded microprocessor on this keyboard? Because this will allow the development of a keyboard, I hope, adaptable to a large number of materials, without having to recreate it each time.