Well, this project really deserves our attention!
Blogger Smittytone recently published part I of his “Sinclair ZX81 reviving“ project using a Raspberry Pi and an Arduino.
In a nutshell: the Raspberry Pi works as the ZX81 brains and Arduino does the ‘keyboard job’ of translating the odd-4×10-matrix keyboard of the Sinclair tiny wonder.
Kindly, the author added the Arduino code required to glue together the ZX keyboard and the Raspberry Pi.
Last goal is to put all this stuff together INTO A Sinclair ZX81 original case!
Looking forward for second part!