Please add a link in your github project description page!
3 things I could learn from it:
1) A confusion arises (when there are no docs) which ground (and power for the Arduino) to use: from an USB connected cable to the Arduino or the XT computer. It uses the power and ground from the XT computer.
2) All grounds are connected together on the breadboard
3) A code modification if it does not work:
if (digitalRead(xt_clk) == LOW)
{
delay(999) ;
_write(0xAA) ;
}
This is an interesting article:
http://www.ccgcpu.com/2019/02/14/the-xt-part-4-adapting-a-modernish-keyboard/
Please add a link in your github project description page!
3 things I could learn from it: 1) A confusion arises (when there are no docs) which ground (and power for the Arduino) to use: from an USB connected cable to the Arduino or the XT computer. It uses the power and ground from the XT computer. 2) All grounds are connected together on the breadboard 3) A code modification if it does not work: