How easy would it be to expand this to 6 digits, 2 more for the seconds? If I added another 595 and tied it to D3 and D4 of the Arduino, how would that 3rd 595 connect to the other shifts?
How easy would it be to expand this to 6 digits, 2 more for the seconds? If I added another 595 and tied it to D3 and D4 of the Arduino, how would that 3rd 595 connect to the other shifts?