Dear All, I Planning to make a 7 Segment LED Display board Showing item list of 80 items. I have to display value of each 80 line items in 4 digit, So thinking to use 4 Digit 7 Segment display. Driver IC will be Maxim7221. We know one Maxim7221 can drive upto 8 digits. So I have to use 40 no. of maxim7221.
example of board like;
Item 1 - 0000 (0000 is 4 bit 7Segment Display) Item 2 - 0000 Item 3 - 0000
. . . .
. Item 80- 0000
Now I have 2 Question?
Which Arduino board you suggest me to adopt? ( I think 2 Mega, Master/Slave)
Can I use Arduino single "Clk pin" for all 40 no. of Maxim7221 (Pin no. 13) ?
Thanks in advance