I searched information on this forum without success for my project. Perhaps that somebody who have some knowledge in electroni can help me. Thanks in advance.
My problem is simple. - I have a Shit Register 74HC595 to manage a LCD screen (I use the LCD3Wires library) - I have a Shift Register 74HC595 to manage some LEDs - I have a Shift Register 74HC165 to manage some buttons
For each Shift Register, I use 3 wires (Clock, Latch and Data), so a total of 9 wires :'(
I think that it's possible to optimize that and use less wires but I don"t want to use the I2C port.
I thought that I can use the same wire for the 3 Shift registers. If it's possible, it will be a good deal for me because with 7 wires, I could manage my LCD, 8 Leds and 8 Buttons.
Do you thing that's possible?
Here is a schematic of my dream: h t t p : // twitpic.com/1tlybb/full
Perhaps,a better solution exist? Thanks in advance.