Hi everyone,
Only starting out and was hoping someone could help. I have everything working (including code) on the attached image, but I would like to add a second LED bar graph. Can someone help with the wiring?
Kind Regards,
Steven
Look up 74HC595 shiift register. Here is an example of using the 74HC595.
UNO have not enough pins.
use Arduino Pro Mini for additional A6/A7 or other board
or some sort of pin extender.