3 digit 7 segment leds - library

Other Hardware LEDs and Multiplexing
1

Using a nano I want to use say 15 pushbutton and when pressed the 7 seg display refreshes first and then displays the number allocated to that button. Say 4 or 15

Is there a library that covers this type of use, and not have to set up each 7 seg led
Have searched but not coming up with a straight forward answer.

Thanks

Charles

2

Hi Charles. Your description is pretty vague, but maybe the SevSeg library is what you need.

For SevSeg library and 3 digit display you will need 10 Arduino pins. For 15 pushbuttons, another 8 pins. Have you figured out if Nano will have enough pins for your project?

3

there are a lot of 7 segment libraries. You must use the ones fitting to your setup.
So please provide a good schematic what you have connected to your Microcontroller and we can point you in the right direction when we know what kind of 3 digit 7 segment you have (datasheet needed, at least you should know if it is common cathode or common anode).