Qwiic Alphanumeric Display - how to print numbers with "-" on first digit?

Qwiic System
1

Hello, Im using QWICC alphanumeric display. I need to show on lcd values from range:
-100…-1 to 0.

I cant find information how to do it (combination numbers + char)

display.print(-100); - is not working properly

display.printChar(‘-’, 0);
display.print(90);
display.shiftRight(1);

also is not working. 9 is on same position as “-”.

Maybe someone have some idea? :slight_smile:

Im using arduino micro (32u4)

2

I would use

display.illuminateSegment('I', 0);

as shown in the Example_02_TurnOnOneSegment sketch in the Hookup Guide.

3

Though ‘-’ is in the library and should work. It’s on line 75 of the source.

1 Like
4

It didnt work.

display.illuminateSegment('-', 0);

display.print(test);

I have used String and it works. But it takes a lot of memory:
stringOne - value between 10 & 99

String stringDisplay = ("-"+ stringOne);
 display.print(stringDisplay);