Printing White Boxes on LCD

Other Hardware Displays
1

Now, I've seen a lot of people have problems like "My LCD only prints white boxes and I want them gone", I don't want that. I want to make the white boxes without using custom characters. Is there a way I can do this?

2

Welcome to the forum

Why the reluctance to use a custom character ?

3

I've used the max amount of custom characters on my display already

4

I found out how to do it. If I use
lcd.print("");
I can print a white box.

5

For some reason the symbol I used doesn't show up here.
If anyone else want to do this, I used a binary to text converter and wrote in 00001000. The symbol that comes out should be a questionmark in a box.
Then I copied that symbol and pasted it into lcd.print();

Edit;
Nvm, turnes out it just uses a custom char insted of printing a white box

6

If your 1602 or 2004 display uses the Asian character set (as most do) use
lcd.write(0xff);
to print a white box.

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2 Likes
7

As you have discovered, using a custom character of 8 through 15 just replicates the custom characters 0 through 7. This can be convenient if you want to embed custom character 0 into a text string.

Do you have all eight custom characters being displayed at the same time? You can redefine a custom character at any time, so you can swap around custom characters that will never be used at the same time.

8

Thanks, but when I use it it prints a weird inverted P. Do you know what I can do to fix it?

Edit:
Turnes out that it works on my fysical LCD and not my digital one witch is realy anoying, but the digital one isn't that important.
Thanks again

Edit 2:
I wrote down all the symbols I got on the digital version, hope this helps anyone who has the same problem

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image491×724 4.26 KB

10

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