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LCD stands for "Liquid Crystal Display" and is commonly known as a screen. The tag should be used for questions related to LCD display.

3 votes
1 answer
13k views

Why does my LCD display random characters?

I've been struggling with my LCD for hours, and after solving more different issues than I can remember, I'm out of ideas for this one. … My LCD is showing random characters, see the picture below (the last character blinks, some characters change and over time there are slowly more and more characters). …
3 votes
0 answers
699 views

Serial does not work when LiquidCrystal library is used

Edit1: With the LCD active (all lines uncommented) I probed all LCD pins with a 'scope and when it is triggered in Normal, I can see that they all have a pulse every time the LCD is updated (I added a … And back to square 1, as the LCD prints random characters now... …