Arduino 16x2 LCD Black Boxes - Arduino Stack Exchange
Apr 25, 2015 · I hooked up a 16x2 Arduino compatible LCD yesterday and made sure all the connections were according to the program and the schematics provided all over the web. My …
Why does my LCD display random characters? - Arduino Stack …
Sep 18, 2015 · The LiquidCrystal library includes known-good example code, that's part of what Arduino is for. Go ahead and use that as a diagnostic to check the LCD works, before …
Print string and integer LCD - Arduino Stack Exchange
In order to print something that contains both strings and integers, the most straightforward way is to convert each piece to an Arduino string and then concatenate them, using the + operator …
Simple LCD countdown timer - Arduino Stack Exchange
May 1, 2021 · I tried to modify the basic "hello-world" sketch for the LCD that is a part of the examples section in the IDE. I intended to make a countdown timer using the LCD. The …
arduino uno - Why is my LCD 16*2 is not displaying any characters ...
Aug 5, 2014 · Recently I have linked up a typical 16*2 LCD (Liquid Crystal Display) display to my Arduino Uno and have linked all the pins up. Here is my connection: (LCD pin first)
Infamous white squares for LCD display - Arduino Stack Exchange
Nov 15, 2020 · The description of the pin map does not seem to match your call legend in the lcd constructor on line. It is difficult to tell what you have wired without the right angle on the LCD …
I2C LCD displaying weird characters - Arduino Stack Exchange
Jan 2, 2016 · I have connected an LCD with an I2C backpack to my Arduino Uno but it prints the wrong characters. The weird thing is that it worked fine for a while and when I updated the …
How to read data directly from lcd display - Arduino Stack Exchange
My problem: I need to read the information of a lcd 20x4 display, which is controlled by a PLC (which has the protected hex code), and send the data through the serial port. For this I am …
Arduino LCD is displaying gibberish, sometimes
Arduino LCD is displaying gibberish, sometimes Ask Question Asked 8 years, 9 months ago Modified 8 years, 9 months ago
arduino uno - How to limit backlight LED current in 16x2 LCD
Jan 12, 2022 · The two pins on the LCD which are marked "LED" are directly connected to the backlight LED. If you drive an LED over its forward voltage the current is rising exponential in …