I2C LCD 20x4 PProtoboard problem

[ganimides2017]

Hi guys!, I ran some Arduino 20x4 I2C LCD sample code into FLOWCODE and I noticed that works fine when simulating but when I download to the Arduino UNO nothing happens on display.The backlight is on but no character appears on it.

I´ve modified the famous "I2C address" into the LCD properties to 0x3F running down an address tester but still so it does not work!!!

I connected every wire where it must be.


Can somebody help me with this??.

thank youu!!!

[medelec35]

I have moved your message from the "Tips and Tricks" section as that is meant for sharing your knowledge
Not for starting off with asking questions.

Martin

[Benj]

Please can you attach your Flowcode project file so we can see what you're doing?

[Docara]

Hi

Not sure it your module has one but if it has a small potentiometer to adjust the brightness - give it a tweak. Often LCD modules can be set too bright and the characters don't appear to display

Matt