LCD I2C and Picaxe

[manuel_sb_06]

I'm trying to program a LCD I2C, with Microcontroller Picaxe and I can not display a text on the screen.

Someone already progammed a PICAXE for I2C chip LCD PC8574T?

Controller LCD I2C

 

[AllyCat]

Hi Manuel,

Yes, somebody asks about driving one of these displays every few months on the forum, for example as in this thread.

But beware that the task is not easy, because they are not all exactly the same. Also, they cannot be directly driven by "text" (strings) in commands, but only by invidual ASCII character codes written via quite complex (and slow) multiple subroutines.

Good luck, Alan.

 

[manuel_sb_06]

Thanks AllyCat.
Yes already I see, Only I need an example, because not I understand.

 

[inglewoodpete]

The code called ScreenTest.bas in this post by forum member "Struggles" should work, although I have not tested it.

The code is well documented but you will need to read and understand what it is doing. I suggest you print out the code and work through it methodically until you understand what it is doing.

 

[eggdweather]

I've found finding the I2C address is quite important to get the display working and most use #27 but the address varies depending on whether your using a 16x2 or 20x4 display.

 

[manuel_sb_06]

Much thanks inglewoodpete this will be very helpful.

 

[manuel_sb_06]

If the address is very important for communicate, I really appreciate you help eggdweather.