Proton BASIC Community

hi. i am tring to interface a 16 x 4 lcd display with a built in i2c adaptor with a pic18f4550
i cannot find any documentation anyware for it.

the product page says the i2c address of the display is "0x27 or 0x3F"

Hi,
Is that all the information you have, where did you buy it or is it something you had and lost the datasheet.

Regards,
Bob

Quote from: shadowlight99 on May 20, 2021, 02:36 PMthe product page says the i2c address of the display is "0x27 or 0x3F

I wrote a simple scanner to find the addresses of each device connected to the I2C bus

Send a photo of the LCD. Is probably just a standard HD44?? Parallel controller with an I2C interface chip, iv seen quite a few of the for sale on the likes of EBay etc.

The attached two files may help. They were written by George Towler and were on the old forum. Something to work with.
John

I2C demo.zip

i hope it can help to you

http://www.truevision-tech.com/character.html
https://electronics.stackexchange.com/questions/251690/using-16-x-4-alphanumeric-lcd-with-mikroc-pro-for-pic-compiler
https://electronics.stackexchange.com/questions/435370/lcd-16x4-is-shifting-the-columns-of-the-third-and-fourth-lines