[hamix]

Hi,
I found LCD I2C address as 0x3F.
The LCD worked.
Step 1 was passed.
Thanks.

HI

Your user config options semms ok.
Almost all serial LCD modules by default use address 0x27.
The best way to find it is using the attached Arduino sketch. It will show the address of all I2C modules in your RX unit.

You should get something like this:

Scanning...
I2C device found at address 0x27 !
I2C device found at address 0x57 !
I2C device found at address 0x68 !
I2C device found at address 0x77 !
done

0x27 -> LCD module
0x57 -> Eeprom on RTC module
0x68 -> RTC
0x77 -> BMP180 or BMP085 module

Also check if you have not reversed SDA and SCL lines.