I just purchased a Qunqi IIC/I2C/TWI 1602 Serial Blue Backlight LCD Module for Arduino UNO R3 MEGA2560. I'm trying to use a library to drive an I2C LED for my Uno R3 provided by the manufacturer. I've installed the library from the manufacturer by going into the software and using the Add Zip Library. The Library shows up in the list. But when I try to use it in the example sketch, I get error messages. It was indicated by other users that the address needed to be changed. The one comment was, "I could only get it to work with fmalpartida "New LiquidCrystal" library from here. https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/Home
The address and wiring is:
#define I2C_ADDR 0x3F
and
LiquidCrystal_I2C lcd(0x3F, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE);"
The unit has not arrived yet, and I wanted to start getting a feel for how to work with it within the software. So the software should compile without the Uno being connected to the computer. Can anyone decipher what the error message means? I don't understand this. I'm very new to the Uno. I've successfully written and executed other programs. This is a new project for me.
error message.txt (18.1 KB)