On a side note,
I've found a way to make the Menwiz Lib work with the Adafruit I2c backpack.
You need the following:
Adafruit LiquidTWI2 library available here GitHub - lincomatic/LiquidTWI2: A lean, high speed I2C LCD Library for Arduino, which supports MCP23008 and MCP23017
Make these changes to MENWIZ.H
//#include <LCD.h>
and
//MW_LCD* lcd;
LiquidTWI2* lcd;
Make this Change to MENWIZ.CPP
//lcd=(MW_LCD*)l;
lcd=(LiquidTWI2*)l;
Make these changes to your sketch
//#include <LCD.h>
//#include <LiquidCrystal_I2C.h>
#include <LiquidTWI2.h>
and
//LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE);
LiquidTWI2 lcd(0);
and
lcd.setMCPType(LTI_TYPE_MCP23008); // add this at the top of void setup()
Hope this helps someone.
--EDIT--
I found the MENWIZ lib changes in a blog that originally made them work with the LiquidTWI library, when trying to figure out how to make the Adafruit I2c backpack work with LiquidTWI I stumbled on their fork. I do not know the name, nor can I find the blog I found the original information on. My I'd give credit if I could find it.