https://www.photonicsguy.ca/ 2026-04-06T20:40:50+00:00 https://www.photonicsguy.ca/ https://www.photonicsguy.ca/_media/wiki/dokuwiki.svg text/html 2014-11-13T18:50:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.photonicsguy.ca/arduino/lcd?rev=1415904614&do=diff LCD Display MJKDZ I2C board from eBay. Notes: * eBay search for board * * I2C address is actually 0x20, not 0x27 * I'm using the New LiquidCrystal library * Need pull-up resistors on SDA and SCL lines (A4 & A5 pins) Test Code #include <Wire.h> #include <LiquidCrystal_I2C.h> #define lcdAddr 0x20 // set the address of the I2C device the LCD is connected to // create an lcd instance with correct constructor for how the lcd is wired to the I2C chip LiquidCrystal_I2C lcd(lcdAddr, 4, …