In this video I'll be showing you how you can control the contrast and the back light brightness of a 1602 LCD display with just the Arduino. The contrast is typically adjusted with a variable ...
volatile boolean Pulse = false; // "True" when User's live heartbeat is detected. "False" when not a "live beat". volatile boolean QS = false; // becomes true when Arduoino finds a beat. static ...
//Draw a single character from font at given page (0–3) and segment (column in bytes) //'letter' is the index into font (0 = space) void printCharacter(uint8_t page, uint8_t segment, uint8_t letter); ...