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 ...
I2C protocol in principal can have two masters on the same bus, but this is not a practical or a good practice as the master creates the clock on the databus (SCL) which the data (SDA) is transferred ...