HC-SR04, 1602 LCD (HD44780), I2C Interface (PCF8574T)
[Based on "https://create.arduino.cc/projecthub/codernoob/rgb-led-based-on-distance-ba94f8"]
CalleDieFalle/Arduino-Sonar-Distance-Checker
HC-SR04, 1602 LCD (HD44780), I2C Interface (PCF8574T)
C++MIT