This is an Arduino library for HD44780 LCD display, operated in 4 bit mode over I2C bus with 8-bit I/O expander PCF8574 The smart car parking system uses an ESP32 microcontroller, an IR sensor, a ...

Components Required: Arduino Uno RFID Reader (RC522) Servo Motor (SG90 or similar) 16x2 LCD (I2C or parallel interface) 3 LEDs (Red, Yellow, Green) Piezo Buzzer (2 pins) Resistors (220Ω for LEDs) ...