This circuit manages precise servo motor movements using an Adafruit PCA9685 PWM Servo Breakout board, interfaced with an Arduino Nano microcontroller. The servos are powered by 18650 Li-ion batteries ...

Hardware Arduino Nano RC522 RFID (SPI) 4×4 Keypad IR sensor (vehicle detect) Servo motor (gate) Buzzer 16×2 I2C LCD (address 0x25) LEDs (Green/Red) Pin Configuration RC522: RST D9, SS/SDA D10, MOSI ...