RGB LEDs Digital Inputs Active_buzzer PASSIVE BUZZER MODULE Tilt Ball Switch Servo DHT11 Temperature and Humidity Sensor Analog Joystick Module Water Level Detection Sensor Module Real Time Clock Module Sound Sensor Module RC522 RFID Module LCD Display Thermometer Eight LED with 74HC595 The Serial Monitor Photocell 74HC595 And Segment Display Four Digital Seven Segment Display Stepper Motor CHANNEL RELAY MODULE