Parts List

• Arduino UNO Microcontroller (1).

• HC-SR04 Ultrasonic Module Distance Sensor (2).

• 16X2 1602 LCD Display Screen (1).

• 10kΩ Potentiometer (1).

• 5mm 4 pin RGB LED (1).

• 220 Ω Resistor (2).

• Suitable Wires

• (If using wall power) DC 9V Power Adapter (1).

• (If using battery power) 9v Battery Clip with 2.1X5.5mm Male DC Plug (1).

• (Optional) Breadboard Suitable for Prototyping (1).