Lab Seven

Lab Seven 🍁

Ultrasonic Ranging, Infrared Remote

Linyun Liu

Project 1

Design and construct a circuit with an ultrasonic ranging module (HC-SR04), a buzzer, an LED bar (or multiple LEDs), and other necessary electronic components. When an object gets close to the HC- SR04, the circuit increases the number of lit LEDs and plays higher tones (i.e., (low) Do-Re-Mi-Fa-So- La-Ti-Do (high)). When an object goes away from the HC-SR04, the circuit decreases the number of lit LEDs and plays lower tones.

• LIST OF HARDWARE:

LED Bar, Ultrasonic (HC-SR04), Buzzer, NPN transistor, 1kΩ Resistor, 200Ω Resistor, Jumpers, ESP32

• CIRCUIT DIAGRAM:

• BREADBOARD VIEW:

• PHOTO OF SETTING ON THE BREADBOARD:

• VIDEO:

• SOURCE CODE:

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Project 2

Design and construct a circuit with an infrared remote, a buzzer, a motor (DC motor, servo motor, or stepper motor), a NeoPixel, and an LCD1602. By pressing various buttons on the infrared remote, their corresponding electronic components respond with some sound, spinning, light LEDs, or a message on the display. Capture your settings and working circuit in photos and videos (the videos should include sound).