LED Light Triggered by Ultrasonic Sensor

Original Source: https://www.arduino.cc/en/Tutorial/BuiltInExamples...

In the source, the author uses an ultrasonic sensor to detect distances. The idea is great and easy to understand, but his product lack usage. Therefore, I decided to add LED lights to the original product. The author of the original source coded and drew the circuit diagram of the ultrasonic for me. To extend, I coded the LED light to turn it on when the ultrasonic detects a distance lower than 30 centimeters. Moreover, I modified the original circuit diagram to fit our ultrasonic sensor; I also created the circuit of the LED light. I must modify the original circuit diagram as the author's ultrasonic sensor varied from ours. I need to create a new circuit from LED light to fit my new codings. My extended codings and circuit create a purpose for this new product and make it better.

Modified Code: https://create.arduino.cc/editor/derrick_0723/2398...

1. Dedicated wiring*1: used to connect Leonardo Board to the computer for uploading code.

2. Leonardo Board*1: used to run code.

3. Wires*8: used to connect LED light and ultrasonic sensor.

4. LED light*1: used to shine when the ultrasonic sensor detects distances.

5. Ultrasonic Sensor: used to detect distances.

6. Computer: used to code your Leonardo Board.

1. Download the code from the original source: https://www.arduino.cc/en/Tutorial/BuiltInExamples...

The original source is using an ultrasonic sensor to detect distances.

Modify the original code by adding an output, which is the LED light for me. The output can give the product usage and purpose.

Modify the original circuit.

1. The author of the original source uses a different ultrasonic sensor, which only has 3 wires to connect. Mine has 4 wires to connect, shown in the second picture. The SIG wire in the original source is split into 2 in my product. Therefore I connect my wires to pin 6&7, where the original author only connect to 7.

2. Because I added an LED triggered by the ultrasonic sensor, I added a LED in my circuit.

Decorate your final product and upload your code then you're finished!

Youtube Link: https://youtu.be/qLPDCt4acZM