Overview: Use an Arduino and an ultrasonic sensor to prototype a safety alarm that sounds when someone comes near to the ultrasonic sensor. It has to be used in proper lighting conditions. Pros: Through this project, you will learn to save electricity and how sensors work in realityĬons: You have to be very careful with the LDR sensor. If the weather is bright, the system will be OFF otherwise the system will be ON. The weather is bright or dark, and is sensed through an LDR sensor. Why it’s unique: The LDR gives out an analog value which will then convert to the digital output and pass it to the LED to glow, when the sensor detects the darkness. Overview: This is an amazing project using an Arduino and LED, which will automatically turn on when an LDR sensor detects darkness. Also, there's an LED in the circuit which activates when the buzzer is on, and turns off when the buzzer is off. Get started: In this project, you will use a potentiometer that can read analog values, rather than passing for some specific frequency. So it helps you learn how things work in reality.Ĭons: You have to be careful with the sound, as Piezo sound is a bit loud and annoying. Pros: This can be the prototype of a sound control system. Why it’s unique: In this project, we will study analog inputs/outputs. Overview: Setup an I/O system on Arduino to read sensor data from the potentiometer, and convert it into output using the Piezo element. You will explore how you can use LED and Switch with Arduino Uno.
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