Ultrasonic sensor Arduino code with LED. ... // Arduino pin connected to Ultrasonic Sensor's ECHO pin const int LED_PIN = 3; // Arduino pin connected to LED's pin const int DISTANCE_THRESHOLD = 50; // ...

Connect the GND pin of the Arduino to the GND pin of the motor driver module. Arduino Code for Human Following Robot . Here is the simple Arduino and 3 Ultrasonic sensor based Human-following robot ...

Ultrasonic Sensor: GND pin: GND: Ultrasonic Sensor: Trig pin: Digital Pin 5: Ultrasonic Sensor: Echo pin: Digital Pin 6: 9V Battery: Positive: Vin: 9V Battery: Negative: GND: Smart Dustbin Arduino ...

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In Electronics, most of the time Ultrasonic Sensors are used to measure the distance from one particular point to another. It is very easy to write a code on the Arduino board and integrate an ...

3 220 Ω resistors; 1 green LED; 1 yellow LED; 1 red LED; 1 Arduino Ultrasonic Sensor (HC-SR04) 1 buzzer; Ultrasonic sensor, mounting circuit; It is a very simple circuit. On the one hand, we will have ...

code: // C++ code // include the library code: #include // initialize the library with the numbers of the interface pins LiquidCrystal lcd(12, 11, 5, 4, 3, 2); int ultrasonic = 0; long ...

Step 3: Making the Circuit. Now, as we know how the components work, let’s go ahead and assemble theses components together and make a circuit as shown below. The Ultrasonic sensor is powered by 5V ...