Simulasi kontrol gerakan servo dengan sensor ultrasonik | mikrokontroler arduino di wokwi.com

Summary

This simulation demonstrates how an Arduino microcontroller, paired with an ultrasonic sensor and a servo motor, functions to create an automatic door-like system. The ultrasonic sensor detects an object within 200 cm, and when an object approaches, the servo motor rotates by 90°, simulating the opening of a door. When the object moves away, the servo returns to its initial position (0°), resembling the closing of the door. The system calculates distance using sound waves, providing real-time responses based on object proximity, making it an interesting example of automation using basic Arduino components.

Takeaways

• 😀 The project uses an Arduino microcontroller to control a system involving an ultrasonic sensor and a servo motor.
• 😀 The ultrasonic sensor detects the distance of an object in front of it by emitting and receiving sound waves.
• 😀 When the object is within 200 cm, the servo motor rotates 90° to simulate the opening of a door.
• 😀 If the object moves beyond 200 cm, the servo motor returns to 0°, closing the door.
• 😀 The distance calculation is based on the time it takes for the ultrasonic sensor's signal to return, using the speed of sound in air.
• 😀 The servo motor is controlled via specific pins defined in the Arduino setup (e.g., pin 6 for control).
• 😀 The system mimics an automatic door, which opens when someone approaches and closes when they move away.
• 😀 The Arduino code defines the sensor's trigger and echo pins for sending and receiving signals from the ultrasonic sensor.
• 😀 The servo motor's initial position is set to 0°, and it adjusts based on the distance detected by the ultrasonic sensor.
• 😀 The system is simple to implement, using readily available components like an Arduino board, ultrasonic sensor, and servo motor.

Q & A

What is the main purpose of the simulation in the script?

The simulation demonstrates how an Arduino microcontroller can control a servo motor using an ultrasonic sensor to open and close a door-like mechanism based on the proximity of an object.

What components are involved in the simulation?

The components include an Arduino microcontroller, an ultrasonic sensor, and a servo motor, with the ultrasonic sensor detecting the distance of an object and the servo motor acting as the actuator.

How does the ultrasonic sensor work in this setup?

The ultrasonic sensor emits a signal and measures the time it takes for the signal to return after bouncing off an object. This information is then used to calculate the distance of the object in centimeters.

What is the role of the servo motor in this simulation?

The servo motor acts as the actuator that moves a door mechanism based on the distance detected by the ultrasonic sensor. When the object is within a certain range, the servo motor opens to a 90-degree angle, mimicking the behavior of an automatic door.

What distance triggers the servo motor to move?

The servo motor is triggered to move when the object is detected at a distance less than 200 cm from the ultrasonic sensor.

How is the distance measured by the ultrasonic sensor calculated?

The distance is calculated using the time taken for the ultrasonic signal to travel to the object and return. The formula considers the speed of sound in the air to determine the distance in centimeters.

What happens when the object moves farther than 200 cm from the sensor?

When the object moves beyond 200 cm, the servo motor returns to its initial position, which is set at 0 degrees.

How is the servo motor initially set in the simulation?

At the beginning of the simulation, the servo motor is set to an initial position of 0 degrees, meaning the door mechanism is closed.

What does the 'trigger' and 'echo' refer to in this simulation?

'Trigger' refers to the pin that sends out the ultrasonic signal, while 'echo' refers to the pin that receives the reflected signal to calculate the distance.

How does the servo motor's angle change based on the sensor's reading?

When the sensor detects an object within 200 cm, the servo motor rotates to 90 degrees. If the object moves away and the distance exceeds 200 cm, the servo motor returns to 0 degrees, effectively closing the door mechanism.