Pelatihan Mikrokontroler RC via Bluetooth September 2024 Pertemuan 1

Introduction

This tutorial aims to guide you through the basics of using an RC (Remote Control) microcontroller via Bluetooth, as introduced in the first meeting of a training session hosted by ALKA Technology. Understanding how to interface microcontrollers with Bluetooth is essential for creating innovative projects involving remote control functionalities.

Step 1: Gather Required Materials

To start the training, ensure you have the following materials ready:

• Microcontroller (e.g., Arduino, ESP32)
• Bluetooth module (e.g., HC-05 or HC-06)
• Jumper wires
• Breadboard
• Power supply (battery or USB)
• Computer with Arduino IDE installed

Practical Tips

• Make sure your microcontroller is compatible with the Bluetooth module.
• Check that you have the latest version of the Arduino IDE for the best experience.

Step 2: Set Up the Hardware

Follow these steps to connect your microcontroller to the Bluetooth module:

1. Connect the Bluetooth Module:

   • VCC of the Bluetooth module to the 5V pin on the microcontroller.
   • GND of the Bluetooth module to the GND pin on the microcontroller.
   • TX of the Bluetooth module to the RX pin of the microcontroller.
   • RX of the Bluetooth module to the TX pin of the microcontroller.

2. Use a Breadboard:

   • Place the microcontroller and Bluetooth module on a breadboard for easy connections.

Common Pitfalls

• Ensure that the TX and RX connections are not swapped, as this will prevent communication.

Step 3: Program the Microcontroller

You’ll need to write a simple program to enable communication between the microcontroller and the Bluetooth module.

1. Open Arduino IDE:

   • Start a new sketch (program).

2. Write the Code: Here’s a basic example to get you started:

   #include <SoftwareSerial.h>
   
   SoftwareSerial BTSerial(10, 11); // RX, TX
   
   void setup() {
       Serial.begin(9600);
       BTSerial.begin(9600);
   }
   
   void loop() {
       if (BTSerial.available()) {
           char c = BTSerial.read();
           Serial.write(c);
       }
       if (Serial.available()) {
           char c = Serial.read();
           BTSerial.write(c);
       }
   }
   

3. Upload the Code:

   • Connect your microcontroller to your computer via USB.
   • Select the correct board and port in the Arduino IDE.
   • Click on the upload button.

Practical Tips

• Ensure that the baud rate of the Bluetooth module matches the one set in your code (in this case, 9600).

Step 4: Test the Bluetooth Connection

After uploading the code, you can test the connection.

1. Connect via Smartphone:

   • Enable Bluetooth on your smartphone.
   • Search for available devices and pair with your Bluetooth module (usually named HC-05 or HC-06).
   • Use a terminal app (like Serial Bluetooth Terminal) to communicate with the microcontroller.

2. Send and Receive Data:

   • Send commands from the terminal app and observe the response from the microcontroller through the Serial Monitor in the Arduino IDE.

Common Pitfalls

• If you cannot connect to the Bluetooth module, ensure it is powered on and properly connected.

Conclusion

In this tutorial, you learned how to set up a microcontroller with a Bluetooth module, write a basic program for communication, and test the connection. This foundational knowledge will empower you to develop more complex remote control applications in your future projects.

For next steps, consider exploring different commands and functionalities you can implement via Bluetooth, or dive into advanced topics like controlling motors or sensors remotely.