Robotics Bluetooth — Free Robotics Tutorial

Learn Robotics Bluetooth in Robotics with a free, beginner-friendly tutorial, examples and practice for Indian students on Syllab.in.

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TL;DR: Learn Robotics Bluetooth in Robotics with a free, beginner-friendly tutorial, examples and practice for Indian students on Syllab.in.

Written & reviewed by the Syllab.in Academic Team (CBSE/NCERT subject experts) · Updated Sep 1, 2026

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Robotics Bluetooth in Robotics

The HC-05 is a popular Bluetooth module that enables wireless communication between Arduino and phones/computers. It uses serial communication (TX, RX pins).

HC-05 wiring: VCC (5V), GND, TX (to RX), RX (to TX via voltage divider, since HC-05 is 3.3V logic). Use SoftwareSerial to communicate.

A paired phone can send/receive data wirelessly. Common use: mobile robot remote control, data logging, status display.

Robotics Bluetooth — Syntax

#include <SoftwareSerial.h>

SoftwareSerial BTSerial(10, 11);  // RX, TX

void setup() {
  BTSerial.begin(9600);
}

void loop() {
  if (BTSerial.available()) {
    char command = BTSerial.read();
    // Process command
  }
}

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