2 ways to connect 1 arduino board to another arduino board FREE

2 ways to connect 1 arduino board to another arduino board
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2 ways to connect 1 arduino board to another arduino board

2 ways to connect 1 arduino board to another arduino board


2 ways to connect 1 arduino board to another arduino board. Connecting your phone to an Arduino Uno can be done using various communication methods. Here, I’ll describe two common ways: using Bluetooth and using a USB OTG (On-The-Go) cable.

Method 1: Bluetooth Connection

Requirements:

  1. Arduino Uno
  2. Bluetooth module (e.g., HC-05 or HC-06)
  3. Android phone with Bluetooth capabilities

Steps:

  1. Connect the Bluetooth module to the Arduino Uno. Connect VCC to 5V, GND to GND, TX to RX, and RX to TX. Note that some modules may have different labeling, so check the datasheet.
  2. Power up the Arduino Uno.
  3. Pair the Bluetooth module with your phone. On your Android device, go to Settings > Bluetooth, and pair with the Bluetooth module.
  4. Write an Arduino sketch that reads data from the Serial Monitor and performs actions based on the received data.
  5. Use a Bluetooth terminal app on your phone to send data to the Arduino. You can find various apps on the Google Play Store that allow you to send data over Bluetooth.

Method 2: USB OTG Connection

Requirements:

  1. Arduino Uno
  2. USB OTG cable
  3. Android phone with USB OTG support

Steps:

  1. Connect the USB OTG cable to your phone.
  2. Connect the USB A end of the OTG cable to the USB B port on the Arduino Uno.
  3. Power up the Arduino Uno.
  4. Write an Arduino sketch that reads data from the Serial Monitor and performs actions based on the received data.
  5. Use a serial terminal app on your phone to send data to the Arduino. There are several apps available on the Google Play Store that allow you to communicate with Arduino over USB.

Additional Tips:

  • Ensure that you have the necessary drivers installed for the USB connection method.
  • Double-check wiring and connections to avoid any issues.
  • Modify your Arduino sketch to process incoming data appropriately based on your project requirements.

These methods provide basic communication between your phone and Arduino Uno. The specific implementation details may vary based on the modules and components you are using.

How to connect your phone to arduino uno to turn on the light on the arduino

To control a light on the Arduino Uno using your phone, you can follow the steps mentioned below using Bluetooth communication. This example assumes you have a Bluetooth module (e.g., HC-05 or HC-06) connected to the Arduino Uno.

Requirements:

  1. Arduino Uno
  2. Bluetooth module (e.g., HC-05 or HC-06)
  3. Android phone with Bluetooth capabilities

Wiring:

  • Connect the Bluetooth module to the Arduino Uno:
    • VCC to 5V
    • GND to GND
    • TX to RX
    • RX to TX
  • Connect a simple LED circuit to one of the digital pins on the Arduino, along with a current-limiting resistor.

Arduino Sketch:

Getting Started with Arduino UNO | Arduino

cppCopy code

int ledPin = 13; // Pin connected to the LED

 char command; // Variable to store incoming commands 

void setup() { 

Serial.begin(9600); // Start the serial communication 

pinMode(ledPin, OUTPUT); // Set the LED pin as an output

 } 

void loop() {

 if (Serial.available() > 0) { 

command = Serial.read(); // Read the incoming command

 // Check the command and perform the corresponding action

 if (command == '1') { 

digitalWrite(ledPin, HIGH); // Turn on the LED

 } 

else if (command == '0') {

 digitalWrite(ledPin, LOW); // Turn off the LED }

 } 

}

Android App:

  1. Install a Bluetooth terminal app on your Android phone. Examples include “Bluetooth Terminal” or “Serial Bluetooth Terminal” from the Google Play Store.
  2. Pair your phone with the Bluetooth module connected to the Arduino.
  3. Open the Bluetooth terminal app and connect to the paired Bluetooth module.
  4. Send the character ‘1’ to turn on the light and ‘0’ to turn it off.

Testing:

  • When you send ‘1’ from the app, the LED on pin 13 should light up.
  • When you send ‘0’ from the app, the LED should turn off.

This is a basic example, and you can expand upon it for more sophisticated control based on your project requirements. Note that the communication method and the commands used can be adapted based on your specific needs and the capabilities of your chosen Bluetooth module. 2 ways to connect 1 arduino board to another arduino board.

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Derrick Murehwa
Derrick Murehwa
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