ARDUINO BLUETOOTH SERIAL
Serial.begin(9600) //Sets the data rate in bits per second (baud) for serial data transmission Program char data = 0 //Variable for storing received data Now you can control the LED using the app. Open the app and connect to the HC-05 device. This app will act as a Bluetooth remote controller for Arduino. Hope you installed this app from Google Play Store. Negative pin of LED – GND pin of Arduino Uno.Positive pin of LED – Pin 13 of Arduino Uno.VCC pin of HC-05 Bluetooth – 5V output pin of Arduino Uno.GND pin of HC-05 Bluetooth – GND pin of Arduino Uno.TXD pin of HC-05 Bluetooth – RXD pin of Arduino Uno.RXD pin of HC-05 Bluetooth – TXD pin of Arduino Uno.Similarly if this pin is set LOW, the module will be in data mode.Ĭircuit Diagram Interfacing HC-05 Bluetooth Module with Arduino Uno Description If this pin is set HIGH, the module will be in command mode. EN/KEY : This input is used to switch between command and data mode.And it is used push out data send by the connected device when the module is in data mode. This pin is used push out responses to AT command when the module is in command mode. And it is used to send data to the connected device when the module is in data mode. This pin is used to send AT command when the module is in command mode. But when the module is paired or connected to a device, the state pin will be in HIGH state and the on-board LED will be flashing with a delay. When the module is not connected, this pin will be in LOW state and the on-board LED will be flashing fast. STATE : State pin indicates whether the module is connected or paired with a device.Pins : STATE, RXD, TXD, GND, VCC, KEY/ENABLE.Configurable in both master and slave modes.Integrated antenna and an edge connector.
Operating Voltage : 4 V to 6V (have internal 3.3V regulator).
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