The reason why we pair up TXD on the Bluetooth module with RXD on the Arduino is because the TXD pin is used to transmit data from the Bluetooth transceiver, while the RXD pin is used to receive data on the Arduino.Īlthough the Arduino is using 5V signal levels, and the HC-05 is using only 3.3V signal levels, no level shifting is required on this particular signal. This connection allows the HC-05 to send data to the Arduino. This means the TXD/RXD pins operate at only 3.3V.ģ) Connect the TXD pin on the HC-05 module with the RXD pin (Pin 0) on the Arduino. The HC-05 is powered using 5VDC but includes an on-board voltage regulator that generates a 3.3V supply to power the transceiver. (Click here to view high resolution image) How to Connect the Bluetooth HC-05 to the Arduinoġ) Connect the Arduino’s +5V and GND pins to the bus strips on the breadboard, as shown in the above circuit diagram.Ģ) Power the HC-05 module by connecting the 5V and GND pins to the bus strips on the breadboard. Once you have all the required components, here’s how you need to wire things up: – Arduino UNO (or Mega, Pro, Mini – but in this tutorial we use the UNO)
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |