Introduction: Bluetooth Module(HC-05) With Raspberry Pi Pico.

By

Wireless communication is swiftly replacing the wired connection when it comes to electronics and communication. Designed to replace cable connections HC-05 uses serial communication to communicate with the electronics. Usually, it is used to connect small devices like mobile phones using a short-range wireless connection to exchange files. It uses the 2.45GHz frequency band. The transfer rate of the data can vary up to 1Mbps and is in range of 10 meters.The HC-05 module can be operated within 4-6V of power supply. It supports baud rate of 9600, 19200, 38400, 57600, etc. Most importantly it can be operated in Master-Slave mode which means it will neither send or receive data from external sources.

Supplies

1. HC 05 Bluetooth module.

2. Raspberry Pi Pico

3. Jumper wires

Step 1: Connect HC05 Bluetooth Module With Raspberry Pi Pico As Shown in the Diagram

Step 2: Download Serial Bluetooth Terminal App

Link - https://play.google.com/store/apps/details?id=de.kai_morich.serial_bluetooth_terminal&hl=en_IN&gl=US

Step 3: Connect RPi to Your Pc ,save the Code As BT.py and Run It.

from machine import Pin,UART

uart = UART(0,9600)

while True:
    # print('checking BT')
    if uart.any():
        command = uart.readline()
        print(command)

Attachments

Step 4: Open Mobile App and Connect to the Bluetooth Module.

Step 5: Output