What are AT commands in Bluetooth?
AT commands mode is used to change default settings of Bluetooth module.. When if there some need like to change the BT device name, device role like master or slave, Password of device BT module need to set in AT Command mode and default setting can change.
How do I control HC-05 Bluetooth module?
Follow these mini-steps:
- Connect the Rx and Tx pins of HC-05 back to Arduino (if you haven’t did this already).
- Pair the device with your mobile phone (in my case I am using Android OS and my phone is Samsung SII).
- Download “Bluetooth Terminal” app from Google Play Store.
- Open Bluetooth Terminal app.
How do you use HC-05 in command mode?
For HC05: Type “AT” (without the quotes) on the serial monitor and press enter. if “OK” appears then everything is all right and the module is ready to take command. Now you can change the name of the module, retrieve address or version or even reset to factory settings.
What are the features of HC-05?
HC-05 Specification:
- Bluetooth protocal: Bluetooth Specification v2.
- Frequency: 2.4GHz ISM band.
- Modulation: GFSK(Gaussian Frequency Shift Keying)
- Emission power: ≤4dBm, Class 2.
- Sensitivity: ≤-84dBm at 0.1% BER.
- Speed: Asynchronous: 2.1Mbps(Max) / 160 kbps, Synchronous: 1Mbps/1Mbps.
- Security: Authentication and encryption.
What is command mode?
An operating mode that causes the computer or modem to accept commands for execution.
How does Bluetooth module work?
The Bluetooth technology manages the communication channel of the wireless part. The Bluetooth modules can transmit and receives the data wirelessly by using two devices. The Bluetooth module can receive and transmits the data from a host system with the help of the host controller interface (HCI).
What is the range of HC-05 Bluetooth Module?
Package Includes:
| Input Supply voltage (V) | 3.6 ~ 6 |
|---|---|
| Maximum Operating Range (m) | 10 |
| Operating Frequency | 2.4GHz ISM band |
| Modulation | GFSK (Gaussian Frequency Shift Keying) |
| Emission power | 4dBm, Class 2 |
What is the baud rate of Bluetooth module HC-05 in command mode?
9600
Communication name is HC05, the password is 1234 or 0000 and the transfer baud rate is 9600 by default.
How do I program HC-05 module?
Make sure the HC-05 module is NOT PAIRED with any other Bluetooth device. Re-connect the Arduino Uno 5V wire to the HC-05’s VCC (5V power) pin. The HC-05 LED will blink on and off at about 2 second intervals. Now the HC-05 is in AT command mode ready to accept commands to change configuration and settings.
How many & what are types of AT command?
These commands are classified into four types namely Test, Read, Set and Execution. The test AT command is mainly used for checking the command’s compatibility using a modem.
What is the AT command used for?
In computing, at is a command in Unix-like operating systems, Microsoft Windows, and ReactOS used to schedule commands to be executed once, at a particular time in the future.
What is use of Command Prompt?
In Windows operating systems, the Command Prompt is a program that emulates the input field in a text-based user interface screen with the Windows Graphical User Interface (GUI). It can be used to execute entered commands and perform advanced administrative functions.
How Bluetooth works step by step?
Follow these steps:
- Make sure your Bluetooth headset is fully charged, turned on and compatible with the smartphone you want to pair.
- Turn on the phone.
- Select On (When you turn on the Bluetooth feature, the phone sends out a signal and starts scanning for other Bluetooth–enabled devices, such as your headset)
What is full form of AT command?
AT is the abbreviation of ATtention. Every command line starts with “AT” or “at”. That’s why modem commands are called AT commands.
What type of communication does the hc-05 module support?
The HC-05 Module supports for UART, USB as well as SPI communication and depending on the application, necessary pins can be used. In my case, the board uses the UART communication.
How do I connect the HC05 to the Bluetooth module?
For HC05: Connect the Rx pin of the Bluetooth module to Tx pin of USB to TTL converter, and Tx pin of Bluetooth to Rx pin of converter. Also connect their ground but don’t connect the Vcc yet. First you’ll have to short the key pin with the Vcc. Connect key pin and Vcc together on breadboard, or any other way.
How to change the name of the module in HC05?
For HC05: Type “AT” (without the quotes) on the serial monitor and press enter. if “OK” appears then everything is all right and the module is ready to take command. Now you can change the name of the module, retrieve address or version or even reset to factory settings.
How to configure Bluetooth module in command mode?
In Command Mode, you can communicate with the Bluetooth module through AT Commands for configuring various settings and parameters of the Module like get the firmware information, change UART Baud Rate, change module name, set it as either Master or slave etc.