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Questions tagged [hc-05]

HC‐05 module is Bluetooth SPP (Serial Port Protocol) module. Use HC-05 to communicate with any device with Bluetooth functionality like a Phone, PC or Tablet.

HC‐05 module is Bluetooth SPP (Serial Port Protocol) module. Use HC-05 to communicate with any device with Bluetooth functionality like a Phone, PC or Tablet.

114 questions
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1 answer

Can't get STM32F103RB usart1 to communicate with hc-05

I am unable to connect USART_1 with bluetooth hc-05. The Microcontroller is STM32F103RB. Here's the code (I am not using any library) #define APB2_FREQ 72000000 void USART1_Send(char* data) { unsigned int length = 0; while(data[length]…
Muzahir Hussain
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3 answers

Connect Unity Game with [ Arduino + Bluetooth module (HC‐05) ] Or ESP32

I want to connect my Unity 3D Game with Micro-controller Like Arduino through Bluetooth and for that I'm using a (HC‐05) Bluetooth module. And for that there is one plugin named Arduino Bluetooth Plugin Link in the asset Store. And Charge is 19$. Is…
Srushti Khunt
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5
votes
3 answers

Connecting hc-05 with iPhone SE iOS(v11.0)

I have done some research on core bluetooth framework. Successfully setup discovery of peripheral of other iPhone, connect, discovered services and characteristics and write some values. All went well. Surprisingly come to know there is apple MIFI…
maddy
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4
votes
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How to remove the password of HC-05 Bluetooth Module?

I want to build an app in which a user can connect with Bluetooth to the HC-05 Bluetooth Module. Is there a chance to disable/remove the password of the HC-05 Bluetooth Module with AT-Commands? So that the user only clicks the Device-Name in the…
Tobibell
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3
votes
1 answer

Bluetooth HC-05 module - why are there two COM ports?

Why are there two COM ports after connecting the Bluetooth HC-05 module to my PC running on WIN10? See this image from device manager: For sending data I use only one of them but I have to check it before which is correct. I have no idea what the…
user15507343
3
votes
0 answers

Bluetooth HC-05 and Arduino stopping working after sent data

I am trying to build a rover controlled by an Arduino with a Funduino Motor Control Shield, and a Bluetooth HC-05 module. However, whenever I send data to it by pressing a button on the GUI that I have created in Processing, the Bluetooth receives…
EthanVB123
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HC-05 5.0 20220104 AT+INIT gives an Error [0]

I bought the HC-05 version 5.0-20220104 module, but it gives AT+INIT error and when I send AT+INQ command, RSSI does not work properly and always shows FF9C constant value! I have the old 4.0-20190815 HC-05 module I bought before and it works…
Mete
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Bluetooth HC-05 not pairing to another HC-05 module

I have two HC-05 modules and want to communicate between them (one in master mode, the other as slave). I have the Module types with EN pin ans a little button on the PCB. Both Modules, I resetted with the ORGL command, so they both have default…
andre hulle
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2
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1 answer

Problems with extracting data from Bluetooth input stream, using android tablet and HC-05 radio transmitter

I have a project where I have an HC-05 radio transmitting about 500 to 800 characters of XML formatted data every 1 second. I receive it in an android app, convert it to a String then process the XML using XmlPullParserFactory. Everything works…
edgar_wideman
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2
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1 answer

Pair an ESP32 to an HC-05 BT module

I want to set an ESP32 microcontroller as master and make him connect to a HC-05 bt module. I am using the examples SerialToSerialBTM.ino of the Arduino IDE,but if put the MAC address of the Bluetooth Module it print "connected successfully" in the…
Marco Ruocco
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2
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1 answer

ATMEGA328P-PU takes upload, but cannot communicate through Serial

I am using Standalone ATMEGA328P-PU to get the accelerometer data from mpu6050 and send to to Serial at baudrate 115200 and also it sends the data to another serial(to HC05 bluetooth module). But the problem is that sometimes I am facing a strange…
Agniva Dutta
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MSP430-HC05 There is nothing at Serial Monitor

I'm trying to send AT commands to HC05 for get other device names and rssi values.I'm using MSP-EXP430G2ET and HC05 module, pin connections are: MSP HC05 RX(P1.1) TX TX(P1.2) RX GND GND 3.3V VCC EN and STATE pins are empty. (I don't…
Mert Yavuz
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Android Studio asking for bluetooth permission check even though it's already present

See lines 94-95 in mainactivity file. **bluetoothSocket = bluetoothDevice.createRfcommSocketToServiceRecord(MY_UUID); bluetoothSocket.connect();** inputStream = bluetoothSocket.getInputStream(); Am receiving this error: "Call…
developpy97
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Two Arduino HC-05 over Software Serial communication not working

I am currently working with 1. Master Hc-05 on Arduino Mega and 2. Slave Hc-05 on Arduino Nano where the Nano is sending integer to the Mega. I have already configured the AT command such that for the Master HC-05: AT+ROLE=1 AT+CMODE=0 AT+ADDR= (was…
thetaisnew
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how to send and divide information into individual textview (Hc 05)

I am trying to make an application that connects to the arduino using the HC 05 module with three ultrasonic sensors. I was able to connect to the application and receive information from a particular sensor. But when I display the distance…
Jezdi
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