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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.

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Arduino to PC secure bluetooth connection(cryptography)

I'm using an Arduino Uno to build a smoke detection system, which works. Since I have to do an IoT project, I have to establish a secure connection with a device (I thought with my smartphone, or my PC), and I'm using a Bluetooth module HC-05 to do…
Giannie Joe
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HC-05 Bluetooth module help, can not recieive data

I am writing some code for my arduino nano and I am using an HC-05 module for wireless transfer of data. I am sending my data as such. This is from the serial monitor, using a usb and regular print statements. I want to be able to recieve this data,…
Vishwaa Kannan
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Pi Pico Bluetooth Communication - HC05 AT commands don't work

I am trying to set up Bluetooth communication between two pi pico devices using HC05s. I am trying to make the two HC05s connect and I read that you need to set up Master/Slave configurations using AT commands. (Get the Bluetooth address from one…
kak_taki
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HC-05 Multiple data sending to android studio app

I'm trying to make android applications with the hc 05 module and 3 ultrasonic sensors. It consists in the fact that each sensor sends information about the distance from the obstacle to the application, which is divided into 3 textviews and each of…
Jezdi
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Android Studio: error,isSocketAllowedBySecurityPolicy start : device null

I'm working on a assigment for school and need to send a bluetooth signal to an HC-05 device. This is what I've so far but it keeps giving the same error message. D/BluetoothUtils: isSocketAllowedBySecurityPolicy start : device…
Ruiter80
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send string to atmega32 through bluetooth hc-05 module

If I want to send a string like " Hello World" from a mobile phone to a Bluetooth HC-05 module, then how to handle this string and make my logic accordingly ...? Is there any function to convert string to char? I am using an ATmega32 microcontroller…
Mihiranga Silva
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How do you enable write access with Web Bluetooth API (HC-06 module)?

I am working on a simple web application that sends commands to an HC-06 Bluetooth module using Web Bluetooth API. So far, I have successfully connected the device to the browser and gained access to the server, service, and characteristics. The…
Michael Kerr
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HC-05 to control car has delays and disconnection

I made some simple code and car using 1 arduino, 1 hc-05, 2 L298N, and 4 batteries. I control them with the app Bluetooth RC controller on android. When I send a command on the app, the car sometimes has some delays, varying 4-8 seconds, sometimes…
Trần Hoàng Quân
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Text send via Bluetooth is broken up by first character on the receiving end?

I programmed a Bluetooth messaging app, the app works correctly when it connects and pairs with another phone, but when with HC-05 it connects, I get the received message as a syllable (first letter and then the rest of the letters) so what is the…
Mustafa Jawad
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bluetooth Hc-05 connection with flutter and arduino uno

How can send data from MPU6050 sensor and Arduino uno to my Flutter app (android app) using Bluetooth HC-05?
فرح أبو لبده
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How do I pair an ESP32 and a HC-05 module?

I have tried a lot of times, but any solution doesn't work. I'm using an ESP32 as a Control and HC-05 as an anthena for an Arduino UNO. I make that the HC-05 could read every String it recieves, but I'm not able to link the ESP32 (DevKit v1) with…
NiMeVeas
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why my arduino doesnt recognize the characters?

I have a problem with my Bluetooth module on my Arduino, I am trying to do a door that opens with a button in an application in the phone but when I press the button in the app the door doesn't move. #include #include…
Julian Gerstner
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HC-05 not receiving any data from connection

I've been working on a project and it needs to have bluetooth. I have chosen the HC-05 and I've conected it to the arduino to the digital ports 2 and 3 and used SoftwareSerial to handle it. The thing is, Bluetooth.available() is always false, even…
Lysander12 PT
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HC-05 with Arduino Uno send data from phone to hc-05

I am trying to use a hc-05 module for the first time and I have some problems: I already had a hard time finding the right pins for the rx and tx pin that g finally put on rx -> pin0 (rx) and tx -> pin 10. I can send data from the hc-05 to the phone…
wabhou
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Arduino transmission by Bluetooth HC-05

I'm working on transmitting data from Arduino to Mac for sensor logging by HC-05 Bluetooth module. I've succeeded in transmitting data, but received data is bit weird and unstable. This is a log of received data on a serial monitor. This is an…
Kiyu
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