Questions tagged [bluetooth]

Bluetooth enables short-range wireless communication between devices.

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18 views

Trouble using bluetooth module with the ESP32s2 feather board

I am trying to use an ESP32-S2 feather board with a separate bluetooth module, the Adafruit BLuefruit LE UART Friend. I previously used this bluetooth module with the Feather M0 Adalogger through UART ...
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1answer
86 views

ESP32 Arduino Bluetooth Serial does not reconnect after disconnecting

The basic ESP32 Arduino Bluetooth Serial example pairs and connects as expected, BUT once I disconnect the Bluetooth terminal it stops responding to new events at all, once I reset the esp32, it ...
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28 views

How can I capture raw Bluetooth data on a ESP32?

I want to send data from a BBC micro:bit to an ESP32 using microbit's radio because the Bluetooth stack is not available on the microbit. Here is a workaround that shows that there is a communication ...
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1answer
92 views

HC-05 Module not receiving commands and not pairing

I'm working on a project where I'll need to establish a connection between two HC-05 modules, each connected to an Arduino, but for now I'm just trying to get one to work and connect to my phone, but ...
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47 views

Bluetooth HID for mouse project

I’m working on a project, to create an air mouse for people with repetitive strain injury (since I have it as well). I’m flexible with the hardware required. The plan is to use data from an IMU for ...
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20 views

how to control switch (proteus) using bluetooth card (HC-05) and arduino?

This is the first time I use the Internet with the Arduino in the proteus , What are the stages that I must follow in order to be able to control the switch via Bluetooth? If it was possible to ...
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1answer
35 views

What is the highest baud rate that can work between Android device and an Arduino connected to an HC05?

I see a lot of baud rates in the AT Command documentation for the HC05 however I am not sure what is the fastest that can work between the Arduino controlled embedded system and the Android phone. I ...
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28 views

Can't test for equality with string received from bluetooth module

I am trying to keep the program within a loop until the user inputs "ok" on the Bluefruit Connect App. I use the readString() function on the bluetooth object (ble) to read from it. Before ...
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28 views

Can ESP32 used for mobile game controller?

I have a term project: I need to develop a mobile game(Guitar Hero Like rhythm game) probably on Unity and I need to develop a custom controller for this game that works on android device. There will ...
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15 views

Can I Control My Android Game with Arduino Gamepad

I have a project that I need to make a game(guitar hero like rhythm game) on unity for android and develop a custom controller for it that works on mobile game. I decide to use Arduino and hc05 module ...
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26 views

Not Receiving HC-05 data

I've been trying to use this HC-05 bluetooth module for a project, where the data would be sent to a Max/MSP/jitter program. Initially, every time I connected my bluetooth device to my computer, it ...
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change variable configuration using bluetooth device in esp32? [closed]

i am working on a small project in which i have to change the configuration using bluetooth device . to illustrates this if i have LED and led in high when we press "a" and low when we press ...
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38 views

Send sensor data through GATT with Adafruit Bluefruit

I have the BLE Module Adafruit ItsyBitsy nRF52840 Express and I want to send sensor values from a Hallsensor to my computer. I was able to have the right data checking with the Serial monitor. int ...
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1answer
29 views

How do I set up communication between the “Seeeduino Xiao” and the “Adafruit Bluefruit LE UART Friend - Bluetooth Low Energy (BLE)”?

I've seen normal Arduino boards connecting to it no problem (Uno, Nano, etc.). I'm trying to connect it to my Seeeduino Xiao. It has UART compatible pins, so I'm fairly certain wiring isn't an issue. ...
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32 views

RN42 Bluetooth HID KEYBOARD sketch by silverball

How can I use RN42 sketch by silverball /* RN42_HIDRaw_Arduino.cpp - Roving Netowrks RN42 Bluetooth HID raw library Developed by Chris Leitner - 2012 This library is free software; you can ...
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How do I set up bluetooth to wirelessly control servo's connected to an arduino from my PC?

I have been working on a project that includes two servos, one is on X axis the other is Y, the Arduino takes my cursor's X,Y coordinates over a Visual C# program and translates them through the ...
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29 views

Cannot detect Bluetooth device when connected to female receiver with PS4 Joystick

I am trying to connect the Bluetooth transmitter to a female receiver via an Arduino Uno. The button blinks, but the Bluetooth is not visible in any device. i want to connect PS4 controller using HC05 ...
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41 views

BT shield to receive/intercept BT mouse data

I've owned this HC-05 shield for a long time, but actually never used it, until the need arose. There is a rather delailed wiki on how to use it, either as BT Master or Slave. I also have a BT mouse. ...
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19 views

Various Bluetooth HC-06 modules erratic in different ways

I am trying to make a Bluetooth controlled robot and have troubles with the Bluetooth modules. I used 3 HC-06 Bluetooth module. All of them have different problems. I could not find the 1st HC-06 ...
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1answer
60 views

Laser tripwire and LDR

I am planning to make a laser tripwire but I have an issue. Let me explain what I am trying to do: Making a laser tripwire is actually pretty easy at its core. You just need an LDR and a laser diode. ...
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1answer
49 views

SoftwareSerial read until available is empty only works with delay

I originally was only going to make my program work on an ESP until I needed it on an Arduino UNO (because I suspect my ESP is broken). I had to add SoftwareSerial support but because I didn't ...
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64 views

Universal remote control with bluetooth emitter

I am creating a universal remote control to replace multiple devices I have at home. The IR part was quite easy to implement. I realised then that the Chromecast with Google TV remote uses Bluetooth, ...
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35 views

Bluetooth Controller

Im doing a project in which there are two arduinos with both of them having hc05 bluetooth modules. Now how to connect them both so that both stay connected and one is used as a remote control so that ...
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1answer
135 views

Arduino nano IoT antenna broke

I have an Arduino Nano 33 IoT and have used it for a good time now. I was using it when the antenna snapped off. Is there any way to fix it by either an external antenna or some other method? I tried ...
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1answer
49 views

Servomotor and Bluetooth module block each other

For a small project, I aim to connect a digital temperature sensor (KY-028), a Bluetooth module (HC-05) and a servomotor (SG90). The problem is it seems I can't connect the Bluetooth module and the ...
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143 views

Can I extend esp32 bluetooth range with wifi antenna

My Arduino ESP32 D1 R32 only has a Bluetooth range of about 2-3m and the signal can't pass through any obstacles. Will fitting a wifi antenna to it like this extend my Bluetooth range and create a ...
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1answer
53 views

Arduino Leonardo - Setting up bluetooth - AT command from terminal does not return anything

I am trying to setup bluetooth with a board that contains Arduino Leonardo chip. My full setup is: The main board: https://www.dfrobot.com/product-1148.html The base shield: https://coolcomponents.co....
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28 views

Looking for offline or online Arduino stimulator or software contains Bluetooth or WiFi as input

I went through online stimulator Tinkercad. I am looking for a stimulator which contain Bluetooth or WiFi as input. If anyone has any idea please help
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24 views

Bluetooth and Short Audio Source

I am looking to use an Arduino to monitor an incoming audio source (mobile radio/HAM/Walkie Talkie) for a transmission and send this stream through the car audio system speakers. Speaking back on the ...
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28 views

How can I rewrite my Bluetooth Classic Arduino code into Bluetooth Low Energy Arduino code (and have everything working the same)

My original code for BT Classic My Work in Progress BLE Code I am trying to take all I did in BT Classic and have it working exacly the same in BLE but the Rssi keeps returning 0's in the BLE code and ...
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1answer
54 views

Arduino with HC-05 Bluetooth Module | No data will be transmitted

I've got an Arduino Uno (Elegoo R3) and a Hc-05 bluetooth module. First of all i want to send data with an android app (Bluetooth terminal) to the Arduino and turn pin 13 (LED) on. My Arduino code: #...
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48 views

How to use HM-10 as client, and send messages to specific services/characteristics?

I have been messing around with this module, unfortunately i bought a fake one, but got the original firmware running inside it (V550). So far i can set the HM-10 up as client/master and by using an ...
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25 views

Schematic for HC05

I want to make a camera shutter device which can be connected to bluetooth of smartphone and when I press a button on device, it will click a picture. like this https://www.amazon.in/Vomoco-Bluetooth-...
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145 views

Raspberry Pi 3B+ BLE communication to Arduino Nano 33 IOT

I have an Arduino Nano 33 IOT and it uses BLE. I want it to talk to my Pi 3B+ and send all of its sensor data. I cannot figure out a way to do it using Python for the Pi and ArduinoBLE library for my ...
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24 views

Make Arduino Nano 33 IOT talk to another Arduino via Bluetooth

I have an Arduino Nano 33 IOT and I want it to talk to another Arduino that has an HC-05 Bluetooth module. Is this possible? I cannot find anything on the internet that talks about doing this.
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1answer
111 views

Crash when disabling bluedroid

i have an ESP32 and i want to use deepsleep when it's not used. Before sending it to sleep i clean up everything, so disconnect, deinitialize and disable everything i build before. But i get a crash ...
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2answers
38 views

Hc-05 bluetooth module pairing issue

Module light is blinking/working but it's not showing for pairing in my smart phone.I have supplied it 3.3 volts and have tried different phones.
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1answer
86 views

Bluetooth module(HC 05) issues

I am trying to make a Bluetooth controlled 4WD robot. i was following a tutorial i found online (https://howtomechatronics.com/tutorials/arduino/arduino-robot-car-wireless-control-using-hc-05-...
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22 views

Bluetooth connection problem

I am using Arduino Uno and Blue tooth HC-06, I am trying to use this in order to switch a LED through mt phone but I cannot create communication between the Bluetooth and the Arduino, I am using ...
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1answer
83 views

having problems with my arduino bluetooth car project(with L298n Motor Driver)

so the scenerio is i am making a bluetooth controlled car(voice control)+obstacle avoidence function.I am using arduino uno with L298n motor driver and a HC-05 BT module in the sensors i am using the ...
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1answer
83 views

can i use bluetooth from a speaker as a bluetooth module?

i have a Bluetooth speakers that i don't want,and i was wondering if i can use its Bluetooth as a Bluetooth module to use it with Arduino. if so how what pins should i use. here is a pin diagram for ...
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84 views

Bluetooth no COM port connection? ESP32

I am experiencing issues sending serial data via bluetooth with my ESP32. When the device is plugged in, I am able to call bluetooth, and connect to PC and even obtain the serial data via the ...
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1answer
38 views

Wrong data receiving in my Arduino by bluetooth

I have programmed a client-server between an Arduino and my mobile app in Android. I´m using a buetooth HC-06. For the moment is a very basic code just to turn ON/OFF a led, regulate its voltage, and ...
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1answer
88 views

PT2257 only gives me heavy buzzing sound

I have this project where I control a bluetooth audio module with an arduino. In this case, I have used an arduino nano. But then, I have been meaning to add volume control to the project so I use a ...
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0answers
64 views

CC2541 Bluetooth AT Commands not work for any Commands sended from Serial

i bought the HM 10 Bluetooth controller (CC2541), i got connect on this device through Serial Bluetooth Terminal (Android App) with Serial BLE menu this method not requires any pass and "...
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2answers
104 views

Convert character to Integer while leaving encoded

I have two characters, that I get by Bluetooth. char a = SerialBT.read(); char b = SerialBT.read(); According to the Arduino Reference, decoded data stored in a char gets encoded to ASCII text. I ...
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1answer
86 views

Failed HC-05 Bluetooth sketch upload - (port and board correct)

I'm running this project with HC-05 https://create.arduino.cc/projecthub/millerman4487/view-serial-monitor-over-bluetooth-fbb0e5 and I am getting connection error. I have ensured my port selected and ...
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25 views

Ardunio wireless voice transmission

I made a project based on calling with gsm module and arduino and now i want to transmit to voice wirelessly to my bluetooth earphone which module should i use for this purpose.
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15 views

Get client information on BLE

So I'm working on a personal project using bluetooth abilities to start a BLE server and want to automatically retrieve a client's information after it's connected: ID so I can keep track of clients, ...
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1answer
199 views

ESP32 nodemcu serialbt sending data

I'm currently trying to send data from esp32 to my android app that I made. The sensor readings are showing in the serial monitor, however, what's showing on my app are either @ or &. Please help ...

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