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Questions tagged [bluetooth]

Bluetooth enables short-range wireless communication between devices.

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1 answer
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Can’t send string from arduino to processing via hc05

I’m trying to send and receive data from my laptop to arduino nano via hc05 Bluetooth for a rocket flight computer. For some reasons which I don’t know, I can send data from processing software using ...
Brandy's user avatar
  • 33
2 votes
0 answers
263 views

HC-05 bluetooth module stops working when blinking

I'm using this HC-05 Bluetooth module to communicate between my Arduino mega 2560 and my laptop. I am using processing to send the data from my computer to the Arduino. The module connects nicely and ...
Sahibjot Singh's user avatar
1 vote
0 answers
56 views

My bluetooth module keeps sending out constant exports

So I have a bluetooth module hooked up to my arduino to control an LED light, something simple to turn on and off. But the app im using constantly is either sending something or receiving. This causes ...
Memathwiz's user avatar
1 vote
0 answers
1k views

Set Value for a characteristic fails using BLE ESP32

I'm working on a project that uses a Raspberry pi to trigger a microcontroller to read data from an accelerometer for some amount time then have that data available for the RPi to read it over BLE. I ...
A.Choules's user avatar
1 vote
0 answers
849 views

Bluetooth module with lowest latency to communicate with PC

I am making a haptic feedback glove using Arduino and HC-05 bluetooth module to communicate with PC. There are rotary encoders on the finger which send value to PC through Arduino mega. The PC returns ...
cakh's user avatar
  • 11
1 vote
1 answer
438 views

BLE library for Beetle Bluno BLE with AVR architecture (ATmega328)

When I try to #include <ArduinoBLE.h> in my Arduino program, I get the error: WARNING: library ArduinoBLE claims to run on samd, megaavr, mbed, apollo3, mbed_nano, mbed_portenta architecture(s) ...
human's user avatar
  • 129
2 votes
0 answers
261 views

Arduino Nano 33 BLE Sense TFlite inference hangs when using bluetooth

I'm running into an issue where when I try to set up a BLE service my tflite inference seems to hang/crash. I used https://experiments.withgoogle.com/tiny-motion-trainer to train a model to recognize ...
Lauren's user avatar
  • 21
2 votes
0 answers
868 views

Send/Stream BLE (Bluetooth Low Energy) data with high data rate with Arduino

My project is to transfer an image wirelessly via BLE from my Sparkfun EDGE board using the Arduino IDE to another laptop. In the following, for simplicity, I have reduced the program to transmit ...
Bene Gesserit's user avatar
1 vote
0 answers
791 views

ESP32 sending data of type uint16_t(or anything except for uint8_t and char*) over bluetooth(classic) serial

I'm making a custom gamepad with an ESP32 and the joystick output is read by an ADC using uint16_t analogRead(uint8_t pin);. Now that I want to send the data and receive and parse it, I ran into a ...
Rajat Mondal's user avatar
1 vote
0 answers
117 views

Problem sending data via Bluetooth

I have an HM-11 BT module that I am configuring as a Master/Central and attempting to connecting to a SH-M08 BT slave module. I can connect to the slave successfully but I cant send data. I found this ...
Blake's user avatar
  • 11
1 vote
0 answers
846 views

Using BLE via NRF24L01 to communicate with Android phone

I have been going through a tutorial about this, based on the example code for the "BTLE" Arduino Library. This is my program: #include <SPI.h> #include <RF24.h> #include <...
Thomas Hirsch's user avatar
2 votes
3 answers
106 views

Issue with bluetooth and a large number LED strip

I want to be able to control multiple LED strip via bluetooth with one arduino. I coded my own android app and everything work fine with one or two led strip with few pixel. But as soon as I had to ...
Antoine Bacquet's user avatar
1 vote
1 answer
77 views

I need help with my final year project

I am building a project using bluetooth control as well as an ir sensor. The logic behind my program is when I press a key I want my robot to execute a series of program and while the program is ...
Krutarth's user avatar
1 vote
0 answers
54 views

Make a Jack-Bluetooth Module for the car

I'm making a Jack-Bluetooth module so that I can send music to the car (or other devices w/ Jack plug) without an internal Bluetooth module in the car. https://habr.com/en/post/456182/ says that I ...
Student's user avatar
  • 11
1 vote
0 answers
348 views

Problem with ESP32 bluetooth

I am trying to connect ESP32 via bluetooth classic to my PC to transfer some data from a sensor. As a first step, I am simply trying to send some random data over bluetooth serial. The code is at ...
Erik's user avatar
  • 11
1 vote
1 answer
162 views

Brushless Motor "twitches" on its own when connected to battery

I've been trying to make a Bluetooth slider app that can control the spin speed of a brushless motor. The transmitter I am using is Arduino Mega. The problem I'm having is that my motor will start ...
Brian J Yang's user avatar
1 vote
0 answers
140 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 ...
Cem Adatepe's user avatar
1 vote
1 answer
1k 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 ...
Elazar M's user avatar
1 vote
1 answer
3k 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 ...
The Riser's user avatar
  • 123
1 vote
0 answers
683 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 ...
Zhelyazko Grudov's user avatar
1 vote
0 answers
132 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 ...
shiro343223's user avatar
0 votes
1 answer
2k 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 ...
Alick Campbell's user avatar
1 vote
0 answers
60 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 ...
Cem Adatepe's user avatar
1 vote
0 answers
65 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 ...
Levent Kaya's user avatar
1 vote
0 answers
209 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 ...
Levent Kaya's user avatar
1 vote
0 answers
332 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 ...
Julia's user avatar
  • 11
2 votes
0 answers
587 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 ...
Hanuman's user avatar
  • 21
1 vote
1 answer
484 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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1 vote
1 answer
388 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 ...
Jonathan Agravante's user avatar
1 vote
0 answers
50 views

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 ...
4ourHearts's user avatar
1 vote
0 answers
60 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 ...
Karan's user avatar
  • 11
1 vote
0 answers
24 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 ...
Joshua's user avatar
  • 19
2 votes
1 answer
130 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. ...
Yağız Alp Ersoy's user avatar
1 vote
1 answer
1k 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 ...
DreamingInsanity's user avatar
2 votes
0 answers
457 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, ...
Eduardo Rodrigues's user avatar
0 votes
2 answers
1k 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 ...
DragonflyRobotics's user avatar
0 votes
1 answer
387 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 ...
Gabriel Stancu's user avatar
2 votes
1 answer
296 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....
Mr. Panda's user avatar
  • 151
1 vote
0 answers
44 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 ...
WMIF's user avatar
  • 119
2 votes
0 answers
97 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 ...
Melody April's user avatar
1 vote
1 answer
679 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: #...
Verilyzed's user avatar
1 vote
1 answer
398 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 ...
Souza's user avatar
  • 111
1 vote
1 answer
861 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 ...
DragonflyRobotics's user avatar
2 votes
1 answer
376 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 ...
Stack's user avatar
  • 55
-1 votes
2 answers
343 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.
Hassan Akram's user avatar
2 votes
2 answers
716 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-...
Ayanfe Adekanye's user avatar
1 vote
0 answers
40 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 ...
amirf's user avatar
  • 11
1 vote
1 answer
369 views

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

so the scenario is i am making a bluetooth controlled car(voice control)+obstacle avoidance function.I am using Arduino UNO with L298n motor driver and a HC-05 BT module in the sensors i am using the ...
Hassan Akram's user avatar
1 vote
1 answer
364 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 ...
Zohary's user avatar
  • 23
1 vote
0 answers
399 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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