Questions tagged [bluetooth]

Bluetooth enables short-range wireless communication between devices.

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33 views

Bluetooth Upload is Hanging

I am trying to program my Arduino via bluetooth and have been following this tutorial very closely in order to do so: https://www.instructables.com/Program-an-Arduino-Wireless-Over-Bluetooth/ I have ...
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30 views

IoT Parking Apps with Car Plate Recognition for Smart City using Node Red [closed]

recently I found a project that involves using Raspberry Pi and Arduino Mega Board to create a Car Plate Recognition system but I am stuck with connecting the pins as I am not a professional in using ...
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32 views

Arduino library or code for ESP32 to scan for Bluetooth devices?

Is there some code or library that would allow me to scan for nearby Bluetooth devices using a common ESP32 board ? I only found similar code for actual Arduino boards.
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25 views

HC 05 auto disconnecting

I am trying to make a bluetooth controlled car using arduino. I am powering the arduino UNO using 12V 2A adapter. I am powering the L298N motor driver and the HC 05's VCC using the arduino's 5V pin. ...
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28 views

ESP32 Classic Bluetooth Set Password

I am using ESP32 classic Bluetooth Feature for data transfer. I am using the SerialToSerialBT example. I am able to scan and discover the Bluetooth device from my smartphone. But the pairing is ...
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44 views

Need help with Bluetooth component for TinyCircuit

I am looking to get some assistance to learn how to program the Bluetooth module for TinyCircuits. I am currently using the UARTPassThrough.ino example to try and learn BlueNRG's functions. I see that ...
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32 views

ESP32 BLE service not visible to Node-RED

I've been trying to host a BLE-server on my ESP32 with a custom service. I'm trying to read the service data in NodeRED, but the service IDs and custom characteristics don't show up in NodeRED ...
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1answer
73 views

avrdude: stk500v2_ReceiveMessage(): timeout error for bluetooth arduino

I am trying to link the Bluetooth module to my arduino UNO in order to wirelessly program a robot. The only issue that I am having is that the bluetooth module does not seem to pick up the arduino. ...
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20 views

configuring characteristics to communicate data on the Arduino bluetooth low enegy module

I have the HM-10 Arduino BLE module. I am also building an app to send and read characteristics on the BLE module. On the Arduino BLE side of things though, how do I set up which characteristic ...
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21 views

ESP32 SerialBluetooth disconnects within a second after connecting but not BLEDevice/BLEServer

Code using BluetoothSerial api disconnects immediately after establishing connection with my laptop running Ubuntu 18.04. If instead of BluetoothSerial BLEDevice api is used, the connection stays ...
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2answers
72 views

Problem with first two samples of serial data received by RPi

I'm trying to receive a string from an Arduino to a Raspberry Pi via a Bluetooth socket connection (RFCOMM). I'm using an HC-06 Bluetooth module, an Arduino UNO R3, and an RPi 4 Model B. For the ...
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1answer
50 views

Incorrect values arriving from Arduino to RPi over serial communication

I am trying to write four values relating to energy (current, power, energy, and peak demand) via a SoftwareSerial connection from my Arduino UNO to my Raspberry Pi 4. However, two things are ...
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2answers
87 views

arduino acclerometer with servo motor

I'm currently working on project to operate three motors while sending accelerometer value to computer via bluetooth module. I want the motor operation and value transmission to work seperatly. But ...
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46 views

Program a mega2560 from a different Serial port

I want to be able to use my HC-05, currently on Serial3 to download code to on my 2560 from a connected android tablet. I'm currently running MegaCore, which has optiboot on it. I've looked for ...
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1answer
47 views

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 ...
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41 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 ...
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25 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 ...
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67 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 ...
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104 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 ...
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1answer
60 views

BLE library for Beetle Bluno BLE with AVR architecture (Atmega328)

When I try #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) and ...
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0answers
49 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 ...
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133 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 ...
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0answers
83 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 ...
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0answers
37 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 ...
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119 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 <...
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3answers
56 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 ...
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1answer
64 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 ...
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0answers
25 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 ...
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0answers
56 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 ...
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0answers
33 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 ...
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0answers
33 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
451 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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72 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
668 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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0answers
180 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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0answers
26 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
311 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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0answers
36 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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0answers
42 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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0answers
70 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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0answers
111 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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129 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
183 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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1answer
88 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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0answers
19 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 ...
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0answers
35 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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0answers
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
69 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
239 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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0answers
77 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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