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Questions tagged [bluetooth]

Bluetooth enables short-range wireless communication between devices.

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0answers
74 views

Arduino loses communication with bluetooth when sending commands to nodemcu esp8266

i've been working on a project using an Arduino UNO, Bluetooth Module HC-06 and NodeMCU esp8266, the project consists on turning leds on via bluetooth and telling the esp8266 that the leds were turned ...
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2answers
2k views

HC-05 bluetooth module not accepting AT commands

I have been attempting to program my HC-05 ZS-040 Bluetooth module for quite some time, and I cannot get the AT commands to return any values. I have searched google for quite some time, and I none of ...
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2answers
787 views

Why can't my bluetooth receive serial data from my android phone, but can send serial data from my bluetooth to my android phone?

I can receive serial data from my phone but I can't send serial data to the arduino using bluetooth. I can see my input from serial monitor to my Android but not the other way. I'm using ARF7044A ...
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1answer
412 views

HM-10 Central mode starting a connection

I'm trying to issue a connection via HM-10 from arduino (rather than my phone). However, I'm unable to start a connection from arduino using both AT+CON and AT+CONNL. When I try AT+CON I get OK+CONNA ...
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3answers
69 views

How to use BlueTooth on mobile device to find AccessPt and enter PW for ESP8266 WiFi on an Arduino controller? [closed]

How can I use BlueTooth on a mobile device to connect to my HC-05 equipped instrument to find the local WiFi AccessPt and enter the PW for my Arduino controlled instrument with ESP8266 WiFi? I want ...
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1answer
29 views

why of 2 identical micro-controllers, only one can connect to a given device?

I am working with 2 identical (Arduino) Adafruit Feather M0 Bluefruit LEs. Only one of them can connect to a Universal Windows Platform app running on a Windows 10 machine. The other connection fails ...
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3answers
69 views

Bluetooth Modules not communicating correctly

I plug in BT rx to digital 11, BT tx to digital 10 and then 5v and ground from the HC-05 to the arduino. I then upload this code to the HC-05 that is set as a master. #include <SoftwareSerial.h>...
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2answers
45 views

String to equation problem

My project is to create a decimal adder via voice recognition. Its like a calculator that only does addition. I am using hc-06 bluetooth module to convert my voice to a string. Let's say for example, ...
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0answers
46 views

Input from two microphones to bluetooth

I am a complete noob at arduino, so I apologize if this is a stupid question. I would like to take input from two microphones and send the output to a bluetooth headset using an Arduino processor? Is ...
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1answer
3k views

Scan Bluetooth devices using HC-05 [closed]

Basically, I want to connect the HC-05 to a specific mobile Bluetooth(whose address is known) and when the connection is established I want to turn on a LED on the breadboard. I am totally clueless ...
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1answer
79 views

Connecting two sensors with bluetooth

I am new with Arduino. Im working in a school project, and I decided to create a glove with shock sensor for goalkeepers and need a ultrasonic sensor next to the ball, so i can know when the ball was ...
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0answers
756 views

Send readings to PC using HC-05

My project, briefly explained is a weather station that will send data periodically from an Arduino UNO (later an attiny85) to my PC for processing. I'm using a HC-05 bluetooth module to establish a ...
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1answer
1k views

ZS-040 (HC-05) blueetooth module Arduino Mega

I followed this tutorial http://www.martyncurrey.com/using-an-arduino-mega-with-a-hc-05-zs-040-at-mode/ and it seems that the AT mode is on. (the LED is blinking like it's supposed) I connected my ...
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0answers
96 views

data streaming using Bluetooth + RFduino

I am trying to send ECG data using RFduino. I am using two RFduino modules. The transmitter module is using the device code while the receiver is using the host code. I have common baud rate between ...
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1answer
1k views

Bluetooth a pushbutton from one arduino to another to turn on a LED

For a major project at school i need to get a bluetooth module to be able to communicate between two HC-05 modules as a master and slave. They need to be able to press a pushbutton on the slave and ...
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1answer
661 views

Small Arduino with Bluetooth HID interface

I am trying to create a bluetooth gamepad for my phone. I saw this: https://www.amazon.com/DFRobot-Beetle-BLE-Arduino-Bluetooth/dp/B014KQHEH6/ref=cm_cr_arp_d_product_top?ie=UTF8 It says its ...
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1answer
68 views

Communication between 2 Bluetooth modules

I successfully connected two Bluetooth modules, HC-05 and HC-06 like on this website: http://www.martyncurrey.com/connecting-2-arduinos-by-bluetooth-using-a-hc-05-and-a-hc-06-pair-bind-and-link/ I ...
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2answers
414 views

Action while button is pressed

My issue is that I can't rotate the motors continuously. If I press any button, motor.step will be executed and then it stops, even though I didn't release the button. This is my project so far. Code: ...
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2answers
149 views

One of the LEDs on my Arduino is very dim

I made a vibration sensor using an Arduino. It is connected to an Android app. When the start button is pressed on the app, a red light LED turns on (stand by), and after 2 - 5 seconds, the red LED ...
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0answers
26 views

How do I improve Bluetooth communication?

How do I improve Bluetooth communication? You will see, in this image using the Bluetooth monitor application, in order to receive the "ON" response, I had to repeatedly send the "O" character: The ...
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1answer
358 views

Bluetooth module HC-05 not finding mobile phones, only PC

I put the HC-05 in the AT mode with arduino and the comands: AT+CMODE=1 AT+ROLE=1 AT+INQM=0,10,48 AT+CLASS=0 AT+INIT AT+INC It responds "OK" after all till AT+INC, and after this, shows only my ...
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2answers
3k views

how to send data to Adafruit Bluefruit Feather (32u4) over bluetooth?

Sup yo. I have my Adafruit Bluefruit Feather all wired up. It's lovely. I've got it responding to commands over the USB serial, activating an array of octocouplers. It's terrific. Here's the ...
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1answer
56 views

I use Bluetooth to control LED,but LED can not turn off

I use android to send the data to Arduino. when i send 0x02, LED turn on, and the breathing LED code are work. But when i send 0x03, it can not turn off the LED. i use UNO R3 the bluetooth is HC06 ...
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3answers
528 views

Unable to get response for BLE AT commands in Arduino Uno

I am trying to establish connection between two BLE (BT43) through AT commands from an Arduino Uno. I am not getting any response from the AT commands. The connections are as follows: Arduino Tx --> ...
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1answer
47 views

Control/Interacting with Android OS using Arduino board

I am new to arduino, and based on my search, it is possible to connect Android devices and Arduino board thru bluetooth module. But most solutions i found are either for controlling Arduino board ...
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4answers
8k views

How to solve problem AT+INQ ERROR (1F), AT+INIT ERROR(17) on Bluetooth Module HC-05?

i have problem with accessing at-command in module Bluetooh HC-05. i just follow all tutorial to activate at-command like this, http://www.martyncurrey.com/arduino-with-hc-05-bluetooth-module-in-...
0
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1answer
903 views

Is there a way to send data from Tensorflow to Arduino via Bluetooth?

I am not sure if such a question is accepted here. If not please direct me to a more suitable Exchange. I am planning a small project involving Machine Learning using TensorFlow and Python, which ...
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1answer
99 views

Problems bluetoothing float values

I have two Arduino Unos, one of which is connected to a HC-05 bluetooth device and a temperature reader, the other has just a HC-05 bluetooth and is expected to output temperature readings in serial ...
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0answers
1k views

Send Bluetooth Data to Android App (HC 05)

I'm struggling to send data strictly from my arduino UNO to an android app using bluetooth module HC 05. I am able to send/receive using 1) the serial monitor in arduino IDE and 2) Bluetooth Chat ...
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1answer
131 views

Circuit works on breadboard but has power problems on protoboard

I'm building a simple circuit that takes data from an IMU (using MPU6050), sends it to a microprocessor (Arduino Pro Mini 5V) to apply data smoothing and averaging, and then this data is sent using an ...
1
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1answer
323 views

When the TX and RX pins for Bluetooth are connected the LCD screen will not update. Why is that?

I have connected a Bluetooth shield and LCD screen to an Arduino Uno. I have two active low push buttons to increase or decrease the variable desiredTemp. This value is meant to be displayed on the ...
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1answer
923 views

Arduino MQTT Bluetooth

Is there a library to use MQTT with a bluetooth module (HC-06) instead of WiFi? If not is there a similar ready for use implementation of a publisher subscriber pattern available?
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0answers
73 views

How can I access and control a Bluetooth on an Arduino?

I have a MakeBlock Mbot, which is reprogrammed with Arduino Uno code, treating it as an Aarduino Uno. I have a more complete list of pins out, but the TX, RX pins are effectively D0 RXD, D1 TXD. I ...
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1answer
1k views

RX/TX not working as intended

I am currently working on a project with a HC-06 module. I hooked it up accordingly like so: Arduino -> HC-06 5V -> VCC GND -> GND TX -> RX RX -> TX and I ran this code: void setup() ...
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1answer
262 views

Use Wii Remote and Arduino to emulate a keyboard for Windows 10?

Is it possible to use an Arduino to communicate with a Wii Remote, connect the Arduino to a Windows 10 computer, and have the Wii Remote inputs be translated into keyboard keys for Windows 10? I've ...
0
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3answers
112 views

How I can divide information stream from bluetooth hc-06?

All good afternoon or evening. I am having a problem writing a sketch for Arduino using Arduino UNO and Bluetooth HC - 06. My program does not divide the input stream of information into several ...
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0answers
175 views

Arduino Motor Shield not working properly

I am currently making a project which includes a car controlled by the Arduino Motor Shield. I have written a code to control the motor shield via Bluetooth. However, the code doesn't seem to work. I ...
2
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1answer
1k views

Parse Bluetooth string

I'm developing on android with bluetooth LTE, I can send hex codes, but I send one code at time, so I need to send many informations in this way, how can I recognize a string and save the datas inside ...
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3answers
662 views

How to use the HC-05 properly?

It all started when I was working on my Arduino project, which involves an Arduino Nano, an HC05 module and a bunch of sensors (DHT 11, soil moisture and LDR) with Blynk App. Everything worked as it ...
1
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1answer
463 views

HC-05 bridge using Arduino Nano and GNU Screen

I connect an HC-05 module to an Arduino nano with CH341 serial chip (voltage divider on RX pin). I am trying to make a bridge for a test, i.e. serial in, echo local and echo to Bluetooth and vice ...
0
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1answer
624 views

Bluesmirf Mate Silver (RN-42) enter command mode when in HID mode

I am having problems getting the Bluesmirf Mate Silver (RN-42) into command mode once I have switched to HID mode. I have bought a second new Bluesmirf Mate Silver to confirm my issue. I soldered the ...
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0answers
266 views

Arduino hardwareSerial Bluetooth.println not sending string over 310 chars

Hey all I am wondering if my code below can be modified in order for the Arduino to send more than 300 chars to a HM-10 bluetooth 4.0 le module? #include <SoftwareSerial.h> #define ...
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2answers
125 views

How to make a smooth serial print?

I have a code which make some calculations using sensor values and provide two comma separated values. float x;// initialization float y;// initialization //some calculations here using sensor values ...
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1answer
3k views

HM-10 send and receive data and checking received value

I am wondering what is wrong with my code below. I have 2 issues. The first issue, I am checking if c equals "hi" and if it does then display said hi. I currently see the output of c when it hits ...
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0answers
94 views

Arduino Code hang

I am working on a project to dim/brighten the LED lights between each hour. To make the program readable i have only kept the code for few hours. For example if T1 is at 255 PWM and T2 is 20 PWM, the ...
0
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1answer
2k views

Problem : Trigger limit switch to stop DC motor

I want to make a project about automatic gate and garage door via Android app and connected by HC-05 bluetooth module. Each of the gate and garage door have two limit switches(located at each end of ...
0
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0answers
171 views

Remove hanging PS3 input via bluetooth to arduino

I am working on a remote controlled vehicle based project. I am using a PS3 bluetooth controller for this purpose & am facing the problem described below. Any help would be appreciated. Basically,...
0
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1answer
3k views

AT Commands HM10 BLE Module - Not working

I got the ble module to work fine following online guide. However when i changed the baud rate: AT+BAUD1 which changed to 19200 however ever since i was not able to get at commands to work. tried: ...
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2answers
124 views

Connecting my Arduino with Bluetooth [closed]

What I want to do is to create a temperature measurement bracelet that you wear on your wrist. So it takes data from the sensors and sends them to the PC. What I am using to do that: an Arduino Uno a ...
0
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0answers
471 views

HC-05 receives only first few bytes

I have an android device and stm32f103 + HC-05 bt dongle. I'm sending 10 bytes "0123456789" string from android to stm32, but I'm receiving only random 1-5 bytes. code on stm32 side: long received = ...