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Questions tagged [bluetooth]

Bluetooth enables short-range wireless communication between devices.

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1answer
670 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
54 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
526 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
423 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
48 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
139 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
145 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
23 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
98 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
1k 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
39 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
252 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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0answers
74 views

Flash compiled Hex code to Bluno from Swift

I'm using a Bluno from DFRobot and trying to create an IOS app in Swift that will flash compiled Arduino code to it. I can establish a BLE connection using the core bluetooth library, and I found the ...
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0answers
37 views

Is there such thing as advertise your custom UUID? Advertise on logic HIGH only

I want this sketch to poll the button logic all the time, if logic HIGH then advertise the custom UUID for 0.5 second then off the radio and go back to polling the button logic and the cycle goes on ...
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1answer
42 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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2answers
4k 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-...
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1answer
688 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
52 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
141 views

Arduino Uno Remote Controlled Car; Problems with Motor

I am trying to make a remote controlled car. I am using an Arduino Uno, motor shield, and Bluetooth module here are the connections in case they are not clear bluetooth (VCC) -> Arduino (5V) ...
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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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0answers
85 views

Serial Bluetooth Connection Receiving Garbled Data

I'm currently working on project for a custom input device. I'm trying to use a Bluno Beetle to send the input information over Bluetooth Low Energy to another device. Since it's an input device, it ...
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1answer
94 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 ...
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1answer
186 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
283 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
54 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
450 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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0answers
431 views

I can't receive data from HC-05 on android

I would like to send ad8232 sensor data to android. The sensor data appears on the serial monitor however it doesn't appear in bluetooth terminal applications on android. Here's the code : #include &...
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1answer
120 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 ...
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3answers
73 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
129 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 ...
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1answer
694 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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0answers
173 views

Connect Bluetooth SparkFun Bluesmirf to PS4 Controller

I'm trying to connect the SparkFun Bluesmirf Silver board (RN-42) to a PS4 controller. This should be possible as far as I know; however I have been unable to thus far. I have searched the internet ...
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3answers
413 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 ...
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0answers
47 views

Data not sent over bluetooth

I am using a 9-axis accelerator on an Arduino Uno (ATmega328P processor) with a BLE ST shield that can be a replacement for the nRF8001 Nordic chipset that I used in the past. I am able to send and ...
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1answer
370 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 ...
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1answer
406 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
187 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
104 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
2k 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
67 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 ...
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votes
1answer
1k 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 ...
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0answers
109 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,...
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1answer
2k 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
101 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 ...
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0answers
376 views

4WD Arduino Bluetooth car not turning left/right when placed on ground

I'm trying to make a Bluetooth controlled 4WD using Arduino. The car has no problem moving forwards and backwards on the ground, however it won't turn left/right when placed on the ground even though ...
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0answers
280 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 = ...
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0answers
40 views

Bluetooth communication issue

I'm building a car controlled by Bluetooth. I'm using two Bluetooth modules, one HC 05, and the other HC 06. The HC 05 is the master and the HC 06 is the slave. At the moment, I'm doing tests with ...
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0answers
157 views

How to get HC-05 working

I was making a project of voice activated Arduino and I encountered this problem. When I connect the HC-05 to Android and then say something (I'm using the AMR App), it recognizes my voice but the ...
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2answers
460 views

#Ardunio Send Float values with bluetooth.print in arduino

I have been creating the example for bluetooth communication with arduino with hc_05 Problem I am facing are below. String statuss= "1.00,2.00,3.00"; bluetooth.print(statuss); Serial.print(statuss); ...
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2answers
497 views

Splitting Integers

I have bluetooth (HC-05) connected on Serial port of Arduino Mega and two TM1637, I am receiving Strings from an Android phone with an app with two Time picker (Fajar and Zohar) I am sending time ...