Questions tagged [bluetooth]

Bluetooth enables short-range wireless communication between devices.

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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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96 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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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 ...
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175 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
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
126 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
482 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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2answers
6k views

HC-05 Bluetooth module doesn't read data correctly from my Android phone

I have made a home automation project where am using an Arduino Uno and HC-05 Bluetooth module and an Android app. I did everything properly but when I send commands from my Android app it works ...
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2answers
693 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
724 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 ...
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2answers
216 views

Arduino: Camera streaming [closed]

I want to make Arduino to stream video by camera thru bluetooth to android. Is Arduino powerfull enough to stream it without lag(Sorry if the question is stupid) Are there any good cameras, I have ...
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1answer
70 views

Can an accelerometer be used to detect heart sound?

I've recently come across accelerometer and how it can detect electrical mechanical response. I was wondering can it be used to detect heart sound? Lets say you attach the device close to your chest (...
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0answers
253 views

Custom RFID and Bluetooth Module [closed]

We have developed a custom board with the RFID Scanner and and a Bluetooth Module built into it. The data from the RFID scanner is supped to be read and sent to Bluetooth built into it and then is ...
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0answers
100 views

Any Arduino device that records body data? [closed]

I'd like to conduct a research on transmitting body data like ECG from a device to a another device via Bluetooth. Is there any any arduino device that allows to collect such data? I've found this ...
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1answer
290 views

HM-10 only works when holding button

My HM-10 bluetooth module is behaving weird. In order to have it operate normally, I have to keep holding the small black button on it. If I ever release the button, it just disconnects from my phone ...
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2answers
277 views

Merging arduino code

I have a project where we need to create a virtual cane for blind people and it will have 3 functions: Pressure button when pressed will connect to an android phone through HC-06 Bluetooth modulo to ...
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2answers
44 views

Could someone explain this code that sets up the software serial port data rate?

I understand most of it. The part I don't understand is the is the code in for void loop. How does that set the data rate for the software serial port? I thought mySerial.begin(9600) did that? Please ...
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1answer
463 views

Adafruit Feather 32u4 Bluefruit LE and HC-05 Bluetooth module

Is it possible to connect an Adafruit Feather 32u4 Bluefruit LE with an HC-05 Bluetooth module? I am making a heart rate monitor using an Adafruit Feather, but it is unable to send the data to ...
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1answer
65 views

Can arduino nano board support bluetooth earphone and python for sound function? [closed]

sorry for disturb, i new and no basic on arduino language and board. Now i have a project on my hand, and with this arduino nano board, i have a ultrasonic sensor that will detect object, is it ...
1
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1answer
341 views

Protothread Library Stalling on One Thread

I am trying to use a protothreading library found here http://harteware.blogspot.com/2010/11/protothread-powerfull-library.html to perform protothreading with my Arduino so I can "simultaneously" ...
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1answer
412 views

Reading/Writing Strings with Bluetooth Windows API

I am trying to use my HC05 so my Arduino can communicate with my Windows 10 PC. I have a program written using the Window API for Serial Communication but the problem is it looks like the Arduino/HC05 ...
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1answer
280 views

Connecting a servo via HC05 and HC06

I want to drive a servo via a HCO6 and HC05 link as a stand alone, using no android or PC. The question is how to send a 1.5 ms signal (generated with a pulse command on a Nano) from one HC to ...
2
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1answer
622 views

Bluetooth HM-10 in central mode bonding with another bluetooth device

I have a bluetooth HM-10 configured in central mode. I have successfully connected it to another bluetooth device (a hexiwear bluetooth wearable). The problem now is that the hexiwear requires me to ...
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0answers
278 views

Triggering actions in Android smartphone via Bluetooth from Arduino

Am working on a wearable using Arduino Micro and I am thinking it would be cool if I can trigger some events in my smartphone using Arduino. Say for example a button press in my wearable should ...
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2answers
2k views

Connecting Arduino Uno to a smartwatch via bluetooth

I have a U80 Smartwatch from Bluetooth Watch International, which has bluetooth function. It is meant to be connected via to my smartphone (and it works perfectly). I also have an Arduino Uno board ...
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0answers
313 views

Reading HC05 Output

I am using an Arduino Mega connected with a motion sensor and HC05 bluetooth chip to transmit distance data to a larger computer, process it, and send a data back. Currently, I am having trouble ...
1
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1answer
206 views

Blueduino Rev2 service UUID for web bluetooth

I have a Blueduino Rev2 board that I would like to have communicating with a web app (running the chrome bluetooth software) but I'm having trouble sorting out the service UUIDs that the web bluetooth ...
2
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0answers
149 views

Boat project - object detection [closed]

My project is to control a dual motor model boat via bluetooth hand-held device. I am using an Adafruit feather 32u4 bluefruit LE and Adafruit DC Motor + Stepper FeatherWing Add-on. I am using the ...
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1answer
234 views

Which is RX and TX pin of the HM-10 module?

i recently bought hm-10 ble module which works using cc2541 ti SOC but problem is there are many ports the the bluetooth module but the seller has not mentioned which is rx and tx pins so... I wanted ...
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1answer
481 views

Bluno + PS3 controller?

I'm seeking information about connecting a PS3 controller using Bluetooth to an Arduino. Bluno cards could be an integrated solution for that, but can it work? Also, I've seen some tutorials using ...
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2answers
421 views

How can I control the speed and direction of dc motor at the same time (through Bluetooth

I am working on a project of an arduino car it's simple really i know how to control the speed and direction using simple button but I was looking for an upgrade so I add a virtual joystick in my app ...
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1answer
2k views

Can't manually connect HC-05 master to slave

Using this as a tutorial, I've tried to connect the master Bluetooth module from my Nano to the slave module in my Mega. After following the steps in the tutorial, when I enter the command to my ...
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0answers
118 views

Arduino LilyPad and nRF8001 module wiring

I am trying to wire up a nRF8001 BLE module with the LilyPad board, as the title says. The problem is that if I wire them up I am not more able to see the nRF8001 module during the scan phase with ...
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1answer
2k views

Adafruit nRF52 feather board [SOLVED]

I am working on a project (the scenario is depicted in the attachment) involving Bluetooth Low Energy (BLE). As a master (central device) I am using the Adafruit nRF52 feather board (https://learn....
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2answers
429 views

DigitalWrite Cannot Power HC-06 Bluetooth

To save power consumption, I tried to connect the HC-06 bluetooth module to a digital pin of my Arduino Nano. (HC-06 +5V <=> pin 11, HC-06 gnd <=> gnd) In that way, I can toggle the bluetooth ...
0
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1answer
590 views

Arduino UNO two SoftwareSerial ports communication

I am working on a project involving bluetooth and wifi communications. Both of them are wired up to the Arduino and communicate to it using two software serial port. The scenario is the one in the ...
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1answer
270 views

HC-05 emit data without pairing

Is it possible to emit data from an arduino connected to a hc-05 Bluetooth module without pairing it to another device? i.e. imagine that I want to send a Bluetooth signal as if it was a information ...
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2answers
4k views

Arduino with HC 08 bluetooth module

I am connecting Arduino Uno R3 with HC 08 module lie following Arduino 5v -> HC 08 Vcc Arduino gnd -> HC 08 gnd Arduino Pin 5 -> HC 08 RXD Arduino Pin 6 -> HC 08 TXD Then I connected two ...
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0answers
43 views

Arduino - IR firing problem

I am trying to build a mobile application which will be capable of firing different channels via Bluetooth HC-05 and Arduino UNO. We are getting IR codes from Android to Arduino through Bluetooth and ...
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2answers
10k views

HC-05 Bluetooth Module Blinking Red Light-Arduino Uno

I have looked on google for an answer to my problems to no avail. The you tube video I am following is here: https://www.youtube.com/watch?v=f1v0IMegCvU So basically on my android, I can't see the HC-...
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1answer
78 views

Unable to flash Arduino when TXD pin of HC-6 Bluetooth module is connected to Arduino RXD pin? [duplicate]

Unable to flash Arduino when TXD pin of HC-6 Bluetooth module is connected to Arduino RXD pin? I get the following error: Flashing with command:C:/Users/home/.arduino-create/arduino/avrdude/6.3.0-...
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1answer
3k views

How do I connect through a HC-05 to PS4 Controller?

Searching for Arduino and PS4 on google, I find always the same construction using a USB host shield and a Bluetooth dongle. But I'd like to connect a PS4 Controller to a HC-05 device. Is it possible?...
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0answers
325 views

Project Idea Guidance: LED strips that react to music [closed]

I want to build something similar to the ViVi as shown in this video: ViVi - Fully Automated Reactive Music LED Controller with VibeSync Technology. Compact and Wearable, but I would like to make ...
2
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0answers
185 views

Scheduling and BLE Read on demand

I'm building a data logging device with BLE capability using RFduino. Sensors are read using timer interrupt to a buffer. When the buffer is full, then the whole buffer is written to SD card. At the ...
2
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2answers
411 views

Bluetooth Communication Not Working with DC Power But Works With USB Power?

I am running a HM-10 Bluetooth Low Energy (BLE) module to transmit serial data (using SoftwareSerial) from an analog sensor onboard my Arduino Uno to a serial terminal app on my Android phone. When I ...
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3answers
688 views

What is the best way/module to talk to an Arduino from far away (WIFI)?

I am new to Arduino and IoT. I plan to build a product that I will connect to an app and they have to be able to communicate from a very far distance (kilometers). Bluetooth is not a good option then ...
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1answer
2k views

How to work with arduino softwareserial communication using HC-05?

This is my first project using bluetooth module HC-05.i am using two of this module.one is with arduino nano(slave) and another one is with arduino uno(master).I have paired them through AT commands . ...
1
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1answer
400 views

CurieBLE receive data without pairing [closed]

I read exist articles about it, but still not understand how to do that. I have a Genuino 101 and an EEG Headband (neuro interface). Need to get data from neuro device. With external HC-05 bluetooth ...
1
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2answers
5k views

SPP-C and HC-05 are they the same thing or something else?

I was actually thinking to buy a cheap HC-05 module while I was searching I found a similar (think so) module It say it is a replace for HC modules. Is it compatible with Arduino Nano and will it ...
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1answer
114 views

Avoid blocking from bluetooth callbacks

I'm developing a wearable data logging device. Sensors are sampled at 20Hz, and written to a SD card through a buffer. There is an Android app that could query the status of data collection (size of ...