Questions tagged [bluetooth]

Bluetooth enables short-range wireless communication between devices.

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2answers
2k views

Can I use a 6 pin Bluetooth module in a 4 pin socket?

I have a Funduino joystick shield and it features a 4 pin bluetooth socket in the top right hand corner (just above the D, T, - and + legends). For some reason, on eBay, 6 pin bluetooth modules are ...
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1answer
142 views

Arduino Bluetooth connection with Android

I am wondering why my Arduino program won't start its sketch to connect a bluesmirf to an android device and send data to the android whenever I use an external power supply. The sketch starts ...
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1answer
345 views

How can I build a simple “Smartwatch” with Arduino Pro Mini and Display?

I want to know how I can build a simple "Smartwatch" with an Arduino Pro Mini and a Display with a size from maybe 1,5" what Display should I use for Touch and color? I only want simple things like ...
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0answers
901 views

Bluetooth Module AT command error?

I am trying to get my Arduino UNO to communicate with a Bluetooth Module (Bluetooth Bee), but I am getting a weird behaviour from the device. First, there are no leds blinking on the board (which I ...
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1answer
92 views

Which bluetooth module should I buy?

I am doing a wireless rover using arduino mega 2560 that can be controlled by a smartphone and a PC. Which bluetooth module would fit me? Again I want to control it both by my Laptop(Built-in ...
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1answer
250 views

Bluetooth not transmitting refreshed sensor values

I have a 9 DOF sensor attached to a BLE chip and Arduino Uno. I want to send the position measurements (i.e. x, y and z coordinates) from the sensor to my iPhone app (Bluefruit LE). The code below ...
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3answers
1k views

Having issues with Arduino + Bluetooth

I am working with a combination of Teensy++ 2.0 and Sparkfun Bluetooth Modem. The Arduino program, inside the loop, continuously reads a sensor value. If the value read is above a threshold, the ...
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1answer
826 views

Set Bluno Beetle to Broadcast mode

I recently purchased Bluno Beetle (basically a smaller Arduino with a BLE chip). It is based on the Bluno: Wiki I know that its Bluetooth Chip, the TI CC2540, supports the Broadcast mode: Official ...
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0answers
169 views

Arduino Mini Pro 3.3 V Issue with Bluetooth Mate

I have an Arduino Mini Pro 3.3 V powered from a coin cell(3.6 V, CR2450) and connected to Bluetooth Mate Gold. I have checked the connections and they are fine. I can also connect to the bluetooth ...
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4answers
272 views

Blutooth shield LED control

I am trying to control a led ON/OFF using Arduino UNO and a Bluetooth shield I have this which is based on hc-05. The tutorials I found about hc-05 are not working for me. I have the hc-05 embedded ...
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1answer
1k views

How to transfer data from arduino to android via bluetooth? [closed]

I am having arduino uno board connected with bluetooth HC-05 module. I needed to transfer the data from arduino to android mobile via bluetooth. Is it possible to transfer the data from arduino to ...
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1answer
3k views

Arduino bluetooth module as a server

I was looking around becouse I need to simulate a OBDII device. I think about to use Arduino for that. I was reading some tutorials how to use bluetooth module but I didn't find any tutorial when ...
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4answers
4k views

Choosing wireless tech for lowest possible lag

I am drafting a pub quiz project, where the Referee gives a signal and multiple players push their buttons. The first to push wins the right to give an answer. I want all buttons (referee's + X ...
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1answer
928 views

Reading iBeacon Data using HC-05 bluetooth module

I have bought a HC-05 bluetooth module for Arduino. My requirement is to read data transmitted from iBeacon, is it possible using HC-05 or I have to shift to HM-10?
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0answers
106 views

Arduino not responding while trying to flash over BLE

I'm working on wireless uploader for Arduino from iOS devices. I'm using HM-10 BLE module which seems to work ok. PIO 2 is used as DTR for resetting (see A [0x41] T [0x54] + [0x2B] P [0x50] I [0x49] O ...
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1answer
471 views

BLE Mate 2 bluetooth module to Arduino Uno without FTDI SmartBasic

So I'm trying to hook up this BLE breakout board to an Arduino Uno. SparkFun has a hookup guide which seems to be great for someone who has an FTDI SmartBasic that is mentioned in the article. I don't ...
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1answer
400 views

Sketch Upload to LinkIt ONE Timeout

I've just bought a new LinkIt ONE IoT prototyping board, and I'm having trouble getting started with it. I'm working on a mac. I've installed the LinkIt ONE SDK onto my Arduino IDE as specified in ...
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0answers
116 views

YUN as BT keyboard

Sort of a follow up to Yun as bluetooth master, but this is to get the yun to act as a slave device. Specifically, I want it to be a BT keyboard. I could probably do it on my own, but I need to find ...
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1answer
1k views

Fastest wireless communication

Hy guys, I am currently working on a quadcopter stabilization algorithm for an indoor quadcopter. I now need to setup a wireless communication between my onboard Arduino and my controlling Arduino (...
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0answers
327 views

Yun as bluetooth master

How does one make an outgoing bluetooth connection? I have already installed packages for bluetooth, and have run hcitool scan to find the BT address. And I'm using a USB BT dongle. Output of lsusb ...
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1answer
1k views

Can a connection of HC-05 and Arduino Nano receive audio and display waveform on computer?

Working to receive Music for Bluetooth Speaker via HC-05
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0answers
46 views

WLAN module compatible with ArduiMU V3+

Current I use my ArduiMU V3+ with a Bluetooth Mate (from Sparkfun) but I've got a lot of connection problems with it. I'm looking for a better solution involving WLAN and am wondering whether there ...
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4answers
3k views

Running multiple tasks at once

For a school project we're working on a wearable device to track people's movement and heart rate. We use an Arduino Pro Mini with a heartbeat sensor and an accelerometer. The wearable device uses ...
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0answers
648 views

Feedback Request: HID USB to Bluetooth Relay

Bluetooth Relay Project: Develop a USB to bluetooth adapter for my mechanical keyboard. Using a USB host shield, have an Arduino Pro Mini read keyboard usb commands and repeat them over bluetooth. ...
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0answers
337 views

Bluetooth shield with ardudroid RGB LED

Here is their code: /* PROJECT: ArduDroid PROGRAMMER: Hazim Bitar (techbitar at gmail dot com) DATE: Oct 31, 2013 FILE: ardudroid.ino LICENSE: Public domain */ #define START_CMD_CHAR '*' #...
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0answers
762 views

Serial Communication with two bluetooth modules on Arduino Mega

I'm trying to communicate with two bluetooth module (RN-42) on the Arduino Mega. I studied about Serial communication in Arduino, and I used Serial1, Serial2 to get information at the same time from ...
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4answers
9k views

Arduino and HC-05 hardware serial issues

I have a software sending bitmap data to an Arduino Pro 5V 16MHz 328P that drives an LED display (sketch). This works using the USB-Serial adapter for the Arduino Pro with baud rates up to 500000 Baud....
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3answers
2k views

Bluetooth transfer problem with big files

I want to send some data from an Arduino Mega to an android device via bluetooth (HC-06). I have installed some sensors whose values are frequently written in an SD card. Every time a new string line ...
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2answers
833 views

SoftwareSerial problems

Hi we are using an Arduino Micro and working with a Bluetooth device and a Rfid Scanner from Sparkfun(ID-20 LA). For that we implemented 2 SoftwareSerial objects and the Serial port for the Serial ...
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0answers
1k views

Arduino code issue (using Bluetooth and Rfid technology)

I am building a device that communicates with my Android phone. I know that my App works but my Arduino code seems to have a problem. So I have made a smaller programm and everything works fine there. ...
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2answers
83 views

Connect bluetooth module when no pins free

I need do communicate atmega88 with a smartphone via bluetooth using a bluetooth HC-05 module. The problem is that all my atmega pins are being used. Rxd and txd pins are being used by a keypad (...
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1answer
404 views

How can I stop someone from hacking in to my Arduino via Bluetooth?

I am using an HC-05 bluetooth Module. How can I stop someone from pairing with my device by brute forcing the key? Failing that, and if someone does pair with my device, is there a way to authenticate ...
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1answer
4k views

Arduino Bluetooth and Ultrasonic Distance Sensor (HC-SR04): printing values over BT gives error

I'm trying to send the reading distance of an HC-SR04 sensor to an Android app, using Bluetooth. I succesfully managed to send values from many other sensor to the app, but when it comes to sending ...
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2answers
10k views

HC-06 Bluetooth RX & TX voltage (3v3 || 5v)

I acquired a HC-06 Bluetooth module, and understand that the voltage on the pins must be 3v3 and therefore requires the use of a voltage divider to lower the Arduino's 5v to 3v3 like this. But the ...
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0answers
858 views

HC-05 and HC-06 Bluetooth not communicating well

I am trying to communicate between two Arduino UNO. One has a HC-05 which is configured as master, the other Arduino has HC-06 which is the slave. What I want to achieve is to be able to print a ...
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1answer
704 views

Android Studio project for Redbearlab BLE Shield apps

To interact with its BLE shield, Redbearlab published sample Android apps in the Play Store. The sources for the apps are available on GitHub. How can I build them in Android Studio?
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1answer
861 views

Program arduino via USB while using a Bluetooth module (HC-06) [duplicate]

I have my Arduino Nano connected to the HC-06 module (with the RX/TX pins). My issue is that when I try to upload new code to my Arduino (via the Arduino IDE, through the USB connection) the Arduino ...
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1answer
38 views

Questions Concerning Arduino Compatible Boards

I've seen an Arduino-compatible board called Bluno from DFRobot. I'm curious if a shield, specifically the DFRobot motor shield can be connected to the Bluno. Can anyone confirm if it can be ...
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1answer
88 views

SoftSerial freezes on comparing getInt to int

I have a robot application on my Arduino which basically takes values from a SoftSerial instance on my 0/1 pins (connected to a Bluetooth board). From the 'driver station' I send speed values to the ...
1
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1answer
8k views

Is it possible for a HC-05 Bluetooth module to have multiple slaves

For a project I am interested in using the HC-05 Bluetooth module to control five LEGO Mindstorms Bricks simultaneously. For this to work the Bluetooth module will obviously have to be paired / ...
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2answers
2k views

Uploading over Bluetooth Low Energy - bootloader not responding

I'm working on sketches uploading over BLE. I had to write my own uploader (looking at avrdude sources with one eye) so i can change uploading behaviour as needed and it's working over USB just ...
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1answer
283 views

Install Bluetooth inside a home theater, How?

I have a 5.1 home theater(old one), I would like to transform it into a audio streaming system. I have a Arduino UNO and HC-05 Bluetooth Module, and I don't know how to install it in my home theater(...
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1answer
2k views

Wrong characters received with Bluetooth Mate Gold using Software Serial

I have a Bluetooth device from Sparkfun which I would like to use with the Arduino Mega. If I connect the module via the hardware serial pin everything works fine but when I use other pins like 12 and ...
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2answers
3k views

How to Communicate between arduinos wirelessly?

I am doing a project where I need to send some numbers between arduinos. But it has to be wirelessly because they will be moving. How to Communicate between arduinos wirelessly? I need to send data ...
0
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1answer
890 views

Send \r or \n via phone serial monitor

I have a bluetooth adapter connected to uno, and using a serial monitor on phone. In the arduino code im debugging there is this line waiting for new line signal in the serial stream: char c = ...
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2answers
3k views

Android stops reading from bluetooth module

I am trying to read from a bluetooth module connected to arduino Uno. My application is a simple counter where the values are displayed on the arduino and the android app. The problem is that my ...
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0answers
1k views

HC05 to HC05 Handshake Communication

I am attempting to connect an Arduino Uno to a Modern Device RBB Arduino. One is the base and the other the remote. They need to set up a simple handshake to communicate an on and off condition from ...
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3answers
4k views

How can I use a BlueSMIRF Silver (RN-42) as a HID Keyboard (on IOS)?

I've got a BlueSMIRF Silver (RN-42) Bluetooth module. I am trying to create a basic keyboard I can play with on an iPad Air. At the moment barely manage to get the module to pair with OSX but only ...
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0answers
93 views

Don's NDEF library and bluetooth

I am trying to connect my Android smartphone with my Arduino Uno by sending a NDEF message to my phone. I know that the MIME type for bluetooth is application/vnd.bluetooth.ep.oob but in my PN532 ...
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0answers
276 views

DFRobot Bluno + Relay Shield

I'm a new to all things electronics and I'm having trouble using a DFRobot Bluno V2 with a DFRobot Relay Shield for Arduino V2.1. For testing purposes I've done the exact same circuit as represented ...