Questions tagged [bluetooth]

Bluetooth enables short-range wireless communication between devices.

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381 views

Problem using Adafruit nRF8001 (BLE) with Ethernet module on Arduino Nano

I'm working on Arduino Nano and I have to use both the Bluetooth LE module Adafruit nRF8001 and ENC28J60 Ethernet module using Ethercard The idea of the project is to receive data from smartphone via ...
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1answer
1k views

Funduino Joystick Shield with Bluetooth

I have a Funduino Joystick Shield (See here Funduino on Gearbeast store) which has some Bluetooth pins. Does anyone know what pins they are connected to, and has anyone successfully connected to a BT ...
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1answer
2k views

Using Bluetooth module HC-05 when Arduino is powered using a battery

I have a project that involves sending messages from an Android device to an Arduino using a bluetooth module. I am using an HC-05 bluetooth module and an Arduino Mega 2560. It works as long as I ...
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0answers
344 views

Send data from computer to phone through bluetooth - Bluetooth SeeedStudio Shield V2.1

So I bought a Bluetooth Shield from SeeedStudio lately (V2 model) and goofed around with it a little bit. I'm using my HTC One M8 to communicate with it just to send some dummy words. Whenever I send ...
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1answer
1k views

BLE SPI Module with ATtiny85

Adafruit carries a number of Bluetooth LE 4.0 modules in their store, notably the SPI (https://www.adafruit.com/products/2633) and UART (https://www.adafruit.com/product/2479) version. I have used the ...
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2answers
814 views

Connection bluetooth master and slave with Android

I send a date from my android to arduino without problem, but also i want send date from arduino to android later of received the date from android. I have time trying it, but i can not yet, help me. ...
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2answers
8k views

Arduino Uno, HM-10 Bluetooth Module, Not Discoverable

In short, I've hooked up an HM-10 to digital pins 10 and 11 on my Uno (required because TX/RX (0/1) can't be used whilst a serial connection is present). The Bluetooth module is a Sunfounder HM-10 ...
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0answers
548 views

Bluetooth help with Arduino Due

I have been able to establish a successful connection between an RN-42 Bluetooth module and Arduino Uno, but I could not do the same with an Arduino Due. The module connects to the phone but whatever ...
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1answer
2k views

Bluetooth connection to HC-05 paired but not connected (in Linux)

I have an Arduino Uno connected to an HC-05 Bluetooth sender/receiver chip. I am trying to create a Bluetooth connection between my Acer laptop running under Ubuntu 14.04 LTS and the HC-05 chip. ...
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1answer
992 views

bluetooth module with stk500_recv() error

I am trying to dow what is demonstrated in this tutorial. I have altered the original setup a little by adding a level converter to not fry the Bluetooth module and resistors for the LEDs, as well as ...
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2answers
11k views

HC-05 Bluetooth Module - INQ-Command doesn't work

For a project I need to connect a Bluetooth Remote control with an Arduino Nano. The Problem I am trying to setup a connection to said Bluetooth remote Control. This device is visible! (I have ...
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1answer
6k views

Connect Bluetooth remote control with Arduino

For a project I need to connect a Bluetooth Remote control with an Arduino Nano. On the Arduino-side I have an HC-05-Bluetooth module. With the Android Application "Bluetooth Terminal" I can verify ...
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2answers
2k views

Can an Arduino act as a GATT Server (Bluetooth LE)

I know it's pretty standard to set up an Arduino system as a BLE client, and use something like an app running on a smartphone as the GATT server, which receives the data and does something with it. ...
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2answers
3k views

Which Bluetooth Module can I use with Arduino Micro/Mini?

I need to use a Bluetooth module with an Arduino Micro/Mini. Please suggest which one would be the best, HC 05/06, or any other?
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1answer
4k views

How to Send Live Sensor Data to iOS Custom Apps with BLE

I am looking for a Bluetooth Low Energy (BLE) device that could send live sensor data from Arduino to iOS custom apps, not the app that is already in the app store. I would like to create my own apps ...
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0answers
30 views

Lightblue Bean BTLE tinkering

How does one modify the Bluetooth settings, like services or pincode, on a light blue bean? Ps I'm on Android http://legacy.punchthrough.com/bean/ if you don't know what I'm talking about
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1answer
167 views

Arduino Micro project with Bluetooth low energy

I created my project prototype with Arduino Micro and Adafruit Bluetooth low energy device. Now I need to develop the prototype to production (like a small USB device). I just need Rx, Tx, 3V pin ...
3
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1answer
538 views

Working with Seed BLE Shield and Adafruit Feather BLE

Long story short: I need to pair these devices: Arduino UNO with Seeed BLE Shield Adafruit Feather 32u4 Bluefruit LE. The Seeed shield is configured and able to connect and communicate via the UART ...
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1answer
7k views

How Master and Slave concept works with Bluetooth?

From what I understand the master has primary control over the slaves and communicates with them. A master must always be present as well, and can be connected to (up to) 7 slaves. Question If I ...
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1answer
588 views

Reading Analog values of bluetooth module HC 05

I am working on a project which requires signal strength of a bluetooth TX and RX. what i assume is that in bluetooth module like hc05, there is an antenna receiver which reads the analog signal and ...
0
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1answer
102 views

I'd like to make RC car and remote controller via bluetooth (HC06)

At first, I tried to make whole code for an RC car and remote controller, but I realized that it's difficult for me since I have few ideas about C++. So, I changed a few things like turning on the ...
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2answers
2k views

Controlling 2 relays with IR remote, push button and bluetooth - sort of works, need help!

I'm still very new to arduino and coding and having some difficulties trying to figure out what I am doing wrong here. This program is to have control over 2 relays, using a combination of an ...
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3answers
1k views

Communication between two Bluetooth modules of two Arduinos

I am designing a home automation project. I want to control different home appliances through GSM. I am designing it in such a way that each apparatus is connected to an Arduino and bluetooth module. ...
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1answer
332 views

How can I program RFduinos and how can I connect them with Bluetooth?

My RFduino dev kit just arrived, and for my project I have to connect a few RFduinos via Bluetooth and light up certain LEDs attached to the RFduinos. If anyone could point me in the right direction ...
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1answer
1k views

Using BLE Nano with LSM9DS1

I'm trying to use the BLE Nano to connect to a LSM9DS1 IMU. However when I am able to connect to the IMU, the values the Nano outputs do not update and do not seem to make sense. I am able to ...
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2answers
375 views

Simple Arduino Bluetooth Shield Android Display [closed]

I need help with my Arduino code. Here is my setup: LM35 connected to Arduino with output connected to Analog 0. Temperature computation work and serial monitor displays the correct reading. I want ...
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1answer
151 views

Computer to multiple arduino bluetooth modules

Im going to take part in a competition called IEEE Very Small Soccer and I need to set up a communication between my computer, that will run visual and strategy algorithms, and send some commands to 3 ...
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1answer
645 views

Having problems with HC-05 and three relays

I'm trying to control three relays with the Arduino Uno rev3 and a HC-05 bluetooth module from Elecfreaks. I've wrote this code: // the comments are the part of the code that I use to replace the ...
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0answers
2k views

MPU6050, Bluetooth — FIFO Overflow and Breakdown

I am quite new to all the arduino stuff and right now I am struggling with a Problem that seems to be easy, but I have honestly no idea how to deal with it. I would like to read the data from a ...
2
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2answers
1k views

Code for password-activated LED via Bluetooth serial

I have this pretty simple task to light up an LED for 3 seconds when I send the right password from my Android phone to the Arduino via Bluetooth. I am using an HC-05 Bluetooth Module. My LED is ...
5
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2answers
16k views

Problems connecting reliably using HC-05 (as bluetooth master)

I currently try to connect an Arduino Micro/Leonardo/32u4 to an ELM327 Bluetooth dongle using a HC-05 Bluetooth shield from iTeadStudio. I also have similar problems trying to connect to a bluetooth ...
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2answers
16k views

Problem activating HC-05 AT command mode with Arduino Uno Bluetooth shield

Please be gentle with me. I am attempting to modify the configurations of my HC-05 bluetooth module by using the AT command set. The method by which I'm trying to do this is by implementing the ...
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2answers
1k views

Arduino Bluetooth Range Control

I am creating a project that uses Bluetooth, But unfortunately it requires some kind of control of the range. I was thinking a potentiometer controlling the power going to the transmitters antenna. ...
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0answers
33 views

Problems with Arduino BT

I have an Arduino BT and I can't connect it to any device I have. I've tried in 3 different situations: Win7 - If I choose 'Connect without a PIN code', the device seems properly detected but it ...
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1answer
108 views

Can't figure out how to send Motor Values over Bluetooth, Arduino Bluetooth-controller robot

I was trying to make an Arduino Robot that is Bluetooth controlled but I've some problems! I can't figure out how to parse strings in Arduino like c++/java/python! I tried this, If the first letter ...
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1answer
760 views

ATMega328 + Bluefruit LE stops working soon after power on (not consistently)

Now I am Running Arduino code for Bluefruit LE on bare ATMega328 with 8MHz internal clock, with Bluefruit connected, pin 0 and 1 RX/TX unused, and AT42QT1011-based capsense circuits (logical input to ...
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1answer
292 views

Bluetooth distorts analog read?

I'm working to make a simple pedometer with Arduino, and after managing to find an algorithm that correctly finds the steps, I added a bluetooth extension (the overly popular and cheap JY-MCU) to ...
3
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1answer
823 views

Is it possible to create an electromagnetic wave using PWM?

What would be the simplest way of making an Arduino emit EM waves using PWM (or without)? Theoretically, oscillating a current through a wire would result in an electromagnetic wave, but I don't know ...
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3answers
2k views

HC-06 data receiving

I've written a script in Python which sends data through the PC's Bluetooth to HC-06 on Arduino. state is an integer from 0 to 1000 (it is controlled through the potentiometer). ... gaugeSocket.send(...
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1answer
750 views

Would Arduino Nano be good for Bluetooth + Sound

So I've been browsing around for a whole looking for a good microcontroller that's super small. So far the smallest one I found was an Arduino Nano. But before I go buying it, there are some questions ...
2
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1answer
654 views

Bluetooth Stream to USB

I want to make a device that will take a Bluetooth stream and play it on speakers via the USB port for speakers that do not have Bluetooth. I think it may be possible by taking the stream and using ...
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1answer
47 views

arduino uno com12

In Arduino Uno, com12 board, already Bluetooth code is installed or not? I am doing the project based on robot using Arduino. I uploaded already one code, it is wrong and I want to upload another ...
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1answer
603 views

Writing data from multiple sensors in burst mode to an Arduino Due

I need help developing a simple sketch that can read data simultaneously from 3 analog accelerometers and send it in 'burst mode' to be stored on an SD card, to reduce the effect of latency. I used ...
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3answers
4k views

Programatic FOTA (Firmware-Over-The-Air) upgrades with Uno R3

I have been searching for a way to upgrade the sketch on my Arduino Uno wirelessly (preferable WiFi, but not a must). Does the Uno support such function? If not - are there any other boards that might ...
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0answers
52 views

How to reset Arduino Uno over BLE?

I'm working on wireless uploader for Arduino over BLE. I've managed to make it working for Arduino Mega 2560 using GPIO and HM-10 AT commands to control GPIO pins. I'm using pretty the same schematics ...
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0answers
102 views

Creating a keypad matrix that will communicate wirelessly with an Arduino Uno

I have a 30 button matrix and I would like to use a keyboard encoder to decipher what button was pressed. I would like that information (what button was pressed) to be wirelessly sent to my arduino ...
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1answer
33 views

Bluetooth Trancievers for arduinos

Would it be possible to use to of these on two separate arduino's, to send and receive information? I am having difficulties understanding the chinese-english descriptions and haven't seen any ...
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2answers
2k views

Sending joystick data via bluetooth

Joysticks usually have two outputs, one for the x-axis and one for the y-axis. Most of the bluetooth modules I have found only have one tx line.. Is there a way to set them up to use one bluetooth ...
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2answers
363 views

HC-06 module versus 1sheeld

Why would someone buy a 1sheeld? Why not connect an Arduino to their smartphone using HC-06 bluetooth module and find an appropriate Android app, like for example RoboRemo. What is the advantage of ...
3
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1answer
107 views

Which wireless technology should I use for my outside “check-if-door-is-open” project?

I want to connect a magnetic door open/closed sensor to a device that can transmit (or be queried for, whichever) the state of the door to a hub inside (probably RaspberryPi). The outside unit should.....