A low-power short-range wireless protocol.

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-3
votes
1answer
60 views

Can one bluetooth be connected to two devices? [on hold]

Can one bluetooth be connected to two devices? Not like sharing music from one device to other ones, but the opposite like one device receiving two musics. Like is there a way to do this. Think of it ...
1
vote
1answer
57 views

Is CE marking on module necessary?

Suppose a RF module has passed CE EMC tests. Must the CE marking be printed on the module itself in order for the approval to be valid if it is to be used in an end product?
0
votes
0answers
8 views

Quectel m66 bluetooth usage?

I've been working on m66 and got it connected to PC via usb to serial converter, and got it up and running. AT command replies with ...
0
votes
0answers
17 views

How is proximity unlocking by BlueTooth actually done?

Examples for proximity unlocking (i.e., no buttons need to be pressed) are: Kevo Tesla Keyfob How is this actually done, talking BlueTooth details? My research so far suggests the following: ...
4
votes
1answer
69 views

How to ensure a RF module is indeed FCC compliant as advertised?

Suppose a buyer buys RF modules from China and wants to ascertain that they're indeed FCC compliant as advertised. I'm guessing that this should be a fairly common issue since Chinese ...
0
votes
0answers
13 views

Which bluetooth chip to use for pairing with mono headsets? [closed]

I'm looking to build something to simply have: LED, Button, Vol +/-, Mute (would be nice), audio OUT (from mono headset -> BT device -> port), and audio IN (from port -> BT device -> mono headset ...
-1
votes
1answer
55 views

Which is the better way to send a broadcast signal to a great number of smarthphones in the same place? [closed]

I wonder which could be the better way to send a broadcast signal to a great number of smartphones in the same place at the same time? I'm thinking about 10.000 to 50.000 smartphones in an area of ...
0
votes
0answers
62 views

What happens if a FCC certified module isn't what it claims to be?

Suppose a radio module is already certified by the FCC but the manufacturer decides to ship inferior versions of it without acknowledging that fact, making users oblivious to the change. Do commercial ...
0
votes
0answers
17 views

Button touch Bluetooth sensor [closed]

I am developing an idea that requires a bluetooth sensor sending information to an Android app. My background is in software so I'll figure out the Android part myself. My issue is with the hardware. ...
3
votes
1answer
90 views

Must FCC-certified modules be labelled with the correct FCC ID?

The manufacturer of this radio module I bought claims that it's FCC certified, but there's no FCC ID on it (though there is the FCC logo). If the final product is to be FCC tested, would it then be ...
1
vote
0answers
38 views

Can I use PIR + HC-06 Bluetooth Module without arduino to send events to Android?

I want a PIR sensor to send a "something moved" event to Android. Can I use a simple PIR + Bluetooth module to send such an event? I was thinking that I could connect the PIR output (which goes 5V ...
1
vote
1answer
27 views

What are the considerations for choosing Bluetooth baudrate?

I have an Arduino UNO which will be using an HC-05 bluetooth module to connect to a program running on PC. Its baud rate can be configured from as low as 4800 to as high as 1382400. I know that there ...
0
votes
0answers
13 views

How to stream audio over bluetooth to a device, use a bluetooth modeule with AVR atmega32?

I am trying to finish off a project I am working on that consists of an AVR atmega32 MCU and an on-board op-amp for audio amplification. Currently the device uses a hard wired connection for an audio ...
1
vote
1answer
36 views

Using ATtiny 45/85 with HC-05 (Not arduino)

I am working on a project that requires me to use an ATtiny microcontroller with bluetooth module HC-05. I have used the module with Atmega 8 in the past using UART protocol. Can anyone help me in ...
-1
votes
0answers
23 views

Hardware device bluetooth transmitter to iOS

I'm currently creating an app using bluetooth to record music, especially my voice. I'm thinking of creating hardware attached with microphone, so that inside hardware can reduce the noise sound and ...
0
votes
0answers
6 views

I have a problem in communicating between “BlueSMiRF Silver bluetooth” and computer. [migrated]

We provided connection between BlueSMiRF and computer via Lilypad Ardunio but we can not take data from BlueSmirf Silver to computer. How can I provide communication between ardunio software and ...
0
votes
1answer
40 views

Bluetooth Modules in a plastic enclosure

I would like to implement a bluetooth functionality in my project, preferably using STMicroelectronics SPBT2632C1A.AT2, with a protective enclosure. But I read from multiple sources that bluetooth ...
0
votes
1answer
35 views

Pre-paired bluetooth chips

Is it possible to buy two pre-coupled bluetooth chips? So all i have to worry about is sending USB/Serial data to the master node.. Best regards, Morten
1
vote
2answers
44 views

Antenna mounting question

Here is the datasheet and drawing of the antenna on this link I need to stick out the antenna from a thick metal enclosure, how much of the antenna should stick out? Is it 19 mm (the black rubber ...
0
votes
2answers
67 views

Electronic compass, RF and batteries

I am currently working with a project where i am creating a small embedded board consisting of a 9DoF IMU which is transmitting its data with RF (BLE or normal RF). Furthermore there will be a battery ...
1
vote
1answer
30 views

Effects of encasing bluetooth chip and rechargeable battery in an adhesive encapsulate?

I am thinking to encase my entire bluetooth PCB along and connected battery in an adhesive such as a soft urethane or silicone encapsulate. My board and battery are each about the size of two stacked ...
0
votes
0answers
62 views

how to connect Hc-06 bluetooth to PS3 controller

Hello I am currently having troubles connecting my hc-06 to my ps3 controller. I am building a hovercraft for a school project. I am able to control the lift, thrust and servo via bluetooth from my ...
0
votes
0answers
52 views

Interfacing hc-05 bluetooth module with AT89s52

I am trying to interface HC-05 module with AT89S52 microcontroller for my college project. I have written a send routine in assembly to send data at serial pin TX with 9600 baud rate as follows: ...
0
votes
1answer
38 views

what is the digital communication format that the bluetooth module communicates with

I am using ATtiny2313 microcontroller along with a bluetooth module(HC-05) to communicate with my laptop. Heres my doubt, How does the bluetooth module communicate with the laptop. i.e. what is the ...
1
vote
1answer
35 views

Is it possible to use bluetooth module hc-06 in Master mode

These are two popular modules available in market- HC05 and HC06 I bought two HC-06 modules and trying to establish communication between them. But I failed and a friend of mine said it can be ...
0
votes
0answers
31 views

Bluetooth audio transmission

I am trying a project where I would play music from my tv(doesn't have bluetooth) to the commercial Bluetooth headphones. I have read this post. I already have HC 05 Bluetooth module and want to use ...
-3
votes
2answers
33 views

How could I power flexible oled screens with wearable power source and could I transmit data onto it with bluetooth via app [closed]

How could I power flexible oled screens with solar power and could I transmit data onto it with bluetooth via app? Would this be possible? please can you help thank you
0
votes
1answer
20 views

avr python serial communication all data \xff

I have an ATtiny AVR imicrocontroller connected to HC-05 bluetooth module via USART(TX and RX) of the microcontroller. The microcontroller is sending constant data (for right now) to the bluetooth ...
0
votes
1answer
31 views

How to create a bluetooth module that is both a master and slave?

I'm working on a project that involves having a bluetooth module be a master and slave. I am a dummy when it comes to these things. Basically i need one device like an iPhone to be able to ...
0
votes
1answer
78 views

problem of transmitting data from serial device to bluetooth on Arduino

I am using an accelerometer which uses serial communication on Arduino (UART), I wish to transmit the data to a bluetooth module (blusmirf gold) using I2C and finally read it from my android ...
0
votes
0answers
32 views

What is the lowest sample rate for an ADC to sample Bluetooth IQ data?

I need a little more background to answer properly to this question, but maybe someone here could help me with this. So briefly: if I receive data from a bluetooth IQ demodulator, what should be the ...
0
votes
2answers
50 views

What is the easiest way to send data via bluetooth?

I want to send a serial data which comes as RS232 format from an instrument. Data will be sent by using bluetooth to a mobile phone. So I need to convert this RS232 data to wireless bluetooth in some ...
0
votes
0answers
36 views

Is it possible to increase the range of the iPhone's bluetooth signal?

From what I understand, the iPhone has a class 2 bluetooth module which has a range of 10m. Is it possible to increase this range without meddling with the iPhone's hardware (e.g. without re-soldering ...
0
votes
0answers
13 views

USB-like connection by bluetooth

I would like to ask if it is possible to plug in a bluetooth adapter into the portable drive instead of USB cable to wirelessly explore the data? I just want to make a USB-like connection wirelessly. ...
1
vote
1answer
62 views

HC-06 (BT module) becomes un-responsive after ~20 minutes

I am seeing the following behavior on a HT-06 BT module (http://www.amazon.com/gp/product/B009DZQ4MG/ref=od_aui_detailpages00?ie=UTF8&psc=1) wired to an Arduino Uno. The module works great for ...
0
votes
0answers
31 views

Establishment of a2dp bluetooth connection

I have a problem with establishment A2DP sink Bluetooth connection. I have Allwinner A13 development board and Realtek RTL8723AU Wifi-bluetooth module with installed Linux kernel 3.4.103, bluez 5.28, ...
0
votes
0answers
20 views

Connect/Pair two BCD210 Bluetooth modules

I'm trying to connect my two Parani-BCD210 bluetooth devices. I'm using them through a UART connection from a micro-controller(ATMEL AT89C5131 ). The problem is, I can connect my devices with my ...
0
votes
0answers
111 views

Baud rate from my serial port. Communication between my teensy 3.1 and bluetooth module

I'm facing a trouble about baudrate and I would like to deeply understand how baud is working. I know that baud is symbols per second, and from google search there is a lot of explanations. What I ...
0
votes
1answer
31 views

Can one communicate with smartphones only in a directional cone?

I'm thinking about a device that can communicate with a phone. Think of it as simply something that will tell an app "1" if it communicates with it, otherwise the app will remain "0." But what I want ...
1
vote
0answers
33 views

HF RFID 13.56MHz Interference from WiFi/BLE 2.45GHz?

If a Wifi/BLE antenna were placed within a multicoil loop antenna for 13.56MHz HF RFID, would there be significant crosstalk/interference?
0
votes
1answer
23 views

Sound alarm with Smart Bluetooth

I'm working on a project where my iPhone locates a specific item and triggers a sound alarm when needed. I did my research and found out that this can be done using Smart Bluetooth technology. ...
1
vote
3answers
213 views

Bluetooth frequency-hopping advantages

i'm learning now the about Bluetooth (and BLE) and feel I need some explanation what the advantages of using frequency-hopping method. Can anyone please explain me in simple words (with examples, ...
0
votes
0answers
17 views

wifi direct vs bluetooth : internet access

I'm doing a comparison between wifi direct and bluetooth in connecting a smartphone to a device. I've read many articles about pro and cons of one despite the other, but I haven't seen one (maybe) ...
0
votes
1answer
67 views

Best MCU platform with over-the-air firmware flashing capability? [closed]

I know spark.io is well known for this feature, but I'm searching for alternatives that offer hassle-free over-the-air firmware patching and has also some open implementation examples available. ...
0
votes
0answers
109 views

ATmega328p hc-06 writing correctly but reading gibrish

Last week i have been strugling with getting the hc-06 bluetooth module working on my ATmega328p. Whatever the ATmega sends to the bluetooth module comes correctly on my phone. But everything i write ...
0
votes
2answers
129 views

What technique can I use to focus a Bluetooth 4 transmission (or at least shield it)?

I'm actually trying to focus an iBeacon that uses Bluetooth 4.0 LE. These transmit in the ISM band from 2.4 to 2.485 GHz. Normally these things radiate in a spherical, or half spherical pattern, but ...
0
votes
1answer
71 views

Switchable serial bridge (Bluetooth or USB -> Telemetry)

So I've got a simple serial bridge (wireless telemetry -> bluetooth). Now what I would like to do is to be able to use either USB or bluetooth to access the telemetry module (Not at the same time). ...
0
votes
1answer
110 views

Arduino ECG sputtering out totally random values

Hello StackExchange community, I have encountered a problem in my ECG/EKG design. I am trying to create the ECG using Arduino as a microcontroller to send/retrieve heart rate measurements via ...
0
votes
1answer
84 views

Bluetooth 4.0 - stream mode

I want to use Bluetooth 4.0 protocol for stream communication between MCU(STM32) and Android/iPhone smartphone. Does Bluetooth 4.0 supports any other case scenario than usual(Heart monitoring, fitness ...
0
votes
1answer
47 views

If I have a device that transmits data over Bluetooth, is it possible to get at that data via a different device with my own custom code?

I am looking at building a tyre pressure info system for my car, but would like to make use of the existing receiver and transmitters that screw onto your tyre's valve stems. A model exists that ...