A low-power short-range wireless protocol.

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5 views

How to make a Bluetooth-based USB device?

I have an idea about making a android-based keyboard work with windows using bluetooth-based USB. I know it's a little confusing so let me explain it: I know how can I write a keyboard driver for ...
1
vote
1answer
27 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
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0answers
7 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
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0answers
12 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
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0answers
37 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 ...
-1
votes
0answers
28 views

Minimal BCM43340 eval board [closed]

I'd like to do some testing with the BCM43340 WiFi/Bluetooth module, and I've been looking for a minimal eval board that just has the BCM43340, PCB antennas and everything else broken out. I can't ...
0
votes
1answer
29 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 ...
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0answers
19 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
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0answers
15 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
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3answers
190 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
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0answers
15 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
39 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. ...
-1
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0answers
17 views

How to transmit audio wirlessly from a non bluetooth device to a bluetooth phone? [migrated]

I want to transmit audio from a device having an earphone jack to an android phone wirelessly. How to accomplish it over Bluetooth. I looked at ED05 Bluetooth board and A2DP, H2DP profiles but could ...
0
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0answers
54 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
57 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
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1answer
50 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
90 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
55 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
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1answer
45 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 ...
0
votes
1answer
59 views

Send signal to smartphone via bluetooth [closed]

I would like to know what is the best way of sending a signal to a smartphone, would it be via Bluetooth? The range needed would not be more than 2 meters, and the device sending the signal should be ...
-1
votes
1answer
44 views

Router power switch with bluetooth hands-free

I want to make a bluetooth switch for my wireless router so I can restart it via my phone. I have an old bluetooth hands-free so I'm wondering if it could be used as a power switch. I'm planing to ...
2
votes
2answers
53 views

Does bluetooth implement the 802.11 wireless standard?

I've read that the Bluetooth standard is 802.15, but it is implemented with 802.11. Is this true? Do they interfere with eachother? What standard is Bluetooth considered to use?
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0answers
61 views

Measuring distances electronically? [closed]

Is there any way currently known that can accurately measure the distance between two objects. Say a phone and another device like a chip or another phone. basically measuring distances ...
0
votes
1answer
49 views

Power source interference on Bluetooth audio module?

I am building a Bluetooth Speaker and I been getting static noise or high pitch tone with certain configuration. I am new to electronics, hopefully the seasoned hobbyists here can help me explain what ...
0
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0answers
87 views

HC-06 Auto Reset

I have a HC-06 Bluetooth Module connected to an Arduino Micro. I've hit a problem, the Bluetooth module doesn't seem to auto reset, after a device has connected and disconnected from it again! I've ...
1
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1answer
56 views

Bluetooth Compliance

After spending too long on the Bluetooth SIG (Special Interest Group) and other websites I still have no idea what is required for selling a Bluetooth enabled product so I'm hoping someone here has ...
2
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0answers
46 views

Combine Bluetooth Buttons (Volume up / Next, Volume Down / Previous)

I have a question regarding the control of a bluetooth device, which I would like to connect to some old headphones. Bluetooth SMD Module - BC127 There are some pins on which I can connect the ...
0
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0answers
74 views

Cannot retrieve data from homemade ECG

For the past couple of weeks, I have not been able to find a solution to my problem. My problem is that I cannot retrieve the data from my homemade ECG that I created from Arduino, using plans at ...
0
votes
2answers
56 views

Bluetooth range and Power

what happens when you increase the power of bluetooth? Is it possible to increase the range of a bluetooth signal?
1
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2answers
182 views

What are the UART voltage levels for the RN4020?

I've recently bought an RN4020 BLE module, but I'm having figuring out how to make it work. In the datasheet some pins are listed as 1.65V input, 1.35V out, while ...
1
vote
1answer
84 views

small scale positioning system

I have previously entered a competition called "robocup juinor australia" for a few year now with increasingly good performance each year, this year we have been sponsored for over 15k which is a big ...
1
vote
1answer
183 views

Bluetooth audio stream to commercial headset

I would to connect my simple audio player (Arduino + https://www.sparkfun.com/products/11125 ) to a Bluetooth headset you can buy at the market. How can I do ? Is it possible ?
0
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0answers
112 views

HC 05 piconet 1 master 2 slaves

I was wondering if it is possible to connect 3 HC05 Bluetooth modules. I would like to have one as master sending messages to all (2 as a start) slave modules (the slaves are connected to arduino to ...
0
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0answers
28 views

Cannot receive heart rate data using JYMCU Arduino

I am encountering an issue trying to retrieve a heart rate reading from an op-amp and instrumentation amplifier and sending it via Bluetooth. I used this website as a basis of my design: ...
0
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1answer
63 views

Bluetooth - NFC communcation

I want to build a device that would recieve a NFC TAG and send it via Bluetooth to the Mobile Phone, that has Bluetooth enabled. I am searching for some basic articles or some starting points on how ...
-2
votes
1answer
44 views

Bluetooth Interference with High Pitched Tone

i'm building a portable stereo system and am having some unwanted noise from the bluetooth receiver. the noise is typically a high pitched tone. please see the attachment for my chicken scratch ...
0
votes
1answer
47 views

Best RF frequency for my application

I need to design a device that can transmit an RF signal about 200 meters. The data transferred is very simple. One device simply has a button, that when pressed transmits a two-digit ID to the ...
0
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0answers
52 views

Bluetooth antenna design

I am building a system with bluetooth/wifi/GSM. Since I am an RF noob, I have some questions regarding antennas. Some modules come with loop antenna and if you want to create your own PCB there is a ...
0
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0answers
70 views

Can I put a bluetooth dongle inside a cantenna?

I've got a remote temperature doohickey for my BBQ that bluetooths to my phone. Works great; love it; nice UI. It's small, 4 cm diam x 2 cm thick, but the range is good, 50-60 feet. But. I want a ...
0
votes
1answer
55 views

HC06 Weak Transmission

I have been working for a while with a HC06 bluetooth module along with an Atmega 168A microcontroller and everything was fine until a day ago when the bluetooth transmission just went off. Data is ...
2
votes
2answers
84 views

Data Whitening Block Diagram

I would like to understand this block diagram and how it relates to the formula: g(D) = D^7 + D^4 + 1 Supposedly this helps to generate a whitening word used within bluetooth radio, the empty boxes ...
1
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1answer
62 views

Amateur designing a quadcopter: is it possible to use Fizzly for remote control?

I am a total amateur, so forgive me if my question is naive. I am starting to design my quadcopter, and I was wondering if it would be possible to control it via bluetooth using Fizzly. It would be ...
0
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0answers
48 views

Trying to use BC417 bluetooth with LM4F232H5QD Evaluation Board

I am new to embedded. I am using STELLARIS LM4F232H5QD Evaluation Board. I want to get data from this board using bluetooth. And i have ...
2
votes
2answers
398 views

How to detect a Bluetooth low energy device or IBeacon without a smart phone?

I am putting together a simple project where my ibeacon (or a small BLE device) causes the receiver to trigger an alarm when inside the range of the receiver (5 ft max). The receiver will not be smart ...
0
votes
1answer
111 views

HC-0X Bluetooth Module Difference between Slave & Master

whats the difference between a Module HC-05 Master and HC-06 Slave? I have a slave module (HC-06) but im not sure whats the purpose of the word "Master" in the HC-05
1
vote
1answer
66 views

Can I modify this bluetooth keyboard to only have a certain keys so I can carry it around?

I'm trying to make a bluetooth remote shutter release thing for Androird and iOS. I asked about doing it from scratch but everyone thinks it's too ambitious for a beginner, so I gave up on that Few ...
-1
votes
2answers
163 views

What's the difference between CC2564 and CC2564MODN bluetooth TI chips?

As per title, what's the actual difference between these two chips? I dug extensively the TI site but I cannot find such info.. thanks!
0
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0answers
62 views

What's the size of the Bluetopia Bluetooth stack?

As per title, what's the size of the Bluetopia Bluetooth stack on a MCU flash? TI says that the minimum requirement is 128KB. Can I use a 128KB flash MCU? Do I have some room for something else? ...
2
votes
2answers
498 views

Connecting external 2.4GHz antenna to Intel Edison

I would like to connect an external 2.4GHz antenna to an Intel Edison. According to Mouser, there are different Edison part numbers for different antenna configurations (internal or external). ...
0
votes
2answers
182 views

Play audio from raspberry pi through my car's disc changer

I'm interested in trying to buy a raspberry pi and create a small bluetooth / airplay type module that I can plug into my car somehow and get wireless audio streaming. I don't necessarily care about ...