A low-power short-range wireless protocol.

learn more… | top users | synonyms

2
votes
0answers
43 views

Does a 40 MHz radio frequency have any interference to Bluetooth signal?

From my understanding, the Bluetooth signal is using a 2.4 GHz frequency. However, when someone is playing with a 40 MHz RC vehicle, the Bluetooth signal keep on getting interrupted or disconnected. ...
0
votes
1answer
39 views

What components do I need to connect a phone to my device via Bluetooth?

I have a phone I want to connect to a docking station I am making, via Bluetooth for as cheap as possible. As I understand the situation, all I need is something that can pick up a bluetooth signal ...
0
votes
0answers
28 views

AT Commands of OVC3860 bluetooth module [on hold]

Last month, I bought OVC3860 bluetooth audio module on eBay. I found its datasheet and AT Command sheet. I could communicate with bluetooth module by using AT Commands. But I couldn't find any ...
0
votes
3answers
122 views

What is the component in bluetooth module

Last month, I bought a bluetooth audio module on eBay. And I wonder what components are on this PCB. In the picture, what is the component in the top red box? What is the component in the bottom red ...
-2
votes
1answer
22 views

Bluetooth or wifi board [closed]

I am looking for a smallest solution for a board with either bluetooth or wifi module, so I can set up communication with a mobile phone. I know that maximum size should be 3cm x 2cm (1.2 in x 0.8 ...
-1
votes
0answers
40 views

Understanding the tradeoffs between UHF and Bluetooth in Remote Keyless Entry

I've been doing some research on remote keyless entry, and I am wondering why Smart Keys and the like use UHF in key fobs, instead of Bluetooth Low Energy? Is it because BLE has only been a round a ...
23
votes
5answers
4k views

Why 2.4 GHz Band?

Bluetooth, WiFi, Zigbee, Remote Controls, Alarms, Cordless Phones etc.. Why all of these protocols, devices, etc. use 2.4 GHz band instead of 3.14 GHz. What is so special about it?
0
votes
1answer
50 views

Control relay from Bluetooth on ATtiny85

I know someone else has made a Bluetooth transmitter to a relay so i wanted to ask a few questions about it being possible? I am an almost newbie at electronics but i do know a few things, so first of ...
0
votes
1answer
39 views

Audio bluetooth board. RX and TX?

Looking at a usb bluetooth audio aux device board I saw RX and TX. What are these points for?
1
vote
2answers
92 views

Is it possible to have an universal RF receiver and transmitter (Wifi / Bluetooth)

First of I should make clear that I'm not an engineer. My friends who are helping me with this project are. But me.. well lets just say I know the basics. Problem I have to be honest, it's a first ...
3
votes
0answers
68 views

Can several bluetooth devices be seen as one unique device from the point of view of an Android smartphone?

I need to put multiple bluetooth modules in various places so that they trigger something on a smartphone. Of course the smartphone has to grant access to the bluetooth device at some point, but I ...
0
votes
1answer
97 views

HC-06 Bluetooth module not responding to any AT commands

I am trying to interface with a HC-06 module but I can't talk to the module over serial. My VCC is connected to 5V (also tried 3.3V) of my Arduino Uno, and GND is connected to ground of it ...
0
votes
0answers
31 views

Bluegiga BGScript blinkylight example

I'm trying to code BGScript but I have some questions. Can you help me? I have DKBLE112 which is Development Kit of the BLE112 module built around the CC254x, an 8051 derivative with an on-chip BLE ...
0
votes
1answer
64 views

Bluegiga BGScript Accelerator sample. I want to understand the example code

I started BGScript few days ago. I have many questions about BGScript. Any help will be appreciated. Thanks! *My goal is advertising with accelerator data via BluetoothLE. I am going to use ADXL345 ...
1
vote
2answers
74 views

Most energy efficient way to detect motion

I am hacking together a prototype wrist band, with BLE as the main component. I'd like the device to detect a bump or a wave. What would be the most energy efficient way to do so? I'd like the ...
0
votes
1answer
21 views

Bluetooth device identification & information during pairing

Let's say I'm creating a device that communicates with the computer using Bluetooth. I'm at the point where pairing and exchanging data between the device and the computer works. Is there anything in ...
0
votes
0answers
33 views

Serial Port Profile connectivity in CSR 8670 Audio Development Kit

I am trying to make connection between my CSR 8670 Audio kit and Android phone through SPP profile, But while trying this came to know that my SPP Profile on Kit side is not enabled. I am trying to ...
1
vote
0answers
52 views

L293D causing motors to move slowly

I'm modifying an RC car to use bluetooth. I use the L293D chip, and when I connect the motor to the chip, the car barely moves. If I connect the 9V battery directly to the motor, it moves the car ...
0
votes
0answers
17 views

Changing bluetooth identification data

I bought this bluetooth audio module from DX.com. Is it possible to change the bluetooth identification name, which appears on the phone to pair, from what is mentioned?
2
votes
2answers
99 views

Bluetooth Low Energy general questions

I'm facing some problems understanding how Bluetooth LE works. First: How is a connection established? Peripheral (eg sensor) sends advertisements Central (eg tablet) has to scan actively ...
1
vote
0answers
32 views

To Activate RFCOMM in CSR8670 Audio Development Kit

I have a device CSR-8670 which act as SINK and on another side I have Android phone which act as Source. I am able to connect through RFCOMM when my both server and client is ANDROID phone but not ...
0
votes
0answers
41 views

UART PIC18F8722

I'm trying to connect a bluetooth module (the baudrate is 9600) with a PIC18F8722. The connection is with UART and I programmed this: ...
0
votes
0answers
54 views

UUID of CSR 8670 AUDIO DEVELOPMENT KIT

Does anyone have any experience ,how to make changes in UUID of CSR 8670 Audio Development Kit? Actually I am trying to connect my Android Device with this CSR Audio Dev. Kit but am not able to make ...
0
votes
1answer
45 views

Bluetooth keyboard?

Can the Bluetooth board "XS3868" be used for in a Bluetooth keyboard for a computer? Without using an Arduino
1
vote
3answers
48 views

Using Bluetooth 4.0/LE verses RF

I am asking this question in hopes to get a solid answer from anyone who has direct experience dealing with the most recent RF as well as Bluetooth 4.0/LE developments. What I am essentially trying ...
1
vote
2answers
217 views

Is Bluetooth less susceptible to jamming than wifi?

I am developing a mobile peer to peer application that will probably be subjected to RF jamming, and I'm wondering if bluetooth is perhaps less susceptible to jamming than ad-hoc wifi. Bluetooth has ...
0
votes
0answers
44 views

HC-06 Bluetooth low power mode?

I'm currently using the HC-06 BT module and am trying to figure out if there's a low power mode available. I've found documentation online that say's there is a sleep mode but says nothing about how ...
0
votes
1answer
58 views

bluetooth headset with LCD and memory

I was wondering if it is possible to create a bluetooth device which would have a LCD screen and some memory (1kb) for making and receiving calls. From my research ( and I am far from an EE, but ...
0
votes
0answers
18 views

Strange bluetooth module behaviour and UART tips

I'm bit new trying out with bluetooth modules and I started using one. Bluebee Gold Bluetooth devicedevice link The first problem that I have is when is configure my controller(PIC) with setting RX ...
1
vote
2answers
85 views

Bluetooth module (BLE112) USART: do I need to use its own microcontroller?

I am looking into the this module. All I need it for in my design is USART connection to my MCU (TX/RX connections). I don't care for the internal microcontroller (yet). My question: if I connect, ...
0
votes
0answers
23 views

Audio streaming issue with CSR-8670 kit

We are using Source App in "Analogue mode" in which we reached to a point where our kit is able to paired with the mobile device but when we start to play audio in mobile through paired CSR audio ...
1
vote
1answer
59 views

Bluetooth Module with Analog Input

I'm building a wearable Bluetooth device. When a button is pressed on the device, it sends a signal to the user's smartphone and consequently an app on said phone. I'm an app developer with no ...
1
vote
0answers
30 views

Bluetooth CSR8670 - How to make the kit discoverable? [closed]

I am working on CSR8670 Development Kit, in which I am trying to make the kit discoverable and also trying to pair the Kit with another Device.If anyone having any experience about CSR8670 kits ...
0
votes
1answer
46 views

Bluetooth 2.1 EDR sniffer

I'm new to Bluetooth technology and I'm trying to find something capable of sniffing Bluetooth 2.1 + EDR data. I see a lot of BLE/4.0 related devices. So far the closest things I've found were: ...
3
votes
1answer
179 views

Possible to re-program microcontroller over Bluetooth?

I am looking at making an embedded design featuring an ARM Cortex M3 MCU and bluetooth. I would like to be able to update its firmware over Bluetooth periodically. Is this possible with the following ...
2
votes
3answers
96 views

Wireless EEG electrode design

Currently, all 'wireless' EEG systems acquire signals from electrodes which are wired to an amplifier, a filter, a digitizer and then finally a wireless module. I want to design a system that's ...
-2
votes
1answer
77 views

What signal will come in?

I have a simple setup as shown, I would like to know what kind of RF signal will come in? Since the filter is configured around 2.4GHz, will all ISM (WiFi, Bluetooth, Zigbee, etc.) come in? The ...
0
votes
1answer
49 views

Measruement of RF Signal strength / phase difference

I would like to measure the signal relative strength and phase difference of two bluetooth(BT) receivers. and I found a chip that will do exactly that, AD8302 ...
0
votes
2answers
47 views

Xbee module and bluetooth module

Is it possible to connect Xbee module (Using Xbee shield) as well as Bluetooth module at the same time to any of the Arduino boards like Uno? Most of the sites give information about connecting one ...
-1
votes
1answer
66 views

Bluetooth project | Bluetooth transmitter connection to android mobile [closed]

Description: I want to create a Bluetooth transmitter that will pair with my android phone. I will send a ping(alert kind of notification) from my Bluetooth transmitter device(on a button press), and ...
1
vote
1answer
88 views

Can two BLE devices communicate?

I researched that starting from Bluetooth v4.1 a BLE device can be either a master or a slave. I was curious if anyone has tried it? And how to go about it. Also I am new to hardware and would like ...
0
votes
2answers
59 views

MCU cannot communicate with Bluegiga WT12 module

I have the evaluation kit EK-WT12 for Bluegiga WT12 module being controlled by a TI Launchpad. I have used the evaluation kit to communicate to a computer with SPP profile and I have sent and received ...
0
votes
2answers
78 views

Can bluetooth LE detect a touch using proximity?

How accurate is the proximity feature in BLE, can I detect if two BLE are touched tougether?
1
vote
0answers
104 views

A Project on Bluetooth | Bluetooth beginner | video tutorials of basic bluetooth projects | not audio bluetooth and arduino projects [closed]

Description: I want to create a Bluetooth transmitter that will pair with my android phone. I will send a ping(alert kind of notification) from my Bluetooth transmitter device(on a button press), and ...
0
votes
0answers
58 views

USB CDC RS-232 interface to Bluetooth or WiFi

I have a device that communicates with a computer via an USB CDC RS-232 interface. The thing is that I want to build an interface (on top of that USB interface) that enables the device to ...
0
votes
1answer
194 views

Programmable Bluetooth transmitter

As I develop my R&D project I decided to add bluetooth to the mix... In the first stage I decided to use my own iMac as a transmitter and my iPhone as the receiver, and it worked great... As I ...
0
votes
1answer
72 views

Identifying a bluetooth development device

This is some kind of bluetooth development device and I want to find out if this can be used with BlueLab software suit, but cannot find more details on it The main chip is BlueCore BC358 The ...
4
votes
3answers
1k views

What will I see in oscilloscope when attempting to analyze Bluetooth or Wi-Fi signals?

I would like to know what will show up if I put bluetooth or wifi carrier signal (2.4GHz family) in a say 50MHz oscilloscope? Am I going to see something like a rectangular block? And the only ...
0
votes
1answer
116 views

I get back wrong chars from bluetooth module (uart)

I would like to communicate between my atmega8 controller and PC via an HC-06 bluetooth module. I should get back the same char that I send but I get some wrong characters. The bluetooth module uses ...
0
votes
2answers
77 views

Inputs to a Wiimote using a microcontroller

I've seen various methods of grabbing inputs and sensor data from Wiimotes and Wii Nunchuks as standard Bluetooth HIDs into microcontrollers like the Arduinos, but is there a way of sending button ...