A low-power short-range wireless protocol.
1
vote
0answers
47 views
Building a wireless keyboard (preferably with a kit)
This is the project that spawned these earlier questions.
I'd like to create my own keyboard. Functionally it's going to be a keyboard, but visually it's going to bear more semblance to a joystick ...
2
votes
2answers
64 views
How to connect sensors to an Android device?
I need to build a device, which measures several parameters (body temperature, conductivity and pulse) and transmits them to an Android mobile device.
The system has following parts:
The sensors
...
0
votes
2answers
50 views
Make two bluetooth modules communicate directly?
Can one buy two cheap (and identical) bluetooth chips and make them talk to each other without needing a PC or a mobile phone?
I'm guessing the answer is a basic 'NO', but I might as well ask.
...
-2
votes
0answers
42 views
DYI Beginner Bluetooth [closed]
I'm a ME by profession (and a new one at that)...I hobby in web app dev (Mainly RoR) and am curious about making bluetooth accessories for iPhone/OS X/Windows...
Where's a good place to start?
I'd ...
1
vote
0answers
40 views
Most compatible Bluetooth modem to use with Arduino Uno R3?
I'm looking for a Bluetooth modem that can be connected with the Arduino Uno R3, and communicate with Android mobile device. I found one modem (the BlueSMiRF RP-SMA) but it was to expensive, and it ...
1
vote
1answer
20 views
Using two bluetooth profiles at the same time to make a wireless keyboard
I'm trying to build a wireless, two part keyboard using bluetooth and arduino. Imagine a normal wireless keyboard but split it in two with the numeric keys on the right placed on a separate unit. Then ...
0
votes
1answer
88 views
Can the Signal from a Coaxial Cable be Transmitted via Bluetooth?
If so, can the coaxial signal be maintained without degradation (think inserting a transmitter in the middle of a coaxial connection to relay that signal wirelessly without actually interrupting the ...
1
vote
1answer
47 views
USB interface to bluetooth interface for digital scale
I've got a situation where I need to communicate wirelessly between a bluetooth-enabled Android device and a digital scale which can be accessed digitally via USB.
While normally I would be happy to ...
2
votes
1answer
69 views
Do I need a RTOS?
My hardware would have a DSP with the following characteristics:
Sound generation (internal parameter will generate pure tones, white noise, filtered white noise or the sum of them).
I2C ...
-3
votes
0answers
22 views
Selecting a BT stack [closed]
I am selecting which bt stack fits for me but i am not sure about it.
My hardware must be composed of a BT module with SPP/iAPP + HFP/HSP support (probably one from Panasonics as they are smaller) ...
3
votes
1answer
98 views
HC-05 Bluetooth module not recognized by mobile phone
Its a bit weird whats its happening with the bluetooth module. Aparently it works perfectly, it gets recognized bt my desktop computer and my laptop, but never gets listed on my mobile phone.
I've ...
10
votes
1answer
239 views
Do different frequencies have different capabilities?
I read that google was planning on purchasing a spectrum from the Fcc and they were going to use it to transfer data. I was wondering if the value of the frequency affects the data that is being ...
-1
votes
0answers
33 views
Bluetooth Chip like vTag: Pairing, Buzz, Alarm (Vibrate) & Battery [closed]
The idea is created a chip that functions like vTag but the other way around... using the Bluetooth chip to alert (not find) that the iPhone is getting out of the "sight"/far away. If it already ...
3
votes
1answer
65 views
Combination of Zigbee and Bluetooth 4.0
Is there any product with a combination of both Zigbee and Bluetooth 4.0 protocols? If not is it possible to design a module with such combination?
-4
votes
0answers
72 views
Advice needed: Develop a bluetooth device at the size of finger ring [closed]
I have a small requirement. I like to amplify the microphone signal of a smartphone (android/iphone/windows phone) using a bluetooth device that can be worn on finger as ring. The idea is not to loose ...
5
votes
2answers
63 views
How to connect RFduino to internet?
I backed the RFduino project on Kickstarter to use it in my next project. It is basically a tiny Arduino compatible board with built in Bluetooth LE that supports additional shields.
I've also got a ...
5
votes
3answers
27 views
How can I create a serial bridge using two Bluetooth dongles?
I own two of the SparkFun BlueSmirf bluetooth modules and I would like to connect them to eachother - one as the master, and one as the slave. It is easy to pair these together using a PC with Putty ...
2
votes
1answer
61 views
Bluetooth bee and different profiles
We got a bluetooth bee for testing purpose on hardware. Unfortunately the device only seems to run SPP. But it seems possible to do more than that.
Here's the product:
...
-3
votes
1answer
145 views
Bluetooth modules differences Android [closed]
i am not really well informed about the different types of Bluetooth modules, so i wanted to ask u what is the difference between these :
...
3
votes
3answers
198 views
RF Design: A Bluetooth Repeater
I am currently stumped in the design process in creating a method to intercept Bluetooth signals with an antenna and simply outputting the exact signal through another antenna.
Some Background
I ...
1
vote
0answers
82 views
Pros and cons of Blueradios BR-LE4.0-S3A or Panasonic PAN1721 [closed]
Quite new to BLE and modules and development, but I am trying to research so I can take the info to a development company to get them to create a small custom device with a sensor.
However I am torn ...
0
votes
1answer
93 views
Monitoring distance between two moving objects
For a new product, I'd like some help in understanding what technology would be best for creating a wireless connection between two moving devices and having them constantly monitor the distance ...
1
vote
0answers
74 views
Why does my bluetooth dongle use more current when paired then when idle?
I have a bluetooth dongle which is connected through USB to my PC. I wanted to measure the current drawn and hence I connected an ammeter in series with the 5V line and am measuring the current. I ...
2
votes
2answers
90 views
How to build a switch with Bluetooth?
I have a small circuit with a battery and a lamp. If I close the circuit the lamp will turn on, otherwise will turn off.
I want to create a very small wireless switch. It will have only 2 signals ...
1
vote
1answer
102 views
Pairing to a module containing multiple Bluetooth units
I’m working on a project where a module is suppose to stream an audio signal to multiple receivers via Bluetooth. To be able to connect more than 7 units to this device, I thought of using three ...
1
vote
1answer
282 views
Broadcast audio to multiple receivers via Bluetooth
I want to be able to connect multiple Bluetooth devices to a Bluetooth transmitter, and then stream audio from a portable MP3 player, via Bluetooth, to all of the connected Bluetooth receivers. Is ...
2
votes
3answers
296 views
arduino and bluethooth usb dongle
Is it posible to use a mini USB bluetooth dongle like this one
(image)
in order to improve my arduino UNO so it can comunicate with other bluetooth devices? If it is, how can I do that?
1
vote
1answer
82 views
Connects To The Device That's The Closest
I need some expert advice or ideas.
Please note I'm not a student nor practitioner of Electrical Engineering.
I'm working on a product idea where a device will automatically connect to another ...
1
vote
1answer
114 views
Bluetooth low energy Power Consumption in Sleep state
I constantly read about the low power consumption of BLE and websites stating
Power consumption:
Since a Bluetooth low energy device is in sleep mode most of the time - the maximum/peak power ...
-5
votes
1answer
100 views
Creating Simple Bluetooth Device [closed]
I want to create a small bluetooth device, something that can be carried on a key chain, pendant that sort of thing, connect to a mobile device, and interface with an app that I will develop. The ...
1
vote
0answers
85 views
Advice regarding bluetooth microcontrollers
I am doing some research into a potential electronics project I would like to try out. What it involves is having a collection of small remote devices that communicate with a larger central device. ...
0
votes
0answers
250 views
Example code for CSR1000 BLE central mode operation [closed]
I am trying to program a Cambridge Silicon Radio CSR1000 (datasheet) powered BLE module, the Rayson BTM800, to discover the peripherals around it and initiate connection. The uEnergy SDK provided by ...
0
votes
1answer
133 views
Connecting an environmental sensor to multiple smart phones [closed]
Newbie heading for the deep end here, I am working on a project where a number of students will use smart phones to connect via bluetooth to sensors placed around a woodland. It has occurred to me ...
-3
votes
1answer
89 views
Bluetooth protocol question [closed]
It is my intention to make my own bluetooth mouse.
What is the protocol like? For starts I won't be making my own hardware but will be using an emulator.
What emulator do you suggest I use, and is ...
-1
votes
1answer
234 views
Small bluetooth chip to connect a phone with [closed]
i'm looking for a small bluetooth chip which i can connect my phone with.
The idea is that i should be able to send a command to that chip with my phone. In return that chip should do something. For ...
0
votes
1answer
90 views
Bluetooth Interference between piconets
I am developing a device that consists of a base station and several wireless sensor nodes. In application there may be up to 30 of these devices in a laboratory with up to 5 sensor nodes ...
3
votes
2answers
357 views
adding a yagi antenna to a bluetooth dongle
I want to set up a Bluetooth link between devices that are over 2000 feet apart. Yagi antennas for 2.4GHz that can connect to routers are available. A cheap Bluetooth dongle that can be easily taken ...
6
votes
1answer
264 views
Bluetooth vs Bluetooth Smart (Low Energy)
Im trying to decide between Bluetooth and Bluetooth LE. My device needs to transfer 375 bytes per second. Bluetooth LE can send packets of 20 bytes max, so this boils down to about 20 packets per ...
1
vote
4answers
237 views
Microcontroller with rotary encoder and bluetooth capabilities [closed]
I am looking for advice on (what to use/how to make) a rotary encoder that I can connect to through bluetooth. I am writing an app that needs to display on screen in real time to the user the number ...
-1
votes
2answers
771 views
Bluetooth Wireless Audio Module (V3.0/V4.0) for us audio interested laymans? [closed]
Hope I'm right asking my question here.
I'm building myself a boombox with wireless audio transmission.
With as of introduction of the iPhone 4S Apple gadgets (and obviously others) nowdays have ...
4
votes
2answers
915 views
Can a Bluetooth 4.0 BLE device talk to a Bluetooth 2.1 device at the most basic level?
I want to develop an app on an Apple iPhone, that has Bluetooth 4.0 BLE embedded, that talks to a basic piece of kit with a bluetooth 2.1 chip in it?
Firstly - is it technically possible - if I only ...
1
vote
2answers
123 views
Suggestion for USB sniffing SW
I am hoping for a suggestion; some back story:
My ultimate goal is to learn the intricacies of the Bluetooth connection shared between a PS3 and a Sixaxis controller. I am fairly versed in Bluetooth, ...
1
vote
2answers
294 views
Serial / UART to Bluetooth module [closed]
Im searching for a very cheap/simple UART to Bluetooth (LE) module, but all I can find are modules like the BlueGiga BLE112, which seems like complete overkill (USB, GPIOs, ADCs, etc). I also came ...
1
vote
1answer
106 views
Credit Card Sized BT receiver, circuitry, eink display and power supply. Possible?
New to this forum. Read a bunch of replies to other 'like' questions, seems a lot of you know your stuff. Forgive me if this has already been postulated (don't think it has).
Curious to see if you ...
2
votes
2answers
120 views
Using an old Bluetooth-enabled Blackberry as a GPS
I have a few Blackberry devices with integrated GPS functionality. Given that the SIM is no longer activated, is it possible to use this device as a second hand GPS unit?
My thought is that I can ...
-2
votes
1answer
168 views
How can I build a voltmeter / logger? [closed]
I want to build a device whose primary function is a voltmeter without a display. Instead of having a display I want it to interface with a smart phone via bluetooth to read the voltage. Optionally I ...
2
votes
1answer
388 views
China bluetooth modules and RS232c with RTS/CTS
I've been having a lot of fun (mostly using other people's instructions) with some of those cheap bluetooth modules (via ebay specials) from China. I'm just getting my feet wet learning the actual ...
1
vote
2answers
1k views
Transmitting a video stream through a microcontroller
I'm working a a project that currently works well but this year we want to expand it by collecting data from it, independent of its current functions. We have set up an iPad App to control an Arduino ...
2
votes
1answer
2k views
How to make an USB keyboard work with Bluetooth instead?
I have an USB keyboard (HHKB) which has some great irreplaceable features(That's why I would not like to buy a Bluetooth keyboard directly) and I love to use it very much. But the only improvement I ...
2
votes
1answer
790 views
Arduino & JY-MCU Bluetooth module
I've got a bluetooth module from dx and connected it to my Arduino UNO R3. It was working just perfect but after a couple of hours of work it just stopped sending data.
I think, the problem is with ...
