A low-power short-range wireless protocol.

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20 views

Interfacing two BLE devices with no UI

I'm wondering what the best way to connect/pair two BLE devices which have no screen. Most applications with BLE use a smartphone, tablet, or computer as the central device, and in these cases it is ...
0
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1answer
41 views

Building a bluetooth buzzer

I'm hoping to build a simple bluetooth buzzer using a Serial Port BLE module: HM-10. When a slave connected to it, if the slave sends a certain predefined message, the buzzer sounds for one minute. ...
0
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1answer
33 views

Does Bluetooth 4 or 802.11b/g/n penetrate through walls better?

I'm thinking of building a signal beacon designed to be used indoors. The transfer speed isn't critical but range and penetrative ability are. Does anyone know if Bluetooth 4 or 802.11b/g/n might be ...
0
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0answers
22 views

Sending data from Atmega8 to Android through HC-06

I am building up a communication between Atmega8 and Android device through HC-06. The uC can read the comfortably. But when it sends data the received data is garbage. The baudrate of working UART is ...
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0answers
16 views

Not able to receive signal from bluetooth module on PC, works on mobile [migrated]

I am using an IR receiver with a baud rate 9600, which sends signal to a bluetooth module. I am able to see the data which is sent on a mobile device with a simple BT terminal application. However, ...
0
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0answers
25 views

Bluetooth serial to bluetooth audio module

I was looking to work with a bluetooth audio module but many of the available options are either very costly, unavailable in my region(India) or generally lack some features. What is commonly and ...
2
votes
1answer
64 views

How to make arduino GPIO to operate at 3.3v instead of default 5v

I am working on a project, I use arduino mega 2560 with system operating voltage of 5v, at the same time I have a Bluetooth module which operates at 3.3v is there any way to reduce my arduino output ...
0
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1answer
31 views

Two 2.4GHz radio modules (XBee+Bluetooth) on same PCB. How to minimize interference?

I'm designing a PCB with XBee radio module and a bluetooth module (RFDuino SMD with XBee 2mW Radio). Since both of these modules are using 2.4GHz, are there any special consideration about how to ...
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19 views

Bluetooth alternative to feed sensor data to mobile device

I want to create a small device which would contain a sensor and send the data from it to a mobile device (assuming Android platform here, but this does not have to be the case). I'm interested in ...
0
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1answer
38 views

What is the speed of a baud rate? - RN42

After wondering/researching about this for days, I finally ask this question: What is the speed (bits per second) of a bluetooth SPP RN-42 device? Is 1 baud = 1 bit (thus 9600 baud = 9600 bits per ...
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0answers
12 views

Sketch Upload to LinkIt ONE Timeout [migrated]

I've just bought a new LinkIt ONE IoT prototyping board, and I'm having trouble getting started with it. I'm working on a mac. I've installed the LinkIt ONE SDK onto my Arduino IDE as specified in ...
0
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1answer
31 views

How do I get a chinese nRF51822 development kit running examples with an ST-link, Keil uVision?

I've been working at this for days with not much information out there to assist me in fixing my issues, so I figured I'd make a post here. I'm using a cheap chinese nRF51822 module and ...
0
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1answer
18 views

Can I tell if the HC-06 bluetooth is connected?

I seem to see that the HC-06 device behaves like a serial device with TX/RX. I also understand that this needs to be "connected" to a blue tooth master to send/receive data. Is there a way that I ...
0
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0answers
33 views

Bluetooth HC-05 to RN-42

In a project I have the original bluetooth module was an HC-05; however, their was an issue and I had to purchase a replacement. Sadly my local microcenter only had the Parallax RN-42 available. ...
0
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1answer
78 views

UART to Bluetooth

I seem to find only partial explanations regarding this question, I've used Bluetooth in previous projects but I plan to use it on an FPGA project. Currently The FPGA is connecting using a UART ...
-1
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3answers
65 views

Is there a way to change baud rate of a Bluetooth module wireless?

Or is there any other trick to do it? I need to change a baud rate of my Bluetooth module, I have tried it via Windows Bluetooth settings of the particular Bluetooth device, but that doesn't work. ...
7
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1answer
121 views

Should the unused areas on the top layer of my RF PCB have ground pours?

I realize there are some questions that are related to this topic but I didn't see any that are really RF specific. I am working on a 2-layer Bluetooth module and I have some unused spaces on the top ...
0
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0answers
45 views

Strange problem HC-06 Bluetooth module not responding after 2 minutes or less

I'm trying to send data over bluetooth from my android application to my pic16f877 via hc 06 bluetooth module . I'm able to connect to my hc 06 module and turn led on & off (by sending 2 string ...
0
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1answer
21 views

SPBT2632C2A Operating Voltage Related

It the SPBT2632C2A compatible with a 3.3v Logic System? I was thinking of using it with a BeagleBoneBlack, Absolute maximum rating is rated for 5.5v, So i can feed the module power from a LM1117-3.3 ...
0
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1answer
45 views

Can HC-06 be used as a Bluetooth server to which multiple devices can connect?

Title sums it up. I want to use my AVR to be a bluetooth server for multiple Android devices. Is it possible? If iy is not what other method can be used to achieve this?
0
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1answer
36 views

Can bluetooth be used in an application of notifying people when their friends are near them, assuming both have bluetooth enabled devices [closed]

I have a project. I want to make people aware that their friends are near them without using any internet. Is bluetooth a better option? Or is there anything better than this?
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1answer
60 views

After research, how should I go about creating a bluetooth peripheral?

My goal is to create a very simple (1 input, 1 output, both high / low states) bluetooth peripheral to be worn on the wrist to connect to an android phone running Lollipop. I have the following ...
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0answers
114 views

Serial AT commands with Bluetooth CSR8645 module

I bought a Csr8645 (bleutooth audio module). The module connect to my phone out of the box... It should support some AT commands. So I have tried some but I don't get anything in response. The only I ...
0
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0answers
34 views

Connecting a USB device as a Bluetooth slave

I'm trying to connect my Android phone to a USB gamepad via Bluetooth. I'd need a Bluetooth slave with a USB female port. I've done some searching and some asking, but I can't find any devices that do ...
0
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0answers
34 views

Should the output of a USB-UART module linked to a bluetooth module the same than just the USB-UART module just wired?

I have a device controled by a UART protocol just conected to my PC. I wanted to make it wireless, so I tried to create this conexion scheme PC -> USB-UART -> Bluetooth module -> Bluetooth module ...
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1answer
34 views

Battery Cell Properties [closed]

I have a pair of Bluetooth headphones with a 3.7v, 180mA battery cell. I am wondering if it would be possible to increase the battery cell by replacing it with maybe a 5v or 9v. However I don't want ...
0
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0answers
23 views

BLE mini read not working

I recently brought a ble mini and configured it correctly updated my firmware. I am using asus zenfone 5 and android version 4.4.2. I am trying to use the simple chat program. I am able to send data ...
-1
votes
1answer
142 views

Can a Bluetooth wireless connection bridge a USB Host and USB device?

Now that Bluetooth modules are dirt cheap, I'm wondering if I could make a pair of wirelessly connected objects that would act as a "virtual USB cable". One would have a pig tail with a USB Male plug ...
0
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1answer
34 views

Use of RFID or suitable alternative to remotely communicate change in system state

I have a physical system which is dispersed over about 20-30 metres cubed and at random points within this space there are electronic nodes which have single binary outputs. I want to monitor every ...
-3
votes
2answers
89 views

Connecting to Wifi over Bluetooth for embedded systems

I know that these two (Wifi and Bluetooth) are in the same range of frequency (2.4 ghz. At least mine ones are this way). I do not think wifi modules for embedded systems (I use AVR) are cost ...
0
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0answers
21 views

multiple bluetooth on same board

I am designing a board with 2 bluetooth modules. Will this raise issues for EMI certifications and such. Since, there are 2 bluetooth chips on the same board. Will there be a collision and such with 2 ...
0
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1answer
60 views

Arduino mini bluetooth module communicating with an Android device without using an app?

Is there a way to communicate between arduino device and the android device through the bluetooth? I know it is and for that is used some pfodApp, but what if I ...
1
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1answer
35 views

Adding bluetooth input to old stereo

I am adding a bluetooth receiver to an old suitcase style record player / am radio. I have a bluetooth receiver which runs of 5v (usb normally). I have connected this to the volume pot, through the ...
1
vote
1answer
67 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
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1answer
123 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
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0answers
23 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: ...
3
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1answer
81 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 ...
-1
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1answer
62 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
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0answers
65 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 ...
3
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1answer
159 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
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0answers
66 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
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1answer
54 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
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0answers
24 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
114 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
vote
1answer
61 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
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1answer
44 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
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2answers
51 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
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2answers
89 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 ...
2
votes
1answer
45 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
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0answers
163 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 ...