A low-power short-range wireless protocol.

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25 views

How to use hc-05 with pic32

I want to use Hc-05 bluetooth module with my pic32 controller for communicating with other bluetooth devices. I want to test the hc-05 module with my pic32 controller. I have made the hardware ...
0
votes
2answers
59 views

Wi-Fi vs Bluetooth communications to android phone

I am interesting in getting a device, (bare metal micro-controller with sensors), to communicate to an android phone. The device is not wearable and the power difference between Bluetooth and wifi as ...
-1
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0answers
20 views

iOS compatible Bluetooth module for high throughput [on hold]

Suppose I want to transfer data from an AVR-based device (say ATMega2560, preferrably an Arduino) to an iOS device (iPad or iPhone) at a decent speed (at least 200kbps), what bluetooth modules are ...
0
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1answer
25 views

Difference is Bluetooth Smart and Bluetooth audio

My name is Raveen Baloo. I have been doing a lot of research on the types of Bluetooth module. For my project, i do need a bluetooth which will be able to have simple communication with a mobile app, ...
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1answer
42 views

Factory Reset a HM-10

I had programmed a HM-10 module to act as iBeacon with my Arduino Uno's serial monitor using the following steps: AT+RENEW Restores factory defaults AT+RESET Reboot HM-10 AT Wait for OK ...
0
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1answer
38 views

Dual mode Bluetooth for transmitting audio and connecting with an App [on hold]

​Hi my name is Raveen Baloo from Singapore. Currently, I'm working on a project, building a case box which has a MCU and a LCD screen. A removable bluetooth dongle is connected to the case box which ...
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1answer
47 views

How does the bluetooth work for wireless earbuds? [on hold]

Wireless earbuds are the new methods of listening to music, but how does the bluetooth work? Does the phone send two separate signals to each earbud? Analog or Digital? How does it work?
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27 views

what is dual band bluetooth?

can we send and receive data through dual band Bluetooth simultaneously ? what are the requirements to receive and send data through Bluetooth from two devices at a time
0
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0answers
38 views

Is it possible to read RFID card and trasmit the data to Android device using bluetooth transceiver without using any microcontroller?

My aim is to read RFID card and have the data on android device using bluetooth. Devices I am thinking of use are 1. RDM6300 RFID Module - RFID Reader 2. Bluetooth Transceiver Module Do suggest any ...
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0answers
71 views

Using USB Bluetooth receiver with speaker

I built this USB/9V mini speaker: I want to add Bluetooth support to it, so I bought this cheap USB Bluetooth receiver. My plan was to remove the plastic casing and the USB plug and add it to my ...
0
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0answers
38 views

RN 42 to RN 52 communication

I am attempting to connect an RN 42 bluetooth device to an RN 52 device, and then the 52 to a cell phone. The RN 42 is planned on being used a wireless controller, having all capabilities of ...
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0answers
37 views

RN 4020 bluetooth module not working as expected

I am trying to communicate with a Bluetooth module using PIC32MX110F016. I have made the schematic and produced the PCB which was straight forward. There's a logic to put the module working but I ...
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1answer
89 views

PIC32mx UART to Bluetooth RN4020

I am trying to establish an UART comunication between PIC32MX110F016 and a RN4020 Bluetooth Module. I am new on PIC32mx but I think I am doing enough code/configuration for them to comunication but ...
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0answers
4 views

Arduino Uno, HM-10 Bluetooth Module, Not Discoverable [migrated]

In short, I've hooked up an HM-10 to digital pins 10 and 11 on my Uno (required because TX/RX (0/1) can't be used whilst a serial connection is present). The Bluetooth module is a Sunfounder HM-10 ...
0
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1answer
111 views

Are RF shields necessary?

I see that some wireless devices like Bluetooth speakers don't use shields like this one but some do. My understanding of FCC Part 15 is that only modules need shields. So how come some devices use ...
0
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5answers
81 views

Will the data throughput decrease if the transmitter and receiver are in motion?

What I'm thinking of is a 2 way communication (voice communication) between two systems which are in motion. (like 100 km/h difference) Will the data transmission and reception be disturbed, by how ...
1
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2answers
62 views

Bluetooth based Sensors to the Cloud, processor choice?

This is a pretty broad question, but I'm curious to hear how people would go about this and what parts they would use to do the heavy lifting. Imagine you had a bluetooth module, it works fine and ...
1
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1answer
30 views

Bluetooth class “Limited Discoverable Mode”

I have a Bluetooth-device with class 20258C. - It's a remote control. According to the Class of Device (CoD) Calculator this means the device has the following ...
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0answers
31 views

IAR Workbench Error[Pe146]: too many initializer values

While debugging the project, it appeared me this error. Can you tell me what i should do to solve it? Thanks
3
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1answer
80 views

FCC's allowable margin of error

Below is taken from the test report for FCC Part 15 for a Bluetooth module: The heading says "2402Mhz", but the marker shows 2401.9772MHz. It's 23kHz off. However, does FCC permit this kind of ...
2
votes
2answers
41 views

Affordable way to test frequency range of a 2.4GHz device [closed]

Does anyone know of a good/affordable way to test the frequency range of a RF device (e.g., Bluetooth module)? Not spectrum analysers since they're rather unaffordable. Are there relatively affordable ...
1
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1answer
58 views

Using BLE, how fast can I get ~50 bytes of data from the master to a slave? How does that change when increasing the number of slaves present?

In personal project of mine I'm looking to have a system where a number peripherals need to have provided to them, in as real-time as possible, small (~50 bytes max) amounts of information from a ...
0
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1answer
31 views

Auto switching from bluetooth to aux

I'm building a project where I would have both a bluetooth receiver and an aux in line connected to the same speaker. One way could be to detect the presence of jack inserted in the aux in connector ...
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0answers
118 views

Hook up bluetooth antenna to an Arduino (Or similar)

I have a Bluetooth ELM327 adapter that I am using with my car's OBD2 port. I have an Arduino UNO compatible Magpie (Little Bird Electronics) which I would like to use to interface with this adapter. ...
0
votes
2answers
65 views

Micro controller programming with bluetooth dongle

I have this USB bluetooth dongle . I want to know is it posible to active this dongle with PIC 16F628a micro controller and communicate with PC. I know this micro controller support serial ...
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2answers
83 views

How to send (simple) data from GATT client to server?

I have a PCB which is using a TI Bluetooth LE chip (CC2541). I'm hoping to send some simple weather data from the client (e.g., phone) to the server (CC2541) infrequently (once a day/week). Will a ...
1
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1answer
32 views

add a second antenna

My application requires to connect through Bluetooth reliably. I have an issue is that the receiver is not always in line of sight and when not, I experiment connection drop. I would like to have 2 ...
0
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0answers
52 views

Bluetooth Module - Power Supply

I am finding some problems with my project. I want a Bluetooth module powered from batteries to connect to my headphones directly. I found this cheap module: BLK-MD-SPK-B and although the ...
0
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0answers
33 views

Wireless communication in and out of an elevator

I'm wondering which is the best wireless communication protocol for communicating with an elevator. The idea is that there would be a master or hub inside the elevator and it would communicate with ...
0
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1answer
58 views

Beacon detector using microcontroller and BLE

I am looking for BLE device which can detect ibeacon or beacon module/tag. I am interested to use microcontroller with BLE module instead of smartphone for beacon detector. Can any one suggest where ...
4
votes
2answers
227 views

Bluetooth module throughput / UART baud rate? How fast is it?

I'm choosing a Bluetooth module for my project. Reading datasheets like this: BM78 Module I can see sentences like: ...
1
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1answer
55 views

Using/Substituting a Coin Cell Battery

I wish to run an MCU (for bluetooth to be specific) which commonly runs on a coin cell battery. I was wondering if it was possible to replace the regular CR2032 battery with the smaller and cheaper ...
4
votes
1answer
47 views

Bluetooth Compliance and Qualification

It seems that all Bluetooth-enabled devices require the Bluetooth SIG Qualification in order to be marketable, but it isn't clear why it's needed so I'm hoping someone here has more experience. I've ...
0
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0answers
38 views

Built in clock for HC-05 bluetooth chip

I want to add bluetooth to a game controller. The controller has 3 connections I'm unsure about: Data clock, Data latch, and Serial data. From my understanding ...
0
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0answers
46 views

Transmit and Receive the data between Bluetooth adapter and RN42 - I/RM module

I'm trying to Sending and receiveing the data between bluetooth adapter(USB mini) and RN42 - I/RM module .The RN42 Bluetooth module is connected to Ardiuno DUE and the bluetooth adapter is ...
0
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0answers
67 views

Bluetooth low energy button press, minimal power consumption

I wish to have a button and light connected to a bluetooth low energy device, paired to an android app with simulated functionality. i.e: Physical button pressed => method is called on the phone ...
1
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0answers
56 views

Bluetooth BLE ILT254s

I want to understand a little how a BLE module works. I have the following module ilt254s(the small version) but until now I was unable to communicate with it. Here is the datasheet. I want to be able ...
3
votes
1answer
74 views

HC-05 and microcontrollers [closed]

I recently decided to add Bluetooth capabilities to a SNES controller using an HC-05 I had laying around. Unfortunately my knowledge of Bluetooth chips is very limited and I am having trouble finding ...
0
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0answers
57 views

bluetooth audio receiver pair name change error by onboard serial

My 1st question. I've got a cheap PT-810 bluetooth audio receiver whose chip is very clearly pictured at http://www.eevblog.com/forum/beginners/bluetooth-module-noise-issue/ My aim is to rename the ...
0
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0answers
31 views

BTM331 Bluetooth datasheet questions

I have some problems using BTM331 Bluetooth module. Here is the datasheet and the questions below: What is the purpose of the red pins "Host transport selection"? I want to use the RX and TX ...
1
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1answer
123 views

Is it legal to use a device's Bluetooth serial commands in one's project?

I'm currently making an android application that reads data from an hydrometer that sends it via Bluetooth serial. But when I connect to it, it doesn't send anything, probably expecting control ...
1
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1answer
47 views

How to avoid multipath noise

I have a device that broadcasts BLE advertisments, I am trying to measure the RSSI level of the broadcasts on another device (I am trying to do indoor triangulation for location estimation) When I ...
1
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0answers
37 views

Sparkfun Bluetooth Modem (RN41) Mode:entering pin

I'm trying to use the sparkfun bluetooth mate gold modem (microchip RN41) link in master mode to another BT modem in slave mode WITH pin authentication. However when I try to connect I receive the ...
0
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1answer
84 views

Bluetooth versus WiFi

Why there are two communication standards, Bluetooth and WIFI? Why not used just one, when they both works in the same 2.4 GHz band?
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2answers
183 views

Use UART to transmit data Pic16f628A

I'm attempting to use the USART Module in the PIC161F628A to communicate with a HC-06 bluetooth module. I've written my code in C in MPLAB X using XC8 compiler, however it doesn't seem to be working ...
1
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1answer
60 views

Bluetooth modules and profiles for audio

Few weeks ago I started designing a product that requires wireless connectivity, and more specifically Bluetooth audio. I need it to work "right out of the box" with the most popular mobile devices ...
4
votes
1answer
238 views

Before I build: will this circuit work, or have I overlooked something?

I'm an engineering student (ChemE), just starting to get in to electronics and electrical engineering. Next semester I'm planning on adding an electrical engineering minor, but I wanted to get some ...
0
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0answers
57 views

DSP, random glitches when resampling audio wave

I'm using a DSP for audio processing, I get an audio input via Bluetooth (a2dp) and I output the processed audio through an analog connector to a headset. The audio I receive from the Bluetooth ...
1
vote
1answer
56 views

Water immersion sensor

I have an object that I want to know whether it is submerged into water or not for a specific period(20 seconds for example). The object will float over the water most of the time but I want to be ...
0
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0answers
57 views

Device Discovery and distance measurement

The goal of my project is to discover devices with Wi-Fi or Bluetooth turned on (not connedcted anywhere) and measure the distance between those devices and my search devices. The search devices will ...