A low-power short-range wireless protocol.

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-3
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0answers
35 views

How to change the device name of a bluetooth chip CSR8635 that appears on device search? [on hold]

I came across a comment on youtube explaining the way of changing the name of a chip but it is just explained in general. Does anybody know in detail what should be done to change the name? The ...
-2
votes
0answers
25 views

Can Bluetooth Smart (BLE) receive data?

I know that BLE is designed to sending data from time to time, but I'm wonder if it also can receive data?
0
votes
0answers
28 views

Bluetooth Class 1 vs 2 and version 4.X

I know that bluetooth class 1 has a range of 100m vs class 2 with a range of 10m. For signal strength within 10m, is there a data-transfer or latency difference between class 1 and class 2 due to the ...
-3
votes
0answers
28 views

connect to multiple Bluetooth low energy devices (more than 10)

I’m working on a project where a PC is suppose to connect to multiple Bluetooth low energy devices (more than 10) at the same time and send information to each separately. is it possible to do that ...
0
votes
0answers
19 views

simultaneously communicate with multiple bluetooth modules using arduino Uno and HC-05

I want to make a project that in which my master HC-05 module can simultaneously communicate with its entire piconet(7 slave devices all HC-05). The problem is that i cant communicate with more then ...
1
vote
1answer
43 views

More energy efficient: writing in a SD card or transmitting by BLE for long period?

I need to store about 1 adc sample per second on a wireless project for about 10 hours. The problem is the energy. What is more efficient a constant transmission on BLE or writting each second on a SD ...
1
vote
1answer
48 views

Missing low frequency tones from bluetooth audio output

Currently I'm working on a project which uses a bluetooth module (Bluegiga WT32i) to get audiostreams from my iphone to a 3.5mm stereo jack input for a car AUX input. The problem now is that I have ...
-1
votes
1answer
42 views

Is there a programmable remote vibration motor? [closed]

I am a developer and loves to develop all kind of things for me to simplify my life. Now I'm looking for the possibility to wear a tiny device that receives signals from an app of mine to vibrate when ...
0
votes
0answers
17 views

nrf51822 uart example

I've buy a nrf51822 module with a motherboard. i struggling to programming an uart over bluetooth example but i think something missing. With nrfgo studio i have erased the device and program again ...
0
votes
0answers
25 views

BeagleBone Black wirelessly control a Relay Board

I'm a beginner in the field of Electronics. I'm trying to make a project where Beaglebone is used to control relays to operate a lamp, based on the output from a proximity sensor. The circuit works ...
0
votes
1answer
24 views

How come nRF51822 evaluation kit isn't recommended?

Looking at the nRF51822 Evaluation Kit's page, it explicitly states that it's not recommended and is replaced by nRF51 DK. Does anyone know in what ways the nRF51 DK is an improvement over the ...
0
votes
1answer
25 views

Bluetooth device spurious emissions test

I'm reading an outline of spurious emission test for Bluetooth devices which states that The Equipment Under Test (EUT), a Bluetooth module is switched to a test nullmode in which it ...
1
vote
1answer
42 views

Microcontroller Bluetooth Multiple Connection Support

What exactly is the bottleneck that might prevent a bluetooth device from being able to pair to more than one peripheral device at a time? Is it the connection, antenna, protocol, etc? I'm planning ...
0
votes
0answers
23 views

Pair two RN52 Bluetooth audio modules using single button

I'm doing a project that I wanted to connect two users through RN52 Bluetooth audio modules. both of users have mic and headset for the communication. I decided to user HSP Bluetooth profile for this. ...
3
votes
1answer
49 views

HCI UART ? what's the difference with simple UART?

For now, I'm sending bytes from FPGA (verilog) to serial at 115200 bps. I would like to send at higher speed and connect to a bluetooth module (RN42). UART (SPP or HCI) and USB (HCI only) data ...
1
vote
1answer
45 views

Audio amplifier car board

I have a old autoradio (cassette and not AUX input ) in my car. But i don't want change because it pretty. I just want to add bluetooth. I leave fm receiver side for the true audio / radio. I want to ...
0
votes
0answers
30 views

PC Cannot Access HC-06 Bluetooth COM Port

I have an HC-06 Bluetooth module connected to an Arduino UNO board to allow for the data received by the Ultrasonic sensor to be transferred to my PC via bluetooth and serial communication. I am using ...
0
votes
1answer
49 views

Beacon: dBm power decrease over distance

I have beacons which advertise their configured data periodically through Bluetooth. The vendor specifies 8 different power options 0 to 7: ...
0
votes
1answer
25 views

HC-06 bluetooth module working as slave device

When we say that the HC-06 is a slave bluetooth device it means that this device is connected to a Master bluetooth device. But i am a little confused regarding to the data transfer between Master and ...
0
votes
0answers
54 views

change device name of PT-810 bluetooth audio stick

I got a bluetooth audio receiver USB-stick and it identifies itself as PT-810. I want to change the device name of it. I read this two questions, so it is possible maybe. I want to interface this ...
1
vote
0answers
52 views

Bluetooth connection time

I am using a bluetooth module called HC-05 to connect to a bluetooth accelerometer (a China module called JY-901). For energy saving purposes I have to shut JY-901 down for thirty minutes and then ...
0
votes
1answer
40 views

How does bluetooth sniff mode work?

I wanted to know exactly how does bluetooth sniff mode work. Is this special mode going to affect data rates? Is it used in active transmissions or in idle mode? I am a bit confused.
0
votes
0answers
28 views

Bluetooth communication issue avr-pc

In the last few days I was messing around with avr <-> pc communication. Thanks to the help that I received here I managed to establish a good connection using pl2303 ttl-to-usb converter. Now, ...
1
vote
1answer
35 views

How do I make an electrical signal from a switch into an AVCRP signal to control audio player on my phone

This is my first post here so bear with me. Here is what I'm trying to do: I am making an audio box that receives a Bluetooth audio signal from a mobile device and can rewind or fast forward that ...
0
votes
0answers
55 views

LDO issue, BT powering

I am trying to test my board: I have 2 status pin on BT RN42 to see the connection. The behavior is: - LED2 is blinking every-time since power supply is switched on. - Both LED1 and LED2 are ...
3
votes
2answers
98 views

audio jack detection circuit

i want to build a bluetooth speaker with an additional audio-input jack. When the 3.5mm audio-plug is inserted, i want to switch off the bluetooth-module, so that i can switch between these two audio ...
-1
votes
1answer
84 views

Making a USB port transmit wirelessly via bluetooth

Background: I have an interactive board which I connect to my PC via usb. The usb connection of the board via pc is it's source of power. Any touch on the board is transmitted to the PC in the form ...
0
votes
1answer
115 views

Increase HM-10 Bluetooth range

I recently purchased this HM-10 board. I can connect to it and everything, so it works perfectly. I ran into a problem, the range is only around 7 feet. How can I increase the range? I need it to go ...
0
votes
0answers
27 views

High speed (EDR) data transfer possible with HC-05 bluetooth module?

From what I understand, the popular HC-05 bluetooth module is using a CSR BC417 controller part, which supports EDR for 2/3 Mbps modes, also up to 3Mbaud UART interface for the mcu. Assuming the mcu ...
0
votes
1answer
88 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
77 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
vote
1answer
48 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, ...
1
vote
1answer
200 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
votes
1answer
58 views

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

​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 ...
0
votes
0answers
58 views

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

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 ...
0
votes
0answers
105 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
votes
0answers
48 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 ...
0
votes
0answers
80 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 ...
0
votes
1answer
172 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 ...
0
votes
1answer
128 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
votes
5answers
104 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
vote
2answers
69 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
vote
1answer
38 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 ...
3
votes
1answer
89 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 ...
3
votes
2answers
48 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
vote
1answer
112 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
votes
1answer
43 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 ...
1
vote
0answers
272 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
82 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 ...
1
vote
2answers
138 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 ...