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Questions tagged [bluetooth]

A low-power short-range wireless protocol.

1
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4answers
68 views

P-Channel MOSFET Flipped on Schematic

I'm designing a circuit which has a bluefruit nrf52832 micro controller built into it. When referencing the schematic provided by Adafruit I noticed that they had +VBAT going to the drain of the p-...
0
votes
0answers
74 views

Need help getting started on my first project - Flexible PCB circuit routing [closed]

I am new to electrical engineering so I am trying to explain my project in simple words - please excuse wrong terms, etc. :) The software part is less an issue for me because I know how to write code ...
0
votes
1answer
71 views

Identify these components for bluetooth speaker [closed]

I am wanting to make my own DIY bluetooth speaker (first time electronics project) and I have found several good Youtube videos on the topic. However when it comes to finding the actual parts, I am ...
-1
votes
1answer
32 views

How to control two bluetooth device with one master? [closed]

I'm trying to understand how bluetooth pairing works in devices like Airpods or other similar devices that comes in pair but are not connected physically. From my understanding a bluetooth devices ...
0
votes
1answer
23 views

Connecting multiple HC-06 bluetooth modules to multiple smartphones at the same time

So I'm having a "robotics" workshop for kids and we are going to control 6 robots with bluetooth modules. They run on Arduino. I tested the code before class and it worked as expected. I also changed ...
-1
votes
1answer
24 views

Pairing vs Master-slave between BT Module to BT Module

If I take two identical BT modules, for example HC05 or HC06 then is it possible to pair the two modules with each other or is it like you need 1 master and 1 slave module for pairing? Edit: Now I ...
3
votes
0answers
42 views

Bluetooth speaker works only when aux is plugged in [closed]

Plot Recently got this Bluetooth/FM speaker with a built-in microphone from my friend to try repairing it. He said that it's battery was swollen up so he dumped the battery and never used the speaker ...
-1
votes
1answer
62 views

Bluetooth vs BT Beacon [closed]

While trying to understand how BT devices work I came across another related term "BT Beacon". Is it same as BT communication or if a device is termed as BT beacon then it would have some specific ...
0
votes
1answer
37 views

Data transmission from bluetooth module to fpga

I am using an android app which is taking a string and converting it to its ascii values and sending it to bluetooth module hc-05. Now i need to send this data to an UART receiver in an fpga. In what ...
0
votes
1answer
36 views

Using ESP32 as a2dp sink and access point at the same time

I am trying to make a project where bluetooth and wifi collaborate with each other. Precisely I want to use the a2dp profile to stream the music to one esp, from there via UDP sockets to N esp's. I ...
1
vote
0answers
70 views

How can I estimate the minimum baudrate for a given bitrate?

My circuit performs data acquisition at 250 samples/s, 24 bits/sample and transmit this information to the local host (PC) through a bluetooth module that implements the UART protocol. As far as I ...
-2
votes
1answer
16 views

Bluetooth Application File-Sharing [closed]

Is it a practical application to use Bluetooth for file sharing? And is Bluetooth Mesh optimized for this application?
2
votes
1answer
21 views

Bluetooth Mesh and Bluetooth Broadcasting

I have been reading up about Bluetooth recently and I just want to know if it is correct to say that all Bluetooth 5.0 have the broadcasting feature? Is that the broadcasting feature also found in ...
0
votes
0answers
23 views

How to convert device that uses OTG to communicate with Android device to Bluetooth?

We currently have a piece of hardware that uses an OTG cable to communicate with an Android application. We are currently using USB Host to communicate with the Android device, but we hope to offer a ...
1
vote
2answers
85 views

How to choose the correct ARM chip and understanding the pins at a more intuitive level?

I'm just starting out my journey developing my own board and need some advice how to get started and understand a few things in better context. I will ask my first question first and provide the ...
1
vote
0answers
18 views

Can I set one relative axis and one absolute axis in a mouse HID descriptor?

I'm building a custom Bluetooth mouse using an ESP32 with a proximity sensor for the Y coordinates and a gyroscope for the X coordinates and was wondering if setting the X axis as relative and Y axis ...
0
votes
1answer
26 views

HC05 Bluetooth Ping without losing connection

I am currently working with the Bluetooth module HC05 using a Teensy 3.2 board. I successfully established a connection between the laptop and the board using Bluetooth. I can send data from the board ...
2
votes
1answer
84 views

Bluetooth low energy paired vs unpaired communication

I am looking to seamlessly connect multiple slaves to one bluetooth low energy master, however I do not want to go through the process of pairing each individual device. The pairing process takes too ...
0
votes
2answers
87 views

RF communication vs Bluetooth [closed]

I'm starting a new project in my Electrical Engineering degree at my university and I need help. Overall, my project is about a mini robot that collects data and sends it (via wireless communication) ...
0
votes
0answers
22 views

Bluetooth sensor on sports field - multiple antennas

I am creating a tracking project for lacrosse sticks that uses an IMU to give the absolute position of the stick. The goal is to use it to guess the speed of the ball shot, and I will use that as a ...
0
votes
0answers
13 views

Frequency of HID reports using RN-42

I'm currently trying to connect a PS1 controller to my laptop through Bluetooth. My current setup is an Arduino Uno interfacing with the PS1 controller, which I managed to do using this guide. After ...
1
vote
0answers
44 views

How does specific apps find “hidden” Bluetooth devices?

Segway has made an electric scooter. It has Bluetooth so I can connect my phone to it. When I open the app, it asks me if I want to scan for devices. I hit yes and my scooter comes up. I can then see ...
0
votes
0answers
35 views

Wifi versus Zigbee versus Bluetooth for real-time data sampling

I am working on a project that I would like to send and receive data between a microcontroller (ESP32) and a PC. The microcontroller supports both Wifi and Bluetooth. If I send one single data point (...
0
votes
0answers
46 views

Vertical distance from PCB antenna layer to ground plane?

I know the basic design requirements for pcb trace antenna, no ground place below or above the traces, impedance matching etc. But the design layout recommendations for pcb antenna doesn't seems to ...
0
votes
0answers
35 views

Diy Bluetooth speaker antenna

I am building a Bluetooth speaker with a 50watt Bluetooth amplifier board which has a pcb antenna,I would like to get around 150to 200 feet range line of sight, what type of antenna would be best for ...
0
votes
1answer
81 views

How to remove noise from microphone input?

The Issue I've made a project centred around the XS3868 module which is based on OVC3860. The circuit works fine and I was able to get the microphone to work except for just one thing, the mic input ...
0
votes
0answers
33 views

Bluetooth RSSI to Distance [duplicate]

I'm trying to find the distance between two bluetooth beacons which are typically in the distance of 60cm or less. Direction is not an issue, I'm only looking to figure out the distance between the ...
0
votes
0answers
29 views

Static noise on a TDA7492 Bluetooth sound amplifier board?

I have a KKmoon TDA7492 bluetooth sound amplifier board with an AUX interface (https://www.amazon.co.uk/gp/product/B075QZ19VJ/ref=ask_ql_qh_dp_hza). The issue I have is that whenever I connect ...
5
votes
1answer
87 views

What makes Bluetooth v5.0 completely better than v4.2?

I read documents about Bluetooth 5.0 and one of my first sign is, v5 has longer range, higher speed and also consuming lower power than v4.2 . Actually these features should affect each other by ...
0
votes
1answer
29 views

How to link 3 RF transceivers to 1 antenna

I'm not an RF designer, so excuse the newbie question: How would I link three transceivers, say WiFi and two separate bluetooth transceivers, to a single antenna. I have found a 3-way combiner ...
0
votes
1answer
119 views

HM-10 Bluetooth: How to read characteristic data via serial commands

I'm programming an Arduino to use an HM-10 BLE device in Central mode to read a BLE Peripheral. I'm able to discover and establish a connection with the Peripheral (via AT+CONnnnnnnnnnnnn command) ...
2
votes
0answers
50 views

How to connect a MEMS Microphone Breakout - INMP401 to a RN-52 bluetooth module?

I intended to use a INMP401 (MEMS MIC) to capture audio and stream it via bluetooth using an RN-52 bluetooth module (RN-52). The RN-52 has inputs for differential +- signals. The INMP outputs ...
1
vote
0answers
30 views

RN4871 auto pairing

We are developing an application which needs the BLE Peripheral to be automatically paired with the smartphone when the smartphone is near the BLE Peripheral. We are using RN4871 Microchip BLE Board. ...
1
vote
1answer
51 views

Using a Bluetooth receiver with 3.5mm jack headset [closed]

For the past 1/2 year I have been using a cordless Bluetooth headset (this one) connected with my motorcycle Garmin GPS device. While connected the device will not allow me to control the volume over ...
0
votes
1answer
50 views

Wiring a bluetooth module into car radio, issue with switching between radio and bluetooth [closed]

I have an old Blaupunkt Radio in my 91 VW golf. I have purchased a Bluetooth module from eBay and I have wired the line out from this into the Left and Right inputs to the amplifier that would ...
0
votes
0answers
54 views

Can I programming Bluetooth module internal registers through UART?

I have a customized Amicomm A8107 Bluetooth System-in-package (SiP) module for a project in a PCB with a STM32F103Z micro-controller. I have 5 connections between my microcontroller and the BT module: ...
0
votes
0answers
34 views

Did anyone managed to use 48kHz sample rate on chinese CSR64215 modules?

I have several chinese CSR64215 modules (BTM625) and it seems no one of them is able to work on 48kHz sample rate. Did anyone managed to use 48kHz on these modules? I tried to use different sound ...
0
votes
1answer
58 views

Bluetooth receiver combining differential outputs to single ended (LR, N) to one (main) secondary amplifier

Hello I am new to this forum recently purchased a CSR8645 Bluetooth Module I have a Sony MHC GX Music system with AUX/MD Video Audio input (Left Right Ground). But in my CSR8645 ...
0
votes
1answer
40 views

Microchip IS1678S Questions - wanting to implement SPP as simply as possible

I'm looking for a solution to implement Blutooth Classic SPP on a chipset. What I'd like is everything to be on an external chip, so I don't have to run any sort of Bluetooth stack on my STM32 which ...
0
votes
1answer
38 views

Can I make my cellphone a 3.5mm jack bluetooth transceiver? [closed]

I want to hear sound from my TV using my Beats Solo3 wireless headphones the problem is that the TV doesn't have a bluetooth transmitter (or any wireless connectivity) it has USB and 3.5mm headphone ...
0
votes
0answers
34 views

How to solder a trrs 2.5 cable to an old charger

I need to solder a trrs 2.5 cable to an old nokia charger, so I can charge my JBL E40BT headphones. My problem is I got the cable from an old set of earbuds, and I don't know what cable goes welded ...
0
votes
2answers
56 views

connecting pam8403 and bluethooth module in series

I am new to this so I apologize in advance for any rookie mistakes. I decided to make a portable Bluetooth speaker. I have a pam8403 and a Bluetooth module: Both of them require 5 V input. Can I ...
1
vote
2answers
91 views

What bluetooth chip should be purchased to solder onto the Nook motherboard? [closed]

From what I researched the e-reader's motherboard contains three unused serial ports that can be connected from gps modules to bluetooth chips. U2713 PIN OUT CLOSEUP The article that gives ...
0
votes
0answers
40 views

custom PCB with brd4306A radio board and bgm13p22512GA soc is slower than Silicon labs starter kit

I am using a custom PCB board with brd4306A radio board and bgm13p22512GA soc(both from Silico Labs) on it. It talks to a windows app via BLE(Bluetooth Low energy). I am also testing this ...
0
votes
1answer
50 views

Bluetooth Concurrent connection

I have multiple sensors that sends data via bluetooth to my laptop. At present, I can only connect one bluetooth sensor with the bluetooth of my laptop. It needs pairing, and then connects. So if I ...
0
votes
2answers
135 views

Planned obsolescence / failure of consumer electronics / kill switch [closed]

General question for those who have worked in the consumer electronics industry: Are small rechargeable devices (like bluetooth audio devices specifically) designed to fail after a set time to force ...
3
votes
1answer
89 views

What are AT commands ? When to use them?

I read some articles about the AT commands but I am still unable to understand something. As the article says "AT commands are instructions used to control a modem." I used a while ago an Bluetooth ...
0
votes
0answers
23 views

How to listen to beacons(broadcaster) using the simple_observer example?

I am using the TICC2640 for this purpose. I am trying to use the simple_observer example from the SDK to listen to beacons. I am able to scan the devices and print their MAC addresses. I am ...
0
votes
1answer
137 views

How to send notification via bluetooth device [closed]

I am running a Grocerry shop, I want to send offer notification via bluetooth to all my customer who enters my shop. If a customer comes within a range of 10 meter near cash counter auto offer ...
0
votes
1answer
45 views

Different I/O pins of same PORT of ATMEGA8 not providing exact output [closed]

I have written code to switch ON/OFF some LED light connected different I/O pins of same PORT (i.e PORTD) of atmega8 microcontroller. This process is performed using android app by sending different ...