Questions tagged [bluetooth]

For questions pertaining to Bluetooth setup, usage and troubleshooting on the Raspberry Pi, whether onboard or via a USB dongle.

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6 views

Bluetooth and wifi settings not working correctly

I'm working on a project regaring a Raspberry Pi 3 B+ The Raspberry have to work as a bluetooth-speaker with a HifiBerry Amp2 hat on top. The bluetooth have to be open and possible to connect with any ...
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22 views

Is there a relatively cheap accelerometer that I can wirelessly connect to a raspberry pi 3

I’m interested in building a wristband that turns on a light when the wearer of the wristband makes a sharp movement. I am thinking of connecting a wireless accelerometer to a raspberry pi 3 that I ...
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34 views

Is RaspberryPi powerful enough to act as a node of a mesh network?

Background to the question There are currently protests happening in Hong Kong. Shutting down the internet and communication is a common technique employed by the government. 2011 in Egypt: https://...
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21 views

Is it Possible to Access a Smartphone's Bluetooth from the Browser?

I'm pretty sure the answer is "no" but am posing this question in case I've missed some recent tech. I know native apps can use device bluetooth on both iOS and Android, is there a way to do the same ...
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9 views

obexd - Receive files error

I am facing the below error while trying to receive files via bluetooth. The pairing is successful and sending files from the board to the phone is also successful. But receiving files from phone to ...
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32 views

HC-05 and Raspberry Pi 3 automatic connection

I have sensors which connected to arduino. I would like to send data to raspberry via bluetooth. I make a following steps: sudo bluetoothctl power on agent on default-agent pair XX:XX:XX:XX:XX ...
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13 views

bluetoothctl hangs with “connect to bluetoothd”

I have a Raspberry Pi 3 and I have been playing with the bluetooth functionality. It worked for a while: I successfully paired a Windows machine with my Pi, but now it does not work anymore. I used ...
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22 views

How to trigger iOS/Android Camera through Raspberry Pi Bluetooth?

For my current project I want to connect a raspberry pi to an android/iOS phone and trigger the camera without any additional app on the phone. I know that this is theoretical possible, as there are ...
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23 views

Send command (start/stop) wirelessly to a DC motor from raspberry pi3

I know we can connect a dc motor with GPIO pins and star/stop/control speed etc. of it. Is there any way to control that motor wirelessly(over wifi/bluetooth) from raspberry pi? Raspberry pi in one ...
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33 views

Two Bluetooth headphones connected to the RPi 4 B at the same time?

Has anybody successfully connected two Bluetooth headphones to the RPi 4 at the same time? What profiles does it support?
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36 views

Wifi Speakers like bluetooth speakers using raspberry pi 3b+

So basically I was able to use my raspberry pi as a bluetooth audio out device that is, connecting a speaker via audio jack I'm able to make it a Bluetooth speaker. I'm wondering if there's a specific ...
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49 views

bluetoothctl in debian 10 pairing poblem

When I try to pair my RPI Bluetooth with some other Bluetooth it pairs some time and then it is dis-pairing by itself. How can I fix this problem? My OS is Raspbian 10 buster and the version of Bluez ...
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26 views

Can the Raspberry Pi Zero W receive data from multiple Bluetooth Low Energy peripherals simultaneously?

Does the Bluetooth radio on the Raspberry Pi Zero W v1.3 allow it to receive data from multiple Bluetooth Low Energy peripherals simultaneously?
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60 views

Alsa Lib PyAudio error on Raspberry Pi 3b+

I was looking at an old question that gave advice for fixing these errors: ALSA lib pcm_dmix.c:1052:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown ...
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1answer
31 views

Using RPi Zero W as Bluetooth smart device

I'm trying to setup my RPi Zero W as a Terrarium Controller and I want to be able to create an Android app to control the settings and and such over Bluetooth. I've found tons of tutorials on setting ...
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41 views

Internet Through USB

Is it possible to get an internet connection for a Rasberry pi zero from a USB connected to a Win 10 pc? or is it possible to connect to a Bluetooth wifi Hotspot without an OS on a Rasberry Pi Zero?
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2answers
25 views

How to enable BlueTooth when TX/RX already being used

We have the TX/RX Gpio already being used on the Raspberry Pi 3B+ . I believe the onboard Bluetooth uses the same ? How can I get bluetooth working when our TX/RX is already being used. Right now I'...
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49 views

Sudden influx of “frame reassembly failed” messages after Raspbian update

Problem Looking in /var/log/syslog, I see a lot of messages like this: Bluetooth: hci0: Frame reassembly failed (-84) Here's a recent segment from the logs: Jul 9 02:23:34 apple-pi kernel: [ 3268....
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1answer
31 views

How to get song information using PulseAudio?

I want to have a script that is continuously running in the background while I connect my phone via Bluetooth to play music. I need the script to get the total time length of the track, the current ...
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61 views

Integrated Bluetooth on my RPi 3 is not working!

So, basically I am connecting a Bluetooth earpiece to my RPi 3.B The problem started when I typed the following in the terminal sudo bluetoothctl the following output came ""Waiting to connect to ...
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1answer
31 views

Is there a way to see if bluetooth scanning/advertising are running?

I have made a python script based on this github in order to use ble scanning/advertising. This script will run a long time and the Bluetooth thread might have a problem which caused them to stop. I ...
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13 views

How to access bluetooth controller on `/dev/input/js0` as user/group?

I'm working on an application that is reading an XBox controller connected via bluetooth. After configuring it (see https://pimylifeup.com/xbox-controllers-raspberry-pi/), I noticed that only root has ...
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18 views

Is it possible to bluetooth packet using onboard in Raspberry Pi?

I'm trying to sniff bluetooth packet of nearby smartphone. There are plenty of guides, but they just show the number of bluetooth devices like this: Scanning for BLE devices (5s) ... Found 2 BLE ...
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24 views

Maximizing the number of active BLE/Bluetooth connections

I would like to connect around 30 smartphones via BLE to a Raspberry PI enabled system, however, googling around showed that it supports up to 5-7 active connections only. It is expected these 30 ...
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30 views

Bluetooth connection between Raspberry pi and BT speaker falls

I have Raspberry pi 3B+ and bluetooth speaker Beats Pill+. Using alsa I am transferring audio from rpi to speaker. It works well but after few minutes bluetooth connection falls down. Using dmesg logs ...
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1answer
50 views

Bluetooth discoverable mode is automatically turned OFF

I want to set up the Bluetooth on boot so I can connect to it whenever I want with a device which is not trusted by the Raspberry Pi Bluetooth. I set up the Bluetooth on boot on my Raspberry Pi this ...
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1answer
83 views

Mini UART Bluetooth PAN on Pi Zero W

I followed these instructions to enable a Bluetooth PAN on my Raspberry Pi Zero W. It mostly works fine, but it occupies a serial port. I need UART (mounted at /dev/ttyAMA0) for serial communications, ...
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2answers
55 views

Raspberry pi 3B+ and Beats Pill+ bluetooth speaker

I have Raspberry pi 3B+ and bluetooth speaker Beats Pill+. I am trying to forward all audio to this speaker and use it as default. Bluetooth connection between rpi and speaker is not a problem, using ...
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30 views

Configure AlexaPi to use bluetooth speaker connected to my Raspberry Pi 3B+

I am trying to clone Alexa on my RaspberryPi 3B+. Following are the links which I am following. https://github.com/alexa-pi/AlexaPi https://github.com/alexa-pi/AlexaPi/wiki/Installation I have done ...
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12 views

Caputing data from BluetoothLE sensors

I have been trying to grab data from BLE sensors using python. While the commandline tools worked flawlessly I couldn't get it to work with any other python framwork available for BLE. A collegue ...
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10 views

Displaying specific information from Raspberry Pi to a bluetooth display

I have a project on Raspberry Pi and I want to display angle variation recorded from sensors connected to RPi but the display must be connected via Bluetooth. Is this possible?
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23 views

How do I change my Pi's bluetooth profile for it to show up as a bluetooth device not an audio device?

I want to give the pi a profile such that I can send and receive messages from it. However, in the list of bluetooth devices, it is showing up as an media device.
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35 views

calculating the distance between BLE of RPI3

most accurate equation or algorithm to find distance between tow Bluetooth low energy (BLE) of Rpi 3 with python code?
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1answer
92 views

bluez - failure to pair bluetooth remote

I'm trying to pair my PS3 remote with my RPi 3, through bluetoothctl. The steps I'm attempting: place the remote in pair mode run bluetoothctl [bluetooth]# devices Device 00:19:C1:5A:24:7B BD Remote ...
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29 views

Bluez Android/iOS control

Hey guys I created bluetooth speaker from my Pi Zero W. Everything works as I want. I implemented my own absolute volume control using d-bus which work as needed. Connection from Iphone work perfectly ...
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61 views

Develop a communicattion between a Raspberry with BLE server and a Raspberry with BLE client

I have been developing an small project which requieres a communication between two Raspberries, the first one acts as a Beacon and the second one tries to connect to that beacon and obtain the RSSI ...
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28 views

How to connect to Android to Raspberry Pi through Bluetooth

I have been trying to connect my Raspberry Pi B+ with my phone through Bluetooth, my Android phone is also paired with the Pi but couldn't connect. I also tried to connect from terminal using ...
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1answer
61 views

Running sudo rfcomm watch hci0 during startup

To connect to the RPi3 through the Bluetooth Terminal App, I have to run this command first: sudo rfcomm watch hci0 How to execute this command automatically during startup of the Rpi? I found this ...
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11 views

Confused about btpan python script

This has been done in Raspberry pi 3b in Raspbian Stretch. The goal was to setup a PAN between two raspberry pi. I have followed this tutorial for the command bt-pan server pan0. However I had a few ...
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20 views

Can't get bluetooth headphone mic working with pi

I am trying to get my Bluetooth headphone mic working with pi b+, my headphone gets connected and audio output is also working but its mic isn't working with pi. I had gone through several online ...
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41 views

Raspberry pi 3: is not ready to pair -BLUETOOTH

I need to connect my android phone to my pi3 via bluetooth and with a PIN. I am using blueZ4.0.1 https://github.com/pauloborges/bluez/blob/master/test/simple-agent this is what I did: on my terminal, ...
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1answer
45 views

Raspberry pi 3 model b warranty in Pakistan [closed]

This is Ayesha from Pakistan, I'm an Engineer and I always use Raspberry pi 3 model b here in Pakistan for my projects. It has been 1 hour that I'm searching and reading here my concern topic but I ...
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1answer
291 views

Connection failed between raspberry pi zero w and android via bluetooth LE

I'm trying to connect my rpi0 w to any android device via Bluetooth LE(low energy) , i can pair but i can't connect them ,an error always showed (Connection failed,No usable services on this device ) ...
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1answer
49 views

Run many scripts with different commands from bluetooth [closed]

I have 3 scripts and I want them to be listening to a bluetooth command. When the Raspberry receive a command from the bluetooth, one of the three scripts must run. For example if the Raspb recieve ...
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147 views

How to send/receive command via Bluetooth using Raspberry Pi 3 B+?

I want to connect my raspberry pi 3 b+ to a smartphone via bluetooth connection. By this connection, I want to receive command from the smartphone to start running codes on my raspberry pi. Can you ...
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26 views

Wireless and bluetooth suddenly stopped working

My raspberry pi zero w was lying useless since a year because the wireless and bluetooth interfaces were not showing up.I thought it was a hardware problem but this year after the April release of ...
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12 views

Trigger Volume Up key press in Android with Bluetooth in Node.js

I'm making an app in Node.js and I need to make a remote shutter for Android's camera via Bluetooth. I'm using Bleno/Noble libraries to achieve Bluetooth connection. As far as I know, selfie sticks ...
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1answer
45 views

bluetooth transfer speed 10x slower than wifi

I run a mqtt server on raspberry pi 3B together with a mqtt client on android handset. A data sequence will be transferred from the server to the client by TCP. I enabled ip over bluetooth on ...
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1answer
44 views

How to send data from raspberry pi to AVR over bluetooth?

I am searching for a way to send data from raspberry pi to my AVR using HM10 or HC05, both of which are available. What I need to do is to read values from a .txt file and send it from the raspberry ...
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35 views

Get input from bluetooth with Node js

I want to use a raspberry pi 3B+ with node js to create a simple number counter that will be incremented by pressing a bluetooth button. I need a suggestion on the button to buy, and if it is possible ...