Questions tagged [bluetooth-low-energy]
For questions related to the use of a Bluetooth Low Energy (BLE) wireless personal area network in IoT devices.
20
questions with no upvoted or accepted answers
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Can a Bluetooth tag (iOS and Android) send a push notification without the device being connected to the internet?
I have several Bluetooth tags, model "Onyx Beacon One". They can be controlled via the company's CMS.
I can also switch them between Eddystone UID&URL and iBeacon. I can simply place two of them ...
- 299
4
votes
0
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98
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Devices wth Support for BLE Services 'Location and Speed' and 'Heartrate'
I need a BLE test device that supports at least
Location and Navigation (0x2A67) 1
Heart Rate (0x180D)
and optionally
Health Thermometer (0x1809)
Can anyone recommend one?
Edit: I'm not looking '...
- 179
2
votes
0
answers
146
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ESP32 transmit data over BLE VS Wifi
I am working on a project where I have got an ESP32 device (Wifi & Bluetooth), which reads data from some sensors, such as temperature and soil moisture (outdoor environment).
The data is then ...
- 121
2
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How to send data from BLE MCU to the Windows?
I have one nRF based 52840 device, which I am using to send the data by using BLE technology, my laptop has windows 10 and Bluetooth 4.0, which can detect the BLE but it cannot even connect to it.
I ...
- 21
2
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0
answers
835
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How to take data from multiple BLE devices into a central device simultaneously?
Firstly, I am very beginner in BLE domain. I have very little knowledge about it.
I have Adafruit Feather 32u4 Bluefruit LE module.
I want to do a project where multiple BLE peripheral devices ...
- 121
2
votes
0
answers
343
views
BLE advertising packet formation using nordic stack
I am working on A BLE beacon application to advertise data.
I am using nordic nrf52 Development kit and nordic sdk s132.
I am starting from the beacon exapmle provided by nordic.
My question is how is ...
- 105
2
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0
answers
298
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CRC-24 calculation method validation
I am working on a BLE Beacon application and to generate the packet to be advertised I need to calculate a 24-bits CRC value out of the BLE header, source access and the payload.
In the official ...
- 105
2
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0
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317
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AWS Greengrass Raspberry Pi scanning for Bluetooth LE
I have a AWS Greengrass setup where I would like to have a Raspberry Pi constantly scanning for BLE devices and if anything is found publish a message via MQTT.
I've gotten the script to work locally ...
- 121
2
votes
0
answers
349
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ESP32 & Bluetooth
I'm currently looking into how to set up a sense network made from ESP32s to track BLE tokens in an area, but I'm stuck at the first step... Getting Bluetooth & device listing to work on the ESP32,...
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1
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0
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114
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Integrating STM32 device with smart lock via BLE
I am using a Particle Boron to integrate with a Smart lock but I am not being able to do it. I'm using Particle's BLE interface to connect to Bluetooth and start sending messages to the lock, and a ...
- 111
1
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0
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206
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How to connect Raspberry PI 3 Model B to BLE Motion Sensor
I'm trying to connect my PIR motion sensor using gatttool and is giving me this error:
pi@raspberrypi:~ $ sudo gatttool -t random -b B8:7C6F:1A:D8:24 -I
[B8:7C6F:1A:D8:24][LE]> connect
Attempting ...
- 21
1
vote
0
answers
304
views
Push notifications to Mi Band 3
How can I push notifications to my Mi Band 3 without notifications showing up on my phone?
It could be code, or could be an app for Windows or Android.
I'm planning on writing an app using custom ...
1
vote
0
answers
59
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How Different is a Car's Bluetooth from phone Bluetooth
I'm developing an application which makes use of a car's Bluetooth but I need to identify if a certain Bluetooth device is a car's Bluetooth. Is there a way to differentiate between Bluetooth devices ...
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0
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How do I detect button presses from a ble device?
I've been working on an app in flutter that connects to a ble device and responds to button presses from the device. I've tried various packages and frameworks and none works. I decided to try nrf ...
0
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0
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22
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How to advertize BLE custom data in Linux
I'm learning BLE and slightly got stuck with advertisements. I'm trying to advertise custom data representing an iBeacon with the commands below:
bluetoothctl
menu advertise
manufacturer 0x4C 0x00 ...
- 101
0
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0
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14
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Why a requested/sniffed BLE characteristic handle mismatch on Linux?
I'm learning BLE and trying to sniff packets just to understand how communication happens. I do this with Wireshark on Linux and sniff traffic between the Linux machine and a BLE-powered wristband.
I ...
- 101
0
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0
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50
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Can you reconfigure advertising packet during advertising BLE on ESP32
I'm trying to make a simple environmental sensing module on the ESP32 with ESP-IDF. I want to use BLE with gap only. I'm thinking of sending all the received data with the Advertising packets but ...
0
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0
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64
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Choosing BLE beacons and gateways
I don’t get what is the difference between different beacons. For example, the Meeblue M52-SA costs 10 USD, approximately, and the Estimote Proximity beacon costs 25 USD. Both use Bluetooth 5, their ...
- 101
0
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0
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170
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What is the difference between a GATT Unit and a GATT Characteristic?
I am setting up an Arduino to collect temperature and pressure data, and I want to broadcast that data via bluetooth.
My question boils down to what allocated UUID is best for my characteristic, and I ...
0
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0
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77
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NINA B1 firmware update from 3.0.1.1 to 4.0.0
I try to update many time with no success.
I am having error in loading the NINA-B11X-BOOT3.0.1.zip using UART.
Any of you found a solution?
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