Questions tagged [bluetooth]
For questions about the use of the Bluetooth protocol and its uses in devices. Use [bluetooth-low-energy] for questions specifically about the low power version.
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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 ...
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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 ...
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Connect esp32 hardware to mobile app (Xamarin.Forms)
I'm designing some SmartLED controller (hardware/server) which can turn on/off some LED strips and do some nice effects etc. and it works on ESP32 chip.
Now, I was starting to write Xamarin.Forms ...
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Using Xiaomi Mi Band for a Indoor Navigation System
I have to use a Xiaomi Mi band 6 for receiving the BLE signal strength from some beacons deployed in a room in order to track user's position. My initial plan was to develop a wearable App that ...
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Digital door lock standard protocol
What's the standard protocol used by digital door locks that are managed through Bluetooth devices? Like Android and iOS devices.
While digital locks and Epic works with Android app like KeyWe little ...
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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 ...
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66
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LoRa inventory application
As far as I know there is no smartphone with Lora builtin compatibility.
I'm looking if I can build a inventory solution based on LoRa.
Until today the solution was to use the NarrowBand (deprecated ...
- 121
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522
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How to do directional finding with Bluetooth and UWB
Just jumped into the ocean of IoT and found myself drowning....
I am trying to make my small toy car(with remote) being able to follow me.
Have discussed with my hardware friend and was told to get
...
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217
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BLE Sensor Gateway & RaspPi Project
Goal:
To build a gateway using a RaspPi 4 which will receive the BLE data from the sensor and be able to see this on my mobile remotely anywhere.
Sensor:
Temperature & Humidity BLE (T201), you use ...
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2
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126
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BLE client server communication
This is probably asked several times before, but my websearch skills can't really direct me to an adequate answer.
I have a thingy, that takes commands from a mobile application with a request-...
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Avoid keyboard interaction by passing WiFi credentials through phone via bluetooth
We're designing an IoT device that needs to connect to wifi, but the screen is too small for a keyboard. Can wifi credentials be passed via bluetooth to the IoT device from an iPhone or Android?
Would ...
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Low Bluetooth antenna problem on my PCB (Sim800c)
I have my PCB that I have SIM800c module with Bluetooth V3. My module GSM is working perfectly but my BT has just a few centimeters board (I have tried 3 different modules after upgrading their ...
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167
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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 ...
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641
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How to change/add characteristics on HM-10? [closed]
I have been reading about the UUID on the HM-10 and multiple sources say that "The main part of the user UUID service (FFE0) and the main part of the custom characteristic can be changed using ...
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121
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OOB pairing without NFC
I'm building a medical device with NFC capability. This medical device can be connected to a mobile phone/tablet over Bluetooth and operated by an App.
During the pairing process, the App asks the ...
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1
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56
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Bluetooth Input Hub
I am wondering if anyone knows about some existing 'off the shelf" hardware options where some device could connect to this Bluetooth "Input Hub" where this hub can have inputs plugged into it and any ...
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Please ensure your device has a proper internet connection
I have been using the 1st. Gen Kevo for almost 3 years now and was working perfect until last week that stop working with all of our phones (1 iOS and 2 Android) I tried to reset the lock and from ...
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How to transfer data over bluetooth between ESP32 and Android?
I have trying to find examples for codes to exchange data over bluetooth between esp32 devkit module and an Android device. I want to use SDP to broadcast a service and then make my Android app ...
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816
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CSR8675 programming and build
I've bought myself a simple CSR8675 board with USB-SPI programmer, without any software included. I've succesfully managed to read and edit some settings using PSTool, but what i really need is to set ...
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841
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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 ...
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1
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RFID Specifications and Project Recommendations [closed]
I'm very new (one day) to the IoT world. I've got a specific project I want to tackle, as a intro to IoT, but I'm also open to general advice on getting started. In summary, I want to know if my ...
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305
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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 ...
2
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1
answer
1k
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Stream real time data from smart band/watch to computer via Bluetooth
Description: I have a smart wrist band (link to Amazon) which has Bluetooth connectivity.
My goal is to read real time on my computer (running Ubuntu 18.04) some of the data that is tracked by the ...
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Zigbee or Bluetooth for turning router on and off? [closed]
I want to be able to turn my wifi router on and off with a smart plug. What would be the best way to achieve that? Have one special plug which is zigbee (or is Bluetooth better for this?) which only ...
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Measure strip bending
I though of a bluetooth strip device, that would tell me the value of the angle and direction in 3D. I tried to search for one, but did not found anything.
The only idea I've got so far is to set up ...
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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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2
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1k
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Raspberry Pi emulate phone Bluetooth stack
I'd like to use my Raspberry Pi to emulate phone Bluetooth stack. I'd like to get it paired with car radio, simulate arriving/outgoing call, simulate SMS and the more alerts/notifications I can manage....
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LPWAN technologies and Dash7
I need to transfer messages from node to gateway that would be at most 2km apart.
I am currently working with 40 nodes that wake up every 1 minute. So I would like to have battery life of at least 3-...
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3
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2k
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DIY smart button to trigger phone app
I am planning on making a button that is when pressed sets an alarm on my phone. I am planning on making an app that is creating the actual alarm, the app just have to be triggered by the hardware ...
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1
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How can I detect the presence of a Xiaomi Mi Band 3 (which uses BlueTooth)?
As you can see from my question on h/w recommendations, I am trying to design an evacuation system for a chemical factory.
That requires knowing which room each employee is in at any given time. I ...
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Why does echo dot audio play through my laptop after bluetooth pairing?
I am trying to use echo dot as a bluetooth speaker for my laptop (Fujitsu Lifebook - win7). In the bluetooth devices windows on the laptop I can see and pair with the echo dot, but after pairing I can ...
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Scanning for Device
What kind of technology does the Google Home and Amazon Echo/Dot use when you set up the device for the first time and their respective apps "scan for device" before they're connected to Wifi?
I'm ...
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184
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Control GPIO of ESP32 using Bluetooth [closed]
I’m using ESP32 to control relays using MQTT ( both over Arduino and MicroPython ).
For special cases, and not for everyday operation, I wish to control a specific GPIO over Bluetooth ( a reset irq)....
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Choosing a microcontroller for IoT project
I'm currently working on an IoT project. The principle is to have a box that could connect to a phone over Bluetooth on some NFC contact. After the phone and the box will communicate messages over ...
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Does an Internet of Things device need to directly connect to the Internet, or can they use alternative protocols like Bluetooth or ZigBee?
Can a device be considered an "IoT Device" if it uses protocols such as Bluetooth and ZigBee which are not directly connected to the internet? I've been reading about smart devices and connected ...
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Is there an IoT device which has Bluetooth, GPS, a USB port and which can support a module for an alarm?
I'm looking for an IoT device which has Bluetooth, GPS, a USB port and which can support a module for an alarm. The end product is a wearable device therefore the device should be small.
It should be ...
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Bluetooth heart rate/blood pressure monitor
I am trying to find a wristband type device that will measure heart rate and blood pressure and transmit using Bluetooth to a PC. There are many devices, but all talk to a smart phone.
But, I want ...
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Ultra Low Energy point-to-point protocol choice
I am lost in a forest of IoT protocols and need help. I'm looking for right hardware and protocol for my application. I would like to make a device of my own, but use an existing stack and hopefully ...
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How do I disable phone ringing from my Tile?
When a Tile tracker is paired with a phone, double tapping a button on the Tile will make the phone ring. This happens even if the phone is on silent mode. I’ve accidentally rung my iPhone at work ...
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How can I pair the Tile to the phone?
Setup:
Put Tile tracking card in
shoe. It has a one year charge.
Charge Jelly Pro phone each night.
Put phone in coat pocket each morning.
Provide these features:
Track phone if he is not at home ...
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7
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3
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4k
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Setting a device clock with BLE
I'd like to build a device that obtains the local time from a phone or laptop via BLE. My ideal interaction flow would be:
push a "set time" button on the device to make it start advertising
open ...
- 71
8
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1
answer
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IoT Setup: Bluetooth Sensor -> IoT Gateway -> IoT Platform
I want to get started implementing IoT stuff. I do not have experience with it so far, but am learning fast.
I am imagining my setup as follows:
Proposed Setup
Different wireless sensors (...
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Protocol for over 300 metres and minimum of 20 kbytes datarate?
We are trying to choose the most suitable connection protocol for wearable devices, with the following constraints:
300 - 500 devices will simultaneously connect
About 1 km2 site area—coverage is ...
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FitBit integration with Alexa; Play music when waking up
I m trying to integrate my Fitbit with my Amazon Echo. My goal is to make my Echo play music when I wake up in the morning. Is it possible to send a notification (or alert) via Bluetooth to my phone ...
GMedi
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2
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626
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Device for a motion tracker with BLE/Wi-Fi
I would like to know best alternatives to an Arduino or Raspberry Pi that has to satisfy the following specifications:
Has BLE (Bluetooth low energy).
Small size (https://www.kickstarter.com/projects/...
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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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4
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146
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Motion sensor to monitor the movement of people
I'm about to start an investigation about people movement after a surgery (walk basically). I would like to know where should I start to look for movement sensors (pedometer/accelerometer). This ...
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What is the difference between beacon products [closed]
What is the difference between different beacon products from different companies? I want to develop iBeacon products, but haven't decided yet which to use. It seems to me though they are quite ...
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How to secure a Samsung Smart Refrigerator against BlueBorne?
Armis Labs lately revealed a new attack vector that attacks essentially all major OS including those used on IoT devices via Bluetooth. BlueBorne is reported to spread malware laterally to adjacent ...
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Sensors Communicating With the Pi, BLE / Wifi
I want to place a Pi 3 somewhere in my house and battery powered sensors. The Pi will read the inputs from e.g. the same level, one level above and the garden. So 1-2 regular brick walls in between ...
Andi Giga