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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26
votes
5answers
2k views

When to use Wi-Fi over Bluetooth or vice versa in an IoT system?

Basically when it comes to IoT, the two main communication methods which come to my mind are either Bluetooth or Wi-Fi. I know that there are others as well like ZigBee, Z-Wave but I would like to ...
18
votes
2answers
2k views

How do I secure communication between app and IoT device?

I am currently working on a project that includes Bluetooth communication between a mobile application (currently using the Ionic platform) and an embedded device. For comparison, our product is ...
14
votes
3answers
822 views

Is Bluetooth 3.0 suitable for a single-master multiple-slave network?

I have a data logger board with a SIM808 on it. It has Bluetooth 3.0 capability by the SIM808. The board itself implements a battery management system, capable of performing weight, humidity and ...
10
votes
1answer
13k views

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 ...
10
votes
1answer
149 views

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 ...
9
votes
1answer
193 views

Does CoAP depend on IEEE 802.15.4?

In the CoAP specification, it is implied that IEEE 802.15.4 can be used in conjunction with CoAP. Is this a requirement or can CoAP also be used with other OSI layer 1, 2 protocols such as IEEE 802.11,...
8
votes
1answer
675 views

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 (...
8
votes
1answer
359 views

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 ...
7
votes
3answers
2k views

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 ...
7
votes
3answers
118 views

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 ...
7
votes
2answers
1k views

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 ...
6
votes
2answers
243 views

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 ...
6
votes
1answer
108 views

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 ...
6
votes
0answers
1k views

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 ...
6
votes
0answers
229 views

BLE only partially connected in iPhone? [closed]

I am trying to use BLE to send strings of data from a CSR8675 chip to an iPhone I am having problems pairing the chip with the iPhone for BLE communication, and need some ideas on how to proceed ...
5
votes
2answers
539 views

Read and Send Orientation Sensor Values from Android to Arduino

I'm trying to read orientation sensor values from android and send them to an Arduino. The android will send valueX, valueY and valueZ in bytes. Each value will end with x,y and z character at end of ...
5
votes
1answer
94 views

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 ...
5
votes
1answer
4k views

How do the AirPods communicate with the phone?

By reading the iFixit Teardown, one can realize that the AirPods use the W1 chip for wireless communications. Since both Airpods are wireless, there are questions still unanswered. Do both Airpods ...
5
votes
1answer
178 views

Programming of change of keys on full numbering of CSR bluecore chips

Who can tell how you can change the key values for the full numbering of SCR bluecore chips. The built-in function only modifies the user keys from 0 to 49. I tried to change the first digit of the ...
5
votes
1answer
4k views

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 ...
5
votes
2answers
344 views

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 ...
5
votes
0answers
302 views

Creating COM serial port between external device (Joule/Arduino/etc.) and PC over Bluetooth w/ linux sdptool & rfcomm (OR another method)

This article is not device specific, but rather is focused on using sdptool and rfcomm to setup a serial com port connection over bluetooth. If you have another method instead of these two Linux ...
4
votes
2answers
131 views

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 ...
4
votes
2answers
575 views

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....
4
votes
2answers
5k views

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 ...
4
votes
0answers
360 views

Using CSR's 2-mic bluetooth headset program without actually placing a telephone call [closed]

I am asking about the CSR 8675 Bluetooth audio chip (the solution to this problem will be similar in the other related chips in the same family) and I am using ADK4.0.1 The CSR 8675 contains VM (...
3
votes
3answers
479 views

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 ...
3
votes
1answer
245 views

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 ...
3
votes
1answer
850 views

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 ...
3
votes
2answers
253 views

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 ...
3
votes
1answer
69 views

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 ...
3
votes
0answers
20 views

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 ...
3
votes
0answers
70 views

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 ...
2
votes
1answer
1k views

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 ...
2
votes
1answer
61 views

In the name of the lineup 4, 5 and 6, for example Bluecore-4, 5,6, is taken from the XAP4, 5,6?

Tell me please, in the name of the lineup 4, 5 and 6, for example Bluecore-4, Bluecore-5, Bluecore-6, is taken from the MCU XAP4, XAP5 and 6 respectively? Suspicious coincidence. Where can you read ...
2
votes
1answer
50 views

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 ...
2
votes
0answers
348 views

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 ...
2
votes
0answers
489 views

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 ...
2
votes
0answers
72 views

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-...
2
votes
0answers
341 views

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,...
1
vote
1answer
49 views

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 ...
1
vote
0answers
14 views

How to trigger my switchbot automatically after a set amount of time?

How can I trigger my switch-bot (a Bluetooth smartphone controlled button pusher device) manually at first and a 2nd time automatically after a set amount of time (30 minutes for example), using ...
1
vote
0answers
28 views

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 ...
1
vote
0answers
32 views

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 ...
1
vote
0answers
188 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
0answers
48 views

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 ...
1
vote
0answers
98 views

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)....
0
votes
2answers
552 views

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/...
0
votes
1answer
476 views

Programming bluecore bc417 scr .Uart generates messages when data is fed to the source?

When programming a Bluecore bc417 chip, does UART generate messages when data is inputted to the source? For example, MESSAGE_MORE_DATA, MESSAGE_MORE_SPACE. For me, for some reason these messages are ...
0
votes
0answers
9 views

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 ...