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Questions tagged [bluetooth-low-energy]

Bluetooth Low Energy ("BLE") is a new radio standard, introduced in 2006. Bluetooth Low Energy is a subset of Bluetooth v4.0.

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What is the definition of Bluetooth peripheral device?

What is the basic definition of a bluetooth peripheral device, bluetooth master device and a bluetooth slave device, and what are the functions of each of them? How to define them in a BLE system? ...
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1answer
18 views

MSP432+BLE+ Debugger interfacing

I would like to Interface a BLE to a MSP432 microcontroller in serial. The BLE has a inbulit Atmel controller. I have a firmware for BLE in keil. Intially I have flashed the firmware to BLE directly ...
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42 views

calculating the distance between BLE of RPI3 [duplicate]

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

Mapping backyard by using multiple antennas/beacons [on hold]

I'm thinking about making my own autonomous lawn mower. This is just brainstorming idea for me. Most of devices currently on sale is using wire layed or dug into the soil to determine the limits and ...
2
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1answer
51 views

What's the BLE Range?

I am googling too much stuff regarding it and the noise on there has got me completely confused and there is no a single fixed range I should be checking my system with. ( I am software engineer and ...
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0answers
50 views

Issues while interfacing UART [closed]

I would like to program an bluetooth device. I have MSP-EXP432P401R development board. This board has two parts debugger and MCU. I have taken out all jumper on J101. I have connected SWDIO and ...
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1answer
25 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 ...
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1answer
63 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 ...
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2answers
39 views

RF Design - Antenna Feed-line Parameters

I am implementing a BLE device with a chip antenna. The device has already been impedance matched to 50Ω and is ready to be connected to the feedline and antenna. The antenna datasheet has a ...
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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?
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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 ...
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0answers
78 views

Lithium battery performance in cold temperatures powering BLE Beacon

I am working on a project that requires the use of BLE Beacons in very low-temperature environments, on average -15°C but on occasion as low as -25°C. We are currently trialling a brand of BLE Beacon ...
2
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1answer
95 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 ...
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2answers
116 views

OTA Programming of STM32

I am currently using ST32L152RE controller interfaced with BLE CC2640R2F module and 4 MB external flash memory interfaced through spi. I was trying to upgrade the firmware of my st controller using ...
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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 ...
2
votes
1answer
182 views

STM32WB55 Nucleo bluetooth stack firmware binary in bootloader mode

I want to upgrade the firmware for the bluetooth stack on the STM32WB. It requires the device to be in boot loader mode and power from the user USB not ST-LINK usb. However I've not programmed a ...
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0answers
52 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 ...
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1answer
46 views

SPBTLE-1S - ADC Scan?

I'm trying to use the SPBTLE-1S with 2 analog inputs and read the chip temperature setting, but it seems that if I try to change the mux, it results in garbled readings (eg, temperature reads -120C or ...
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0answers
25 views

Decrease the datarate on BLE module for more range

I'm using a HM-10 BLE module with an Arduino for my project and I really need more range. I have read that on the new Bluetooth 5 spec you can decrease the datarate to get more range, is this possible ...
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1answer
90 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 ...
3
votes
4answers
134 views

How to measure micro watts (uW) [duplicate]

In an extreme low power project (MCU+BLE SIP running on a CR2016 battery for year(s)) I would like to measure the power consumption under different environments/algorithms. What would be the correct ...
0
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0answers
16 views

Set STEVAL-IDB006V1 in advertising mode

I have a BlueNRG USB Dongle (IDB006V1) Eval board that I'd like to set in advertising mode but I just can't get it there as it throws a HCI_HARDWARE_ERROR_EVENT. I'...
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1answer
39 views

Problem with Bluetooth read range for arduino project

I have been working on an Arduino project for a door entry system in my business office but have encountered a problem. I have a group of 8 working in my office but we have a room which only 3 ...
0
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1answer
136 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) ...
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0answers
32 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. ...
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0answers
85 views

HM-10 sleep mode for CC2541 BLE

Does anyone know when putting HM-10 into auto sleep mode using "AT+PWRM0" (or AT+SLEEP), what sleep mode the CC2541 gets into? There are 3 sleeping modes: PM1/2/3 for CC2541 from the datasheet. The ...
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0answers
24 views

BLE VCO Function Divide by 2

Can someone explain or point to some documentation that explains how the RF front-end works for BLE chips? Specifically, I am confused about why the VCO runs at 4.8Ghz and is then divided by 2. I have ...
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1answer
75 views

Concurrent central and peripheral mode with BLE

I'm having an ARM M3 which I would like to connect on one hand to a smart phone for data visualization and to two sensors for data acquisition on the other hand. Both connections should be BLE. My ...
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0answers
44 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 ...
2
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1answer
438 views

When I write data to a BLE Characteristic (FFE1) to send data over bluetooth, is the data encrypted?

I have a very simple circuit which includes a HM-10 that exposes a CC2541 Bluetooth device. simulate this circuit – Schematic created using CircuitLab It's basically just hooked up to power ...
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2answers
91 views

BLE mesh Provisioning

I am new to BLE mesh. I have a doubt that in BLE mesh as per Bluetooth SIG mesh 1.0 spec , if there are hundred unprovisioned nodes, should these nodes be within direct radio contact of the ...
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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 ...
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1answer
186 views

5V to 3.3V for bluetooth module - Is a voltage divider ok?

So I purchased the JDY-10 BLE 4.0 module and a very small MCU which only is capable of feeding 5v. Since I'm not an electrical engineer, I've been reading a bit on the internet, and so far, I ...
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2answers
103 views

Sending few commands with BLE without microcontroller

I am completely new to electrical engineering, but I am trying to build a small device with three buttons circuit, each one of them would send a different command to the mobile phone via Bluetooth low ...
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2answers
653 views

Is BLE 5 backwards compatible to BLE 4.x ? Can a phone with bluetooth 4.x talk with a device with BLE5

I would like to develop a wearable with a BLE5 module. I wonder if this module would work with any BLE4 enabled mobile phone? I am aware with that it may not use the advantages of BLE5, but I don't ...
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0answers
68 views

Register 2 peripheral UUID with 1 service, NRF52

I have 3 nrf52 boards: 2 act as peripheral and 1 as central device. I want to register 2 different UUID's for the 2 peripheral devices, which contain the same service (0x0001 - NUS for example). I ...
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1answer
106 views

How to associate RX/TX of the BLE RN487x with a LED?

I assembled the scheme suggested by Microchip for the Bluetooth Low Energy BLE model RN4871, pointed out in the schematic of FIGURE 5-4 of the Datasheet (page 26). I've connected a led to Pin 12 (P0_2)...
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1answer
128 views

What is this RF Frontend IC?

This is a picture of the PCB for a Tile Bluetooth tracker. I cant find any info on this chip, and I've looked for a while for the logo. here is a closer picture. The logo looks like three ticks, ...
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1answer
114 views

Alternative wireless technology for passive RFID tags

I am working on a project where I have 3 boxes and a RFID reader (mfrc522) attached at the bottom of each box. I keep my wallet/keys/etc in these boxes and a LCD screen displays what is in each box ...
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0answers
25 views

Running BG Scripts on HM-10 Module

I am working on a low power BLE data acquisition system. HM-10 is based on TI's CC2540/2541 which is the also used in BlueGiga ble. I was wondering if it was possible to make BG scripts work on HM-10 ...
0
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1answer
106 views

How to program SoC chips like CC2541F128RHAT [closed]

I am working on a BLE project. As per initial research, decided to use the cc2541 chip as BLE module. I have found one here. As per the datasheet, it shows it contains BLE and MCU. I need to program ...
2
votes
1answer
111 views

BLE and Bluetooth Classic Coexistence?

we are designing a fairly compact PCB for a communications device. We are looking at using BLE as a link for voice to a separate microphone, and BT Classic to be paired with a smartphone. We are using ...
0
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1answer
19 views

RFID Tag, Xbee or Bluetooth Module

I am just trying to detect if an object is within 7-10 feet from my phone. What device would you recommend? I don't care where it is or anything I just need a way of detecting that that device is at ...
3
votes
2answers
90 views

Vehicle Diagnostics using BLE?

I have a requirement where the diagnostics of a vehicle has to be carried out using BLE. The number of read/write parameters would be over 300. I had worked on BLE devices in a wearable application ...
0
votes
1answer
204 views

Nordic Bluetooth 5.0 Breakout board

I am highly interested in developing a project involving bluetooth 5.0 on a nordic device, namely the NRF52840. However the package of this device is beyond my capabilities/kit for soldering. I have ...
0
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1answer
70 views

How add a chip antenna for the Bluetooth of the module BCM4339?

I have the following concern in a design that I am carrying out. I am working on the development of an electronic prototype that uses as a CPU the module: PICO-IMX6-SD. This module has wifi and ...
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0answers
27 views

bluetooth chip scanning problem

i am using a bluetooth low energy chip v4.2 (RN4870) in my project. Problem here is when the chip is scanning (BLE central mode), it can only finds and returns information of some devices and others ...
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2answers
73 views

Bluetooth programmer

Someone know if there is a way to program uC via bluetooth? I'm referring to a device that receives an hex/elf file from another BT device (smartphone or PC) and sends it to a uC (xmega in this case) ...
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0answers
40 views

Bluetooth Controls instead of R/C Controls for simple Holonomic robot

I am new here and with little experience in electronics. I have assembled this holonomic robot, see link: https://shop.wickeddevice.com/product/omniwheel-robot-complete-kit/ It has 3 Omni-...