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Questions tagged [bluetooth-low-energy]

Bluetooth Low Energy ("BLE") is a radio standard for wireless personal area networks, introduced in 2006. Bluetooth Low Energy is a subset of Bluetooth v4.0.

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Can I give different delays for different parameters while using BLE

I'm working with the BLE transmission. I have to transmit 4 to 5 parameters at the same time but with different delays. Can I do this?. Is anyone have any idea? Here is my part of code to transmit ...
GnanaBarathi SP's user avatar
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Understanding impedance matching in RF PCB applications (STM32WB55)

I'm just getting into RF design since I inherited a board that uses an STM32WB55C for BLE. For now I want to start getting more familiar with the RF concepts since I don't have a lot of experience. As ...
Gustavo Corona's user avatar
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How can I connect a CHW1010-ANT1-1.0-ND to an nrf5340 development board?

I would like to connect a CHW1010-ANT1-1.0-ND to an nrf5340 development board to implement direction finding. This is in the datasheet of the CHW1010-ANT1-1.0 The nrf5340 has a Murata MM8130-2600RA2 (...
beestree's user avatar
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Kindly review schematics of BLE board using STM32Wb55RG

I'm new to emended system and PCB design. This will be my first PCB design. Before moving to PCB design just want to confirm that my circuit will work. Kindly review schematics. Any Feedback is ...
electronicsadvices's user avatar
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How to debug BLE HID Connection (STM32WB55)

I'm working on implementing a BLE HID keyboard using an STM32WB55 (the nucleo board). The BLE HID example they provide is a mouse, where you press a button on the nucleo and input stuff into a menu ...
mitch's user avatar
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BLE interference from DC motors

The problem: I am making a remote control car. The car is being run with a Raspberry Pi Pico W. The power source is a 11.1 V Li-po. The power to the Pico is being stepped down with a 5 V regulator. I ...
thrandale's user avatar
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BLE Connection Issues with RN4870/RN4871 Bluetooth Module

For a project, I want to connect my Laptop to a dsPIC microcontroller via BLE through a Microchip RN4871 module to read some data from a board. I can discover the chip and connect to it, but the ...
Roysten R.'s user avatar
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2.4GHz antenna routing - my version vs reference board layout

I'm working on a project with an nRF52840 on it. Due to space problems on the board I have to deviate from the setup recommended by Nordic, and I lack the experience to tell if I'm setting myself up ...
Gambanishu Habbeba's user avatar
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BLE relay to control my garage door - security concerns

I would like to use Shelly 1PM Mini Gen3 to control my garage door. Since I do not have WiFi coverage in my garage I will rely on Bluetooth. However with this setup I am not sure if this Smart home ...
sidlo's user avatar
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Reverse engineer BLE LED strip protocol

I am trying to create a custom application to control some Bluetooth-controlled LED strips. That is, I would like to reverse engineer how they are controlled without having any datasheet -- I'll ...
Quazgaa's user avatar
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HM-10 can't communicate with Nuvoton MCU

I use HM-10 module with NuTiny MS51 development board. This board has 8 bit MS51FB9AE microprocessor. First I have tried the Bluetooth module with Arduino to see if it works. It worked in Arduino ...
Bowman's user avatar
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Sniffing BLE with multiple NRF52840-DONGLEs?

Nordic provides hardware, firmware and software to sniff BLE in conjuction with Wireshark: https://www.nordicsemi.com/Products/Development-hardware/nRF52840-Dongle https://infocenter.nordicsemi.com/...
handle's user avatar
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BLE HM-10 AT Commands through Bluetooth

I can configure the HM-10 through the serial port, set the baud rate, etc but I need to change these parameters via Bluetooth. It is written in datasheet: AT+MODE?/AT+MODE[P1] - Query/Set Module Work ...
Mike Waters's user avatar
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How would one display raw input to TX pin on a HM-10 BLE module as a graph on a web app?

Basically I'm trying to feed in High low signals into the TX pin of a HM-10 BLE module and display it as a graph, similar to how an oscilloscope would, or possibly just have a threshold where it would ...
rhett a's user avatar
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How likely can a Bluetooth IC get damaged if the antenna has a wide bandwidth?

I design a device with a Bluetooth low energy chip (DA14863) that sits at different positions on the human body (minimal distance of 0.7mm). Simulation shows that the human body absorbes up to 95% of ...
mpa's user avatar
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Using HM-10 module vs CC2540/1

Currently I'm trying to buy a BLE module, and the HM-10 module seems to be a module built around the CC2540 or CC2541 chips. The HM-10 module is a module that works whit UART and AT-commands, I want ...
Electromosaw's user avatar
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Bluetooth uC SoM w/ antennae array for AoA direction finding? (or antenna array daughter card?)

I need Bluetooth AoA on custom PCB I'm designing to have manufactured & populated at a pcb shop. Using nrf53 because its well documented, Nordic's support seems good, and I've used the toolchain ...
some bits flipped's user avatar
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Sparkfun Artemis Nano keeps dropping BLE connection and doesn't notice it isn't connected anymore

I'm working on a device that uses the Sparkfun Artemis (specifically the Nano at the moment) to count the number of times a wheel spins, using a UART based proximity sensor. The device is meant to ...
E.HP.S's user avatar
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What's the meaning of RF power consumption given in mA, not in mAh?

I'm trying to understand the power consumption of an esp32 with BLE enabled and transmitting. Its datasheet provides the following table: As you can see, it provides the power consumtions in mA. I ...
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How can I make a basic BlueTooth communication between a cellphone and MXCHIP EMC3080-P module?

I'm trying to use the EMC3080-P module from MXCHIP, because it's used in some applications from ST, the company where I had the microcontroller I'm using (for example, the B-U585I-IOT02A discovery kit ...
santiago deliotte's user avatar
2 votes
1 answer
299 views

How to access Bluetooth LE features of CYW43439 on Raspberry Pi Pico W?

Raspberry Pi Pico W comes with a chip, CYW43439, that is capable to do WiFi and Bluetooth (both Classic and LE). According to Chapter 2.1 in Raspberry Pi Pico W:s datasheet, GPIO24, GPIO25 and GPIO29 ...
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BLUENRG-LP BLE Antenna Design Query

I am developing a small Bluetooth Low Energy product using the BLUENRG-LP series of SoC from ST Microelectronics. For the RF matching part, I was told on their forum to just copy the design in their ...
CapEmb's user avatar
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What's the best RF scheme and chip for my project?

I'm making a little scanning beacon gizmo. When a laser shines on it from ~40m away, it is supposed to transmit its ID and HIGH (1) to the laser controller ~40m away. Otherwise, transmit 0 or nothing. ...
Popeye's user avatar
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Bluetooth trilateration using nRF5340

I am a total beginner in working with RTOS and Zephyr and nRF devices. I would like to build a Wireless Sensor Network which consists of 3 nodes (maybe set in a Bluetooth Mesh) whose primary objective ...
Andreiul's user avatar
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ESP32-C3 Picoclick C3 missing component

I'm putting together a small PCB. It's based on the open source Picoclick-C3 by the fantastic maker MoeKoe: https://makermoekoe.gitbook.io/picoclick-c3/hardware In the part of the circuit for the wifi ...
legoblocks's user avatar
1 vote
2 answers
483 views

NRF52 - unexpected high power in idle mode

I am trying to program a low-powered Bluetooth Low-Energy sensor using an nrf52810 microcontroller. I am trying to minimize power consumption when the sensor is idle. I have created a minimum code ...
ItsAmy's user avatar
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ESP32 BLE Bluetooth Serial to Hardware Serial Bridge

I'm looking for a way to use serial devices with my iOS iPhone without buying a $20 device. I have an ESP32 which can do Bluetooth Serial to Serial using this code but if I replace the Serial with <...
UnknownDagger's user avatar
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Implementation of microsecond timer on NRF52832 using sandeepmistry nrf52 library

Can anyone please describe how to use sandeepmistry nrf52 library to create an accurate microsecond timer, without using any standard delay functions. I'm using the timer on a generic nrf52832 design ...
Pete_xavier's user avatar
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2 answers
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is Bluetooth SIG registration required?

I'm using a Bluetooth module that is certified and meets all needed regulatory requirements. I tested my end product for all the EMC requirements. I do not care about using the Bluetooth Logo. can I ...
joe's user avatar
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WT901BLE not showing/advertising service UUID to the ESP32

We are pairing WT901BLE device with the ESP32.When WT901BLE is paired with smart phone application Reconnect then service UUID is shown. I have read on some forums that some devices don't advertise ...
Imran Mumtaz's user avatar
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How to implement NRF52840 BLE DFU using Zephyr RTOS?

I am using Zephyr RTOS to run an NRF52840 module using NRF Connect SDK V2.2.0. Can anyone please indicate on how to implement BLE DFU with Zephyr. My current application already has BLE read and write ...
Chris's user avatar
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ESP32-S3 BLE multiple servers connect to one client at a time

I am working with ESP32-S3 module on Arduino IDE.I need to connect to multiple BLE servers to one client and able send and receive data from client to all servers at a time. I tried connecting ...
Sireesha's user avatar
2 votes
3 answers
123 views

Could I program my own application firmware on a certified BLE module?

I want to send some data which I get from a sensor with I2C over Bluetooth LE. Is it possible to bring my own application which reads the sensor data together with the BLE stack onto the certified BLE ...
Mike's user avatar
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NotImplementedError: in FeatherS3 - ESP32-S3 Adafruit (BLE HID)

I am trying to upload a BLE HID code to FeatherS3 - ESP32-S3 Adafruit and get a NotImplementedError. I have no idea how to proceed forward. Please help me on this. This code works perfectly on a NRF52 ...
Wedahitha Yapa's user avatar
1 vote
1 answer
303 views

BLE HID Keyboard Device for iOS

I'm using a Dialog SmartBond DA14531 as a BLE HID Keyboard device. It works on Windows but not on iOS. Although it pairs successfully, the HID key events do nothing. Does anyone have any experience ...
Charlie Skilbeck's user avatar
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297 views

BLE in STM32WB does not work on a custom PCB board. How to check where the problem is?

STM32 - STM32WB55CGU6 Antenna - 2450AT18B100E Filter - MLPF-WB-01E3 Please help me fix the problem with my custom PCB board and BLE. The antenna on the board won’t work (I don't see my device via ...
ehgrh's user avatar
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1 vote
2 answers
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Feedback on PCB-layout wanted

I'm currently making a weather station as a personal project. It will consist of one BLE peripheral and one BLE central. I will fabricate both as one PCB, and panelize them with a vcut. As mentioned ...
user294957's user avatar
-3 votes
1 answer
245 views

How to install BLEServer.h and AVRdude.h

Chatgpt suggested the following code to upload for my Blend Micro to advertise it as a peripheral. However, I do not have the BLEServer.h and AVRdude.h packages installed. Could anyone help me install ...
penpen54's user avatar
1 vote
1 answer
87 views

Implementing nRF52840 as modem only

I do a lot of embedded electronic design with a handful of microcontrollers, and I want to make a variant of an existing product of mine a Bluetooth LE central device so as to talk to some specific ...
quiver's user avatar
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BLE Sleep and Rx Mode

A Generic Tx Node: Cycle time - 5s. Tx Time (wake up, Tx, Sleep back) - 0.1ms -> current consumption 30mA. Actual Sleep Time (some sleep mode)- 4.9ms -> current consumption 20uA. However for a ...
ankit sultania's user avatar
2 votes
1 answer
594 views

Taking a BLE product to market utilizing a pre-certified Bluetooth module

I've designed a product that utilizes a Raytac MDBT50Q-P1MV2 'pre-certified' MCU+Bluetooth module (based on Nordic nRF52840) and am now considering what it would take for me to legally sell such a ...
DrTarr's user avatar
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What is the power consumption of 200ms of Bluetooth Beacon advertising/broadcasting

I'm running an ESP32 on 3 AA batteries. It wakes up up to 1000 times a day, then sends a Beacon advertisting for 200 milliseconds, and then goes to deep sleep, until ...
Basj's user avatar
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Esp32 BLE repeater

I am using ESP32-S3 custom development board for my project. I want to implement BLE repeater behavior in my project. The idea is I have three ESP32-S3 boards.One as a server other as a receiver if ...
Sireesha's user avatar
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1 answer
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How to build a BLE mesh node using HM-10?

I'm new to BLE and have been reading on BLE mesh and it seems perfect for my application. I have multiple HM-10 modules and I'm able to send/receive data using a simple Arduino connection and a BLE ...
netbug's user avatar
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Bluetooth IC performance improves after resoldering/heating

This is a very general question and I'm trying to brainstorm and get some insight into potential issues, things to watch out for etc. Unfortunately, I can't share the schematic or the datasheet. My ...
pcbguy's user avatar
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Adding a Bluetooth Peripheral to an STM32

I'm making a device that is powered by an STM32F072C8Tx. I want to add a bluetooth peripheral to this that can connect to the computer as a HID and transmit keypresses. I've considered swapping the ...
ScottishTapWater's user avatar
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1 answer
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Bluetooth module GPIO control

Note: This is my first real electronics project I've worked on by myself so I might just be asking a dumb question or this might be in the wrong forum. I am trying to figure out the hardware side of a ...
Jacob Kelley's user avatar
2 votes
1 answer
307 views

Using SWRA117D 2.4 GHz antenna on a large board

I've added the board image. There is one ESP32-C3 on a 2 layer FR-4 board. My question is, how much I'm compromising with the efficiency of the antenna by placing it on a ~52X85mm board considering ...
Dipanshu's user avatar
1 vote
0 answers
73 views

Reverse trilateration / multi-lateration using BLE Beacons

I'm currently working on a proof-of-concept to work out the estimated locations (longitude and latitude) of outdoor beacons with unknown locations to begin with. The solution will use a mobile ...
LawrenceH's user avatar
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ESP32 - NimBLE increase throughput

I'm doing a OTA DFU with two ESP32 to upgrade a STM32 uC. This works out reliable so far, but the transmission speed over BLE between the two STM32 is really slow and so the DFU takes up to 10min, ...
HansPeterLoft's user avatar

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