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Questions tagged [ble]

Stands for "Bluetooth Low Energy." BLE (also "Bluetooth LE") is a variation of the Bluetooth wireless standard designed for low power consumption. It was introduced by the Bluetooth Special Interest Group (Bluetooth SIG) in December 2009 as part of the Bluetooth 4.0 specification.

Stands for "Bluetooth Low Energy." BLE (also "Bluetooth LE") is a variation of the Bluetooth wireless standard designed for low power consumption. It was introduced by the Bluetooth Special Interest Group (Bluetooth SIG) in December 2009 as part of the Bluetooth 4.0 specification.

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MacBook + BLE Microcontroller Incompatibility?

I've programmed an Adafruit Feather nRF52840 board to send MIDI signals to my computer via BLE. I can confirm that the board pairs successfully with an Android phone and a Windows PC, but my laptop (MacBook Pro 2021) will not recognize the board; it…
carsoap
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BLE HM10 - Set Password - Android Pairing Problem

I have developed an application on Android, which connects to a Bluetooth HM10, launches commands, and turns LEDs on and off through my Arduino. All of this works properly. So, I want to make Bluetooth secure, so that nobody can connect to it, and…
Javier
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Send large file over BLE with ESP32 Wrover B

I have been able to get a large file to be sent in packages over BLE to a characteristic on my ESP32-Wrover-B module (yay!). However, these files can be large (+300kb) so I need to repackage them after all the file data has been sent (in chunks), to…
NRav
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BLE disconnect during code "pause"

I have a code that should pause the script for a specific time (x_time). if x_time is above 30-40 sec the BLE connection to the android phone is lost. Any suggestions on how to avoid the lost connection and creating a pause in the…
Masilila
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Send/Stream BLE (Bluetooth Low Energy) data with high data rate with Arduino

My project is to transfer an image wirelessly via BLE from my Sparkfun EDGE board using the Arduino IDE to another laptop. In the following, for simplicity, I have reduced the program to transmit integers via BLE. This already works but it takes a…
Bene Gesserit
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Send sensor data through GATT with Adafruit Bluefruit

I have the BLE Module Adafruit ItsyBitsy nRF52840 Express and I want to send sensor values from a Hallsensor to my computer. I was able to have the right data checking with the Serial monitor. int adcin = A1; int adcvalue = 0; float mv_per_lsb =…
Hanuman
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How can I rewrite my Bluetooth Classic Arduino code into Bluetooth Low Energy Arduino code (and have everything working the same)

My original code for BT Classic My Work in Progress BLE Code I am trying to take all I did in BT Classic and have it working exacly the same in BLE but the Rssi keeps returning 0's in the BLE code and I don't get why, even after I do connect with my…
Melody April
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Antenna for ESP32-pico-d4

I am currently playing a bit around with the esp32-pico-4d, it does not have an onboard antenna, so an external antenna is needed, tho I don't know a lot about it so a little help would be appreciated. I found…
Marius Wanscher
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Connect more than 4 BLE clients to ESP32 BLE Server

I want to create some buzzers connected via bluetooth for a quiz show. I got several ESP32. One of them is the master (BLE Server), the other ESP32s are the buzzers (BLE Clients) with one big button and some LEDs each. The master sends commands…
Tetopia
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Error compiling for board Arduino Nano 33 BLE

I am trying to use pulse sensor with Arduino Nano 33 BLE sense, but when I verify it, it shows Error compiling for board Arduino Nano 33 BLE. The code is from the pulse sensor website. The code works with all Arduino board, but it is not working…
Syfian Bukhari
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esp32 and the esp32-cam (agoal)

Is it considered possible to use the esp32 code on an esp32 cam board? Do they use the same hardware? I am having difficulty using this sketch https://gist.github.com/wybiral/2a96c1d1605af7efa11b690586c4b13e on my esp32 cam and I think it is because…
David Graff
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Reading from Analog Mic and Transmitting over BLE (Nano 33 BLE)

I'm trying to read from an analog mic with a sampling frequency of 10 kHz and transmitting the data over BLE on Arduino Nano 33 BLE Sense Rev 2. The MCU reaches that sampling rate with no problem but once I activate BLE it starts having a delay too…
Itay Pachelbel Jacob
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MKR 1010 WIFI Built-in RGB LED not working with BLE

in addition to the standard LED_BUILTIN, MKR 1010 WIFI comes with a built-in RGB LED. This RGB LED fails when used along the on-board BLE, no matter what program sequence I test. To reproduce the issue, turn on the LED and then start BLE which will…
Nino
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how to config size USB mass storage arduino nano ble 33?

I see that they arduino nano ble 33 support USB 2.0. Is there a way for us to create a USB mass storage of about 200kb for convenient storage of configuration files and history files? I see example arduino has UsbMassStorage but by default it only…
Nguyễn Thuận Hải
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How to query data from my ELM327 via BLE?

I have a HM-10 module connected to my Arduino Nano that I want to use to get data from a ELM327 OBDII. I have been able to successfully connect to the ELM327 via: AT AT+RESET AT+BAUD2 AT+ROLE1 AT+IMME1 AT+DISC? AT+CON4823350035BB I sent "ATZ"…
leopardxpreload
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