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.
64 questions
0 votes
1 answer
86 views
Connecting two Arduinos via BLE 5.0
I have this issue where I'm transmitting sensor data from Nano Sense Rev 2 (transmitter) board to Nano 33 BLE rev 2 (receiver). The receiver keep failing to detect and connect to the transmitter and ...
-1 votes
1 answer
92 views
Can't connect to Arduino Nano 33 BLE while MicroPython file is running
I am using a Arduino Nano 33 BLE and I'm using MicroPython to write code for my board using Arduino Lab for MicroPython. I uploaded a file with the name main.py to my Arduino to test if it would work ...
1 vote
0 answers
84 views
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 ...
0 votes
0 answers
70 views
Arduino bluefruit nrf52 - check if softdevice is "busy"
I'm using a Bluefruit nRF52 with Arduino framework, and using Bluefruit library. It's connected to the Bluefruit connect app, but also acting as an SPI slave for another device (an stm32). I'm having ...
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2 votes
0 answers
941 views
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 ...
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5 votes
1 answer
351 views
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 (...
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1 vote
1 answer
311 views
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 ...
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1 vote
0 answers
136 views
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 ...
1 vote
0 answers
428 views
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+...
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2 votes
0 answers
96 views
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 ...
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1 vote
1 answer
858 views
ESP32 - BLE does not connect/restart after light sleep
noob in arduino here. I'm trying to connect via BLE after the ESP32 wakeups from light sleep. I have tried many different things, but none of them work. Everything works fine before the device sleeps ...
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1 vote
0 answers
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Connecting HM-10 and relay to Arduino Uno
I have an 8 channel relay, an Arduino Uno, and this HM-10 bluetooth module: https://www.amazon.com/dp/B06WGZB2N4 The Goal Send a number (1-8) from my Android phone via bluetooth to turn a relay on. ...
0 votes
2 answers
1k views
How to get the scan duration below 1 sec with Arduino BLE?
I want to scan continuously for other Bluetooth devices with my ESP32 using BLE. The scan method only accepts integers larger than 0, such as scan->start(1, false). However I want the results to be ...
- 109
0 votes
1 answer
150 views
How does a callback function get revoke itself eg. Connect function get revoked when there is new connection
Further to my previous question here Can anyone help me understand how the callback function gets revoked itself? The connect function, disconnect function. BLE custom UUID code source here Another ...
1 vote
1 answer
763 views
nRF52832 BLE "conn_handle" to disconnect the current connected devices
I'm working on nRF52832 Bluefruit Adafruit Module. I want the BLE connection to disconnect using a function and can call whenever required. But the issue is the disconnect function needs "...