ESP32 + BNO085 – Data Stops Displaying on Serial Monitor

sddsds · March 17, 2025, 9:17am

Hello,

I am experiencing an issue while communicating between an ESP32 and the BNO085 using the SparkFun library and the example:

github.com/sparkfun/SparkFun_BNO08x_Arduino_Library

examples/Example_01_RotationVector/Example_01_RotationVector.ino

main

/*
  Using the BNO08x IMU

  This example shows how to output the i/j/k/real parts of the rotation vector.
  https://en.wikipedia.org/wiki/Quaternions_and_spatial_rotation

  By: Nathan Seidle
  SparkFun Electronics
  Date: December 21st, 2017
  SparkFun code, firmware, and software is released under the MIT License.
	Please see LICENSE.md for further details.

  Originally written by Nathan Seidle @ SparkFun Electronics, December 28th, 2017

  Adjusted by Pete Lewis @ SparkFun Electronics, June 2023 to incorporate the
  CEVA Sensor Hub Driver, found here:
  https://github.com/ceva-dsp/sh2

  Also, utilizing code from the Adafruit BNO08x Arduino Library by Bryan Siepert
  for Adafruit Industries. Found here:

Ten plik został obcięty. pokaż oryginał

I have connected power and the SDA and SCL pins. The data appears on the serial monitor, but after a few seconds, it stops updating. After resetting the device, the same issue occurs.

Could this be caused by the reset pins?

github.com/sparkfun/SparkFun_BNO08x_Arduino_Library

examples/Example_01_RotationVector/Example_01_RotationVector.ino

fd0149c28


      
          
            Feel like supporting our work? Buy a board from SparkFun!
            https://www.sparkfun.com/products/22857
          */
          
          #include <Wire.h>
          
          #include "SparkFun_BNO08x_Arduino_Library.h"  // CTRL+Click here to get the library: http://librarymanager/All#SparkFun_BNO08x
          BNO08x myIMU;
          
          // For the most reliable interaction with the SHTP bus, we need
          // to use hardware reset control, and to monitor the H_INT pin.
          // The H_INT pin will go low when its okay to talk on the SHTP bus.
          // Note, these can be other GPIO if you like.
          // Define as -1 to disable these features.
          #define BNO08X_INT  A4
          //#define BNO08X_INT  -1
          #define BNO08X_RST  A5
          //#define BNO08X_RST  -1
          
          #define BNO08X_ADDR 0x4B  // SparkFun BNO08x Breakout (Qwiic) defaults to 0x4B

Has anyone encountered this problem or knows how to fix it?

Best regards.

gilshultz · March 17, 2025, 2:51pm

Post your annotated schematic showing exactly how you have wired it. Be sure to include all connections, power, ground, power sources and any other items connected.

system · September 13, 2025, 2:52pm

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ESP32 + BNO085 – Data Stops Displaying on Serial Monitor

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