Questions tagged [imu]

An inertial measurement unit (IMU) is an electronic device that measures and reports a body's specific force, angular rate, and sometimes the orientation of the body, using a combination of accelerometers, gyroscopes, and sometimes magnetometers.

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Bug in code of Self-Balancing Bot

1)The values drifts to the extreme every time I run this , I guess this is due to my mistake in the calculation of angles or in the filter that I have applied which I have been trying to but can't ...
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1answer
68 views

SPI synchronization with Arduino DUE and ADIS16364 IMU

I'm trying to use an Arduino Due to interface with an ADIS16364 IMU from Analog Devices (product info here) via SPI. There are two modes for retrieving the measurements from this particular IMU (six ...
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How to connect multiple MPU-9250 IMU sensors to a single Arduino Uno? [duplicate]

The datasheet says the I2C bus limits itself to only two MPU-9250 sensors. How can I control multiple (>2) MPU-9250 through a single Arduino Uno? Is it possible to add another bus? Please, help.
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43 views

Best way to obtain angular velocity from a 9 DoF sensor

I have been using a BNO055 sensor (9° dof IMU) for a project which will use angular velocity to the mouse cursor on screen. So far, I have gotten quaternion output from the sensor and been able to ...
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1answer
49 views

Obtaining angular velocity from quaternion data (BNO055)

I'm able to get quaternion data from the BNO055 sensor, and would like to convert these to angular velocity for my project. I know you can pull the gyroscope directly for the data, but from what I ...
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1answer
51 views

What pins to use on a Teensy to get data from multiple peripherals?

I'm using a Teensy to keep records on the location, speed, altitude, and direction of a weather balloon I'm hoping to launch. I have an Adafruit LSM9DS1 and a Ublox NEO-M8N with compass (HMC5833L) so ...
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1answer
133 views

Changing address of MPU 9250 connected to ESP32

Can I change the I2C address of a device (MPU9250) connected to ESP 32 using int pin. I understand that in arduino board if we connect the int pin to A0 the default I2C address of MPU 9250 changes ...
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2answers
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Most precise way to measure Linear distance travelled by a wheel

Suppose a bot with wheels is traveling in a a straight line,and we want to measure this linear distance traversed by it as accurately as possible. One of the ways is to use an optical encoder to ...
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2answers
311 views

Finding Relatively Accurate Velocity Using an IMU

I am currently working on a project where I am trying to accurately find velocity in a handheld device using an IMU for about 30 seconds. I have been having major issues doing this because of large ...
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1answer
65 views

Getting Accurate Velocity Readings From IMU

Hi I am currently using a BNO055 for a design project. This sensor outputs a linear acceleration vector corresponding to three (xyz) directions. I am trying to "integrate" the acceleration ...
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529 views

Arduino Nano IOT LSM6DS3 get gyro angle in degrees

I have an Arduino Nano IOT and I want to get the angle of it using the built-in gyro but I can't seem to find any example code that does this. The default Gyro and Accelerometer example code doesn't ...
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1answer
62 views

IMU (MPU9250) and Ticker on ESP32

I want to read the data from an IMU (MPU9250) periodically. To do that I use a ticker as shown in the following code: #include <Ticker.h> #include "MPU9250.h" constexpr int ...
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67 views

Understanding the pin diagram for MPU6050 IMU

I was reading this tutorial about the MPU6050 IMU and I was unable to understand why the pin configurations vary so much when compared to this schematic for EasyEDA. The tutorial has this pin ...
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1answer
53 views

Setup/Debug affordable 9DOF IMU

I bought a 9 DOF IMU from AliExpress (pictures below), asking because this seems to be somewhat of a common issue (and I'm a bleeding noob). I tried setting up this board using example codes from ...
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1answer
110 views

MPU6050 Problem with NodeMCU

I am using MPU6050 as a part of IMU of my drone, and I wrote this program for Arduino Nano to fetch the orientation of the MPU6050 module in 3D space. And that works perfectly fine, but when I ...
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122 views

SPI communications with an IMU

I am pairing an Arduino UNO with a Yost Labs 3-Space Sensor Nano, the user manual for said sensor can be found here: 1. This is my code, pretty straight forward (although this is my first time working ...
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91 views

Relative position using Accelerometer

I have a simple scenario please: Two Arduino Nano 33 IoT devices started moving randomly from the same exact origin(Point = [X0, Y0, Z0]); Can I use the coordinates queried from each device ...
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1answer
35 views

possible to preform VIO from two cameras/imu's on a dual-core esp32?

Like the title says, I want to take in the synchronised data from two NXP breakout boards and two Ueye 1220LE Cameras, and use VIO to fuse their data and get positions for both setups. Alot of people ...
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1answer
235 views

MPU-9250 compass always returns to zero

I am trying to build a 9-DOF IMU using the MPU-9250 chip which contains a gyro, accelerometer and compass. I have successfully realized 6-DOF sensor fusion using the DMP chip and Sparkfun's library, ...
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Saving Power :: Reducing Power Consumption

For Arduino Nano 33 IoT, I want to turn off everything except Bluetooth and Wireless since I don't use them. My question please: Can I switch off / deactivate the IMU sensors completely? If yes, How ...
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1answer
67 views

How can I declare custom pins when using with ESP8266 in MPU9250 library

I want to declare SCL and SCK pins like Wire.begin(sda_pin, scl_pin); to use with ESP8266 to integrate a MPU 9250/6500 sensor. I can't figure out a way to declare that in this code exaample provided ...
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10 DOF gyro and accelerometer to x,y,z displacement

I have a 10 DOF sensor with wire outputs labeled "VIN", "GND", "SCL", and "SDA". I would like to wire these into my arduino and ultimately obtain x, y, and z displacement. This might sound like a ...
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MKR 1000 not found in ports when MKR IMU Shield is connected

I am trying to connect my MKR IMU Shield to my MKR1000 by placing the IMU shield in the MKR1000. When I do this, however, the Arduino IDE and Simulink are unable to find the port that my Arduino is ...
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208 views

Is there a library for non-SAMD Arduinos to use the DMP on MPU9250

I would like to use the DMP of the MPU9250 with my BTLE Feather board but the docu of the official library says that only SAMP-Processors are supported. Is the a different library I can use?
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Trouble in sensor data reading sequence

I am reading from two MPU6050 sensors using Arduino Uno but it give trouble in squence. The code is perfect and also sensors reading is done. See image of serial monitor. You can see the above ...
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220 views

Remote Controlled Self-Balancing Robot - how to mix control input with IMU input?

I'm building a two-wheeled, self-balancing, remote-controlled robot. I'm familiar enough with the IMU and PID to get it working to just stand up but I need to drive it via remote control. I've got no ...
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1answer
52 views

How to power and switch on / off multiple boards at the same time?

I have many nodes. Each node consists of an MPU9250 and ESP32. Each node functions independently. They don't interact with each other. How can I power all of them at the same time, and switch them ...
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1answer
249 views

GY91 IMU module, Interrupt?

Are there interrupt Pin in the GY91 Module? If not, are there good alternative for periodic sensor reading? (apart from mcu schedule/external timer)
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A proper way to get the roll, pitch and yaw values

TL, DR : What is the method(in terms of sensors and algorithm) to get the roll, pitch angles of an aircraft at any instant. I am planning to build a hobby aircraft. I am so confused about which kind ...
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457 views

using two mpu6050 to get more accurate and precise angles

i have been using this gyro for a while, now i am aware of all measures taken, to improve the outcome of this board. my question is: would using two at the same time improve the results? if yes how ...
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1answer
532 views

Possible to connect 3 MPU9250 to Node MCU without multiplixer?

Is the idea of connecting AD0 pins of MPU9250 is still valid like the 2nd answer of this question? - How to change i2c address for mpu9250? I have connected 2 sensor as test. SCL & SDA of both ...
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How to connect MPU9250 with NodeMCU using SPI or I2C Slave?

I want to connect 3 MPU9250 sensors, but since there is just one I2C bus, so there are another 2 sensors I want to connect through SPI. Library used - https://github.com/bolderflight/MPU9250/blob/...
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How to connect 3 MPU9250 to Node Mcu together?

I don't know how to connect 3 MPU9250 together on Node Mcu. There is not much information available. I am using bolder flight library for imu sensor - https://github.com/bolderflight/MPU9250 Can ...
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1answer
235 views

Not able to convert String to Integer when receiving data from pubnub?

I did managed to upload mpu9250 sensor data on PubNub and nodeMcu but not able to use the received data to control servo Look at the Port reading and see that servo angle is still showing '0' Code:-...
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771 views

Not able to find right library for MPU9250

I am using an Arduino Uno and learning to use the motion sensor. Currently I was not able to find the library which looks simple and would like to get your suggestion. I found this https://github.com/...
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672 views

Determining direction from IMU accelerometer data

I am learning how to integrate sensors on arduinos and read their data. My ultimate purpose is to place the IMU on a robot and use it in determining the robots location in an environment. Using the ...
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0answers
1k views

MPU6500 via SPI

I'm trying to communicate with an MPU6500 sensor via SPI as I need the fastest possible update rate. I have trouble finding an easy to understand sample code, or perhaps a lightweight library how to ...
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1answer
524 views

Does the position in which you mount an IMU matter?

Forgive me, I'm sure this is a total noob question, but I have never seen it actually addressed in any example or demo. When using something like a MinIMU-9 board (https://www.pololu.com/product/...
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1answer
193 views

Circuit works on breadboard but has power problems on protoboard

I'm building a simple circuit that takes data from an IMU (using MPU6050), sends it to a microprocessor (Arduino Pro Mini 5V) to apply data smoothing and averaging, and then this data is sent using an ...
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1answer
7k views

'import' does not name type ERROR

I am working with a group of people on an arduino controlled BB8 robot. We are using an IMU unit (accelerometer+gyroscope). I found a processing example for the IMU unit we are using. The code is ...
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1answer
262 views

MPU9250+arduino pro micro strange behaviour after reset

I have an arduino pro micro + mpu9250. For test sketch I'm using https://github.com/sparkfun/SparkFun_MPU-9250-DMP_Arduino_Library It works as intended after the first sketch upload. After that if I ...
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1answer
767 views

Store values in array

I'm trying to implement the "BNO055 9 Axes Motion Shield". There is an existing Arduino sketch GitHub that reads out the Euler data, I changed it a bit to print out quaternion data. #include "...
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1answer
4k views

Getting stable measurements with the BNO055 IMU

I bought the BNO055 "smart" IMU from Adafruit, thinking it would be a simple way to get orientation data for a small mobile robot project, but I've found the thing to be very difficult to use and ...
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1answer
22 views

rev id and read_rev_id() function

What is a rev id? I have looked everywhere for a proper definition but I haven't found anything. I am trying to understand the code below. I don't understand why this read_rev_id function is necessary ...