Sensors & IMUs (646)

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$100 Gift Card to whoever solves this: Airspeed Creep - Airspeed artificially increasing - Fixed Wing (ROUND TWO!)

This is another post on this problem, this will be the most thorough.  I am not the only one with this issue as it dates back to at leas…

Started by Chad Frazer

45 on Thursday
Reply by Andrew Tridgell

Sentera DJI NDVI Upgrade

Dear users, we are about to buy an NDVI upgrade for the Inspire 1. There are several providers and maybe you can give us a hint about Sent…

Started by Mr. Fox

0 Nov 22

Which Outdoor Ultrasonic Sensor to Use with APM 2.5?

I recently completed the build of my amphibious quad and would like to add a sonar to it.  I see there are a number of outdoor sensors avai…

Started by Dave Shrader

6 Nov 21
Reply by Andrew Jackson

Centripetal AHRS Compensation problems

Hi all, this is my first post here but I've been lurking, reading and studying for a while. I'm involved in a project entailing the develop…

Started by Gavin Jaime Fouche

1 Nov 21
Reply by Phillip Schmidt

accelerometer calibration only in half of the sphere working

Please see the picture below; One of the two accelerometers (we think the one from the externam ublox gps module) is not calibrating like i…

Started by Robbert huizen

1 Nov 17
Reply by Andre K.

Temperature sensor support on APM

Does the APM code include a possibility to add additional temperature sensors to the system? It would be nice to have live temp readings fr…

Started by Veikko Vierola

3 Nov 2
Reply by Shaun Bell

Pixhawk PX4 with Maxbotic I2CXL-MaxSonar-EZ2

Hello, I have an I2CXL sonar sensor that I want to use for altitude measurements indoors. I've connected it to the I2C extender that came…

Started by Nick Charabaruk

5 Oct 24
Reply by Crady von Pawlak

imu time stamp conversion to seconds

Hi,  i am using my pixhawk on a helicopter model. i have seen that there is a data column called time stamp in the data. but, im having tro…

Started by karthik pakala

0 Oct 19

Experience with Bosch Sensortec BNO055 IMU ?

As there are a lot of experimenters and DIY people here, I have a small question... I have been playing around with the MPU-9150 IMU from I…

Started by Carsten Groen

9 Oct 16
Reply by Gary McCray

Madgwick IMU Filter: Define the Sample Rate / Freq. correctly

Hello, how is the SampleRage (variable "SampleFreq") set correctly by Dr. Madgwick's IMU-Flter (

Started by johWolf

1 Oct 11
Reply by johWolf


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