Questions tagged [sensor]

For questions about drone sensors, sensor uses and any issues encountered with using specific sensors

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8
votes
3answers
91 views

Is there an open source video processing/sensor based follow me technology?

I'm constructing a multirotor drone and want to introduce follow me feature, are there any open source solutions I can use for that purpose? Please note that I want the tracking algorithm to be ...
7
votes
2answers
84 views

Difference between a 3 and 6 axis gyro

When shopping for drones, I see a 3 and 6 axis gyro available, what is the difference between the two? Does one have a advantage when flying over another?
7
votes
2answers
250 views

What does the full scale range in a IMU MPU9250 datasheet signify?

I have MPU9250 IMU, which I am working on to get orientations from the sensor output data. While exploring the MPU9250 (also other sensor such as BNO055) datasheet I came across the full scale range ...
7
votes
2answers
105 views

What are the usual engineering considerations for a UAV current sensor?

Current sensors are a popular feature in both multicopter and fixed wing flight control stacks. Most of them are analog, i.e. convert the current into a voltage using a small-value shunt resistor (...
5
votes
2answers
38 views

Optical sensors vs Ultrasonic sensors on a drone

Are there any performance differences between optical sensors and ultrasonic sensors? How do I make the right choice for my drone? I will be using them in a object detection system for collision ...
4
votes
1answer
25 views

Estimate position of a balloon attached to a quadcopter

I'm trying to measure/estimate the position of a balloon, for that I need the two angles shown in the picture below. enter image description here The idea is to place a helium filled balloon on a ...
4
votes
1answer
34 views

What are controllers of Parrot AR drone 2?

I have a few questions about Parrot AR drone 2. Here is the official website Q1:What are the controllers for the AR drone 2? Is there a position controller (GPS), velocity controller (accelerometer), ...
3
votes
0answers
23 views

What is the frame system defined for Orientations comptutation using Quaternions [Madgwick filter/ Mahony filter]?

I am working with MPU9250 and I have implemented attitude & heading reference system based on Madgwick/Mahony filter. I capture the raw data [accel, gyro, mag] and pass to the Madgwick filter in ...
2
votes
0answers
38 views

Using MPL3115A2 to get relative altitude of a drone

I am using MPL3115A2 Altimeter to get the accurate relative altitude of my drone. I am getting an error of 30-60 cm without even moving the sensor. I have used several averaging and filtering methods ...
1
vote
0answers
31 views

Is roll rate, pitch rate and yaw rate same as gyro data along y-axis, x-axis and z-axis

As per the title, I want to understand if the roll rate/pitch rate/yaw rate are same as the data obtained from mpu9250 gyro sensor along y-axis, x-axis and z-axis? If not then how to calculate roll ...