Questions tagged [sensor]

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

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1 answer
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Using BMP280 as an altimeter for CanSat

Situation: Me and my student team want to use a BMP280 air pressure sensor connected to an Arduino Nano to measure the altitude of a CanSat. A CanSat is a coca cola can-shaped and can-sized aerial ...
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3 votes
1 answer
154 views

Is it possible to attach I2C and USB based sensors to the flight controller and receive some outputs via telemetry?

Readily available flight controllers have pins/pads available usually for UART ports where you can attach various modules like ESC, RX, VTX, OSD etc. I wanted to know if it is similarly possible to ...
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2 votes
0 answers
32 views

How to implement sensor fusion with IMU and GPS

I have a 9-axis IMU (MPU9250) and a GPS module and I'm considering using other sensors later,...
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5 votes
1 answer
36 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 ...
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5 votes
1 answer
61 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), ...
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2 votes
2 answers
99 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 ...
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  • 441
8 votes
3 answers
116 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 ...
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3 votes
0 answers
35 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 ...
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  • 441
2 votes
0 answers
46 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 ...
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8 votes
2 answers
365 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 ...
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  • 441
7 votes
2 answers
225 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?
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5 votes
2 answers
96 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 ...
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7 votes
2 answers
204 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 (...
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