Andy Baker
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  • Swindon, Wiltshire
  • United Kingdom
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  • Nick Lannan

Andy Baker's Discussions

MPU-9250 magnetometer / compass

Started Jan 27 0 Replies

Hi I want to use the compass for two reasons:Getting the orientation of my pidrone prior to takeoff which combines with GPS, gives the ability to flying between fixed predefined waypoints.  This…Continue

Tags: Compass, Magnetometer, MPU-9250

Autonomous GPS tracking X8 piDrone

Started Jan 20 0 Replies

With a Raspberry Pi, running standard Raspian Linux, all coded in Python with 7 sensors (Accelerometer, Gyrometer, Magnetometer, down-facing LiDAR and RPi camera, GPS and Scance Sweep), my 5 year…Continue

Tags: Hermione, GPS, tracking, X8, piDrone.io/video

Recommended GPS receivers

Started Sep 2, 2017 0 Replies

Hi,I'm using off-the-shelf USB GPS receivers for my X8 Drone (pidrone.io); in some quick testing this morning, I'm getting somewhere between 4 and 7 satellites depending on which receiver I'm using;…Continue

X8 prop layout and control

Started this discussion. Last reply by Andy Baker Jul 7, 2016. 3 Replies

I'm considering building an X8.From what I understand so far, on a given arm, the top and bottom prop rotate in opposite directions - note I'm meaning the props themselves; the motors rotate in the…Continue

Tags: yaw, X8

 

Andy Baker's Page

Latest Activity

Andy Baker posted a discussion

MPU-9250 magnetometer / compass

Hi I want to use the compass for two reasons:Getting the orientation of my pidrone prior to takeoff which combines with GPS, gives the ability to flying between fixed predefined waypoints.  This works perfectly.Use it as a long term fusion with yaw angle integrated from the gyrometer.  This is the problem.The compass works accurately with the motors off, returning the direction it's pointing; however once the motors turn on, the compass shifts by up to 40 degrees, and varies depending on which…See More
Jan 27
Andy Baker posted a discussion

Autonomous GPS tracking X8 piDrone

With a Raspberry Pi, running standard Raspian Linux, all coded in Python with 7 sensors (Accelerometer, Gyrometer, Magnetometer, down-facing LiDAR and RPi camera, GPS and Scance Sweep), my 5 year from absolute ignorance proof of concept project is nearly done.Details here: http://www.pidrone.ioSee More
Jan 20

Profile Information

About Me:
Computer geek, Raspberry Pi fan building a quadcopter using the Pi as the controller
Please tell us a bit about your UAV interest
Using a RaspberryPi (rather than Aduino / Microcontroller) to make a quad
Hometown:
Latton

Comment Wall (2 comments)

At 2:34pm on June 5, 2014, Nick Lannan said…

Andy,

Thanks for reaching back out! Once we get one up and running here, I'll be able to help you with some of our successes and failures as well. I know it will be a challenge being on a non-real-time OS. Do you have a site where your source code is published that I would be able to download it. Also, if you want please let me know some areas that you are having issues with so if I run into them and get something working I can let you know!

Cheers,
Nick Lannan

At 10:50pm on June 5, 2014, Andy Baker said…

Hi Nick,

My code lives on GitHub under PiStuffing/Quadcopter - it's just a single python file qc.py.  I only updated it yesterday so you'll have the greatest.

I don't believe using Linux rather than a RTOS has adds any extra problems - I think it's just become belief you do by people who don't understand the details of the code.  The only thing needing real-time accuracy is the PWM for the ESCs, and the Raspberry Pi hardware supports that.

The only real problem I'm having at the moment is drift, and I'm starting to suspect that the main reason is that it's not really been done before autonomously - there's either a human or sensor based external feedback system to control it.

If you want to know more of what I've been up to, see www.pistuffing.co.uk.

Cheers,

Andy

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