Mike Isted
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  • Monmouthshire
  • United Kingdom
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Teraranger not detected on Pixhawk/Arducopter

Started this discussion. Last reply by Mike Isted Jun 11. 1 Reply

I have recently purchased a Teraranger One with the i2c adapter cable.  It's all wired up and configured, but the sonar range on the Mission Planner flight display simply reads 0.Here are the things…Continue

Tags: i2c, teraranger

 

Mike Isted's Page

Latest Activity

Mike Isted commented on Thomas Stone's blog post NVIDIA's TX1 SoC now comes on a credit-card sized module
"I'm currently using a Raspberry Pi 3 communicating with the Pixhawk using Dronekit and opencv for feature recognition. I want to move towards the use of neural networks and consider the Pi somewhat limited for this purpose, despite its great…"
Jul 1
Mike Isted replied to Mike Isted's discussion Teraranger not detected on Pixhawk/Arducopter
"Ok so I was right to think I was missing something obvious! The 4 way DF13 lead I used to connect the rangefinder was connected pin-for-pin completely the wrong way round.  So a straight-through rather than a crossover.   Pulled out the…"
Jun 11
Mike Isted posted a discussion

Teraranger not detected on Pixhawk/Arducopter

I have recently purchased a Teraranger One with the i2c adapter cable.  It's all wired up and configured, but the sonar range on the Mission Planner flight display simply reads 0.Here are the things I have already checked/tried/configured:1. Correct power/polarity is reaching the i2c adapter and also onto the Teraranger board itself.2.  Supply comes from 4S battery, which also powers the Pixhawk.  So both are powered up simultaneously.3. Unplugged all other i2c sensors from Pixhawk (e.g. GPS),…See More
Jun 10
Mike Isted replied to Peter Skotte's discussion Connecting and controlling high-end gimbals through PPM/SBUS/CANbus via pixhawk
"Very interesting Andre. I am upgrading the servo gimbal on my Groundhog hexacopter, which requires the gimbal angles to be both controlled by software and ideally interrogated (via Dronekit.) Do you think the Storm32 might be the way to…"
May 29
Mike Isted commented on Chris Anderson's blog post Comparing two low-cost scanning Lidars
"Thanks Chris - this is very interesting. I'm just about to fit The Groundhog with lidar and your findings on the outdoor performance of the lidar lite are very pertinent."
May 29
Mike Isted posted a blog post

Groundhog Autonomous UAV - Going faster with sunglasses

The Groundhog is being developed to line-follow at low altitude and higher speeds.  This video is of the field testing taking the speed up to 1.75 m/s.  It also explains why the Groundhog now sports sunglasses.The TrackAn oval of 50mm red webbing, bends of radius approx 3m and straights of approx 15m. Testing took…See More
May 22
Mike Isted posted a blog post

The Groundhog UAV - Curved line following

It's been a few week since tests were conducted of The Groundhog line-following a straight red line.  The Groundhog was an entry in the MAAXX Europe 2017 competition and although it didn't win, the lessons learned are being implemented so that it can be more competitive next year.Time and weather have eventually converged…See More
May 14
Mike Isted commented on Mike Isted's blog post The Groundhog UAV Chronicles. Line following using velocity vectors - initial testing.
"Cheers Robert.  Hoping to post further video of it following curves in a week or so.  Looking to increase the velocity beyond 1m/s..."
Apr 25
Robert Hoermann commented on Mike Isted's blog post The Groundhog UAV Chronicles. Line following using velocity vectors - initial testing.
"Great job, might be interesting to follow pipelines in the future, who knows. Congratulations, Robert"
Apr 25
Mike Isted posted a blog post

The Groundhog UAV Chronicles. Line following using velocity vectors - initial testing.

Several lessons were identified here  from the entry of The Groundhog hexacopter in the MAAXX Europe competition earlier this year.Current developments are around correcting the issues so that we get a UAV…See More
Apr 24
Mun KK commented on Mike Isted's blog post Post 5. MAAXX Europe. Quaternions, control code and PIDs.
"Hi Mike!  This is so interesting that I feel like implementing it at home in my free time.  Do you have any videos? Will be good to see your drone in action :) "
Apr 13
Mike Isted replied to Khushal B's discussion Line follower project using a machine learning approach on Raspberry Pi and Pixhawk
"I think channel overrides are seen as an easy and effective way to do it - they also work indoors, so they work if you don't have gps.  Yes, Dronekit does mention they don't want to use them... So I think your choices are: 1. Channel…"
Apr 12
Mike Isted replied to Khushal B's discussion Line follower project using a machine learning approach on Raspberry Pi and Pixhawk
"For information, the winning UAV at MAAXX Europe 2017 used channel overrides."
Apr 11
Mike Isted replied to Khushal B's discussion Line follower project using a machine learning approach on Raspberry Pi and Pixhawk
"This is exactly what the MAAXX Europe competition is about.  My blog on this starts here and links to other resources to hook up a RPi 3 to a Pixhawk, using Dronekit and Python. Hope it helps :-)"
Apr 10
Mike Isted posted a blog post

Post 5. MAAXX Europe. Quaternions, control code and PIDs.

In this last post of the series I shall overview the main program including the control algorithms for the Groundhog.  Code is written in Python, using Dronekit and OpenCV all running on a Raspberry Pi 3.As we are flying indoors without GPS and also without optical flow, we are using quaternions to control the…See More
Apr 5
Mike Isted commented on Mike Isted's blog post Post 4. MAAXX Europe. Connecting the Pi 3 to the Pixhawk
"I posted this some while ago when I was using a Pi2 myself. Fig 18 shows the code segment.  Of course you do not need to worry about the bluetooth with a Pi2. I switched to a Pi3 using Dronekit to try to simply things somewhat.  With…"
Apr 2

Profile Information

About Me:
A specialist in digital education supporting schools in Powys, Wales. In whatever spare time I have between job, family and house, I develop my UAV platform to do challenging things autonomously.

My first degree is in Physics and Computer Science and I am currently enrolled with the Bristol Robotics Laboratory on a Masters by Research in Robotics.
Please tell us a bit about your UAV interest
I was bought up with RC cars and worked on embedded systems in my early IT career. I have always been a proponent of the make revolution and the democratisation of technology. Having children reintroduced me into the world of UAV and I haven't looked back.

My interest is primarily around autonomous control augmenting ground based humanitarian activities. However I have quickly learned that once you go beyond gps 'point and shoot' control, it gets a whole lot more interesting. And that's where my interest lies, just outside of the standard flying envelope, so to speak.
Hometown:
Usk

Mike Isted's Blog

Groundhog Autonomous UAV - Going faster with sunglasses

Posted on May 22, 2017 at 3:00pm 0 Comments

The Groundhog is being developed to line-follow at low altitude and higher speeds.  This video is of the field testing taking the speed up to 1.75 m/s.  It also explains why the Groundhog now sports sunglasses.

The Track

An oval of 50mm red…

Continue

The Groundhog UAV - Curved line following

Posted on May 14, 2017 at 9:00am 0 Comments

It's been a few week since tests were conducted of The Groundhog line-following a straight red line.  The Groundhog was an entry in the MAAXX Europe 2017 competition and although it didn't win, the lessons learned are being implemented so that it can be more competitive next year.

Time and…

Continue

The Groundhog UAV Chronicles. Line following using velocity vectors - initial testing.

Posted on April 24, 2017 at 2:37pm 2 Comments

Several lessons were identified here  from the entry of The Groundhog hexacopter in the MAAXX Europe competition earlier this year.

Current developments are around correcting the…

Continue

Post 5. MAAXX Europe. Quaternions, control code and PIDs.

Posted on April 5, 2017 at 9:29am 0 Comments

In this last post of the series I shall overview the main program including the control algorithms for the Groundhog.  Code is written in Python, using Dronekit and OpenCV all running on a Raspberry Pi 3.

As we are flying indoors without GPS and also without optical flow, we are using…

Continue

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