• Male
  • Clarksburg, MD
  • United States

Harry's Friends

  • Martin Crown
  • Wallace Carvalho
  • Victor Sinatra II
  • Jean-Sébastien
  • Simon Atkinson
  • Charles lakins
  • Jeff Smith
  • UnmannedTechShop.co.uk
  • Jean-Louis Naudin
  • Anwar Ali Khan
  • Dr Mike Black
  • Greg Fletcher
  • Petr Hubacek
  • Brian
  • wayne garris

Harry's Discussions

Artificial Horizon in processing 2.0

Started this discussion. Last reply by Harry Jan 14, 2014. 6 Replies

Using Quaternions

Started this discussion. Last reply by Harry Sep 30, 2013. 3 Replies

Harry's Groups


Harry's Page

Latest Activity

Harry replied to Ahmed Hossam Helal's discussion Bad Fast rotation effect for Arduimu, MPU6050, 9150, 9250
"That's an awesome explanation of many things involving IMU's."
Apr 27
Harry commented on Gerard Toonstra's blog post Cheap 1-2cm (scale) accuracy for your surveys
"I've seen raw L1 GPS processed a long long time ago.  What I remember was it was statistically intensive with many steps like manually looking for outliers, ionospheric stuff based on station meteorlogical observations, keep weeding out…"
Apr 22
Harry commented on Chris Anderson's blog post A tribute to the hacker origins of MultiWii
"I do like Multiwii.  The only serious problem I ever had was when I had too much beer and wrong model selected on the transmitter.  I asked for a bug fix on that and decided to put a breathalyzer on the…"
Apr 20
Harry posted a discussion

I'm still playing with DCM

I burned out my ArduIMU V3 and still want to play so I took my flip1.5 with the MPU6050 and created a Frankenstein version of the 3DR ArduIMU1.9 code.  I got rid of the fastserial headache and used FreeIMU to initialize and retrieve the sensors over i2c, using the arduino 1.0.3First problem I had was the orientation of the sensors is different from the ArduIMU, so I had to make several trials before I had a clue how to fix it.  I changed the order of how the ADC tab reads in the sensors and…See More
Apr 16
Harry commented on Thomas J Coyle III's blog post Scientists Using Drones To Map Ocean Trash
"It's pretty sickening but if you know where it is, then you Can clean it up.  I call that a real environmental crisis with a real solution vs. the Global Warming we've added 1 ppm of 4 ppm of whatever naturally occurring…"
Apr 16
Harry commented on Dave Giles's blog post Drone delivering asparagus to Dutch restaurant crashes and bursts into flames
"My Dutch is limited to near cognates with English, but this video gave me a laugh when I managed to hear them say "roasted asparagus".   ...And then the guy blowing on the wreckage like he might actually be able to put it out by…"
Apr 16
Harry commented on Paul's blog post US NAVY Sonar/Lidar Editing Software Released To the World
"I might dig into that code and see what I can learn.  I bet there's some real gems in there."
Apr 6
Harry commented on Jure M's blog post ESC with FOC and sensor - why not
"This is cool beans.  The explanation of FOC reminds me of a project someone had that involved a single rotor with a geometrically tricked out rotor.  His code needed to know rotor position to know when to alter PWM.  I wish I had…"
Mar 30
Harry commented on Chris Anderson's blog post First look at Ascent coaxial pocketcopter
"Awww shucks, if it doesn't hold my coffee too than it's wasting space. ;)"
Mar 27
Harry commented on Chris Anderson's blog post 3DR announces DroneKit, a full-featured SDK for drones, mobile and cloud
"Man, this place is blinding me.  Looks like I will advance or die like a dinosaur stuck in a tar pit."
Mar 26
Harry commented on Harry's blog post For Those Who Like Simple
"I avoided all the Spektrum headaches by converting a JR 6102 to FrSky.  That has been flawless in my experience and I still get all the cool computer radio features.  You could probably convert a Spektrum to FrSky and then just…"
Mar 23
Harry commented on Mustafa TULU's blog post Flight Monitoring Via Smart Watch
"Gotta admit that attitude indicator on a wrist has the cool factor.  Add the useful functions already mentioned and I might just want a smartwatch."
Mar 23
Harry commented on Andy Brown's blog post iDroneCtrl 1.3.0: iPhone/iPad drone control app update
"That's very nice! "
Mar 22
Harry replied to Khalid Saeed's discussion FreeIMU, how to get gyro rates and accelerometer reading
"I added this line to FreeIMU.cpp : accgyro.setFullScaleAccelRange(MPU60X0_ACCEL_FS_4);  The idea was to set the accel to +/- 4g, so that It would match how the ArduIMU 1.9.8 sets the accels.  I then used FreeIMU to initialize an MPU6050…"
Mar 21
Jack Brisbin commented on Harry's blog post For Those Who Like Simple
"I had just read that the other day about changing the 3DR radio settings for Multiwii. From what I understood, someone had written an entirely different radio firmware to make it work on the multiwii. I will try what you have above. The multiwii…"
Mar 19
Harry commented on Harry's blog post For Those Who Like Simple
"One more thing that might help once you get connected.  I opened the 3DR radio config tool(link found on 3DR store)and hit load settings to see how my radio was setup.  Initially it was setup to read MavLink and multiwii serial protocol is…"
Mar 19

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Harry's Blog

For Those Who Like Simple

Posted on March 15, 2015 at 10:57am 12 Comments

I bought a 3DR radio from Whitespy to add telemetry to my MultiWii and it works like it should.  Multiwii has a processing program called multiwiiconf that is used to make changes to the PID's and for selecting flight modes and reading and writing to EEPROM.  There is also a slick GUI that adds a few more…


Flying my ArduIMU in tri_chord space

Posted on February 5, 2014 at 6:00pm 0 Comments

I haven't flown much of anything because of the weather, so I decided to see if I could do something different with my ArduIMU.  I decided that if I could get a MIDI port to read the IMU, I might be able to make music.

I used a VBscript to read the serial port and send pitch data from the ArduIMU to a slot.  I then used a MIDI program to record the…


The Next Sensor was Invented by Vikings

Posted on March 11, 2013 at 4:00am 2 Comments

There have been discussions before calling for reliable and accurate alternatives to GPS. The Vikings may have had the answer without knowing the physics. They were adept navigators at latitudes where frequent cloudiness and low sun angle(winter) could have made direct observation of the sun difficult. Legend has it that they had a magic stone, called a…


My Ardupilot(legacy) Platform

Posted on May 24, 2012 at 8:41am 8 Comments

Here's the plane I will install my Arduimu and Ardupilot(legacy) into.  I still need to build a motor mount and wind the motor.  It should be stable as it is based on a previous version which was very stable.  I'm aiming for 10-12 ounces AUW and around…


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