Harry
  • Male
  • Clarksburg, MD
  • United States
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Harry's Discussions

I'm still playing with DCM

Started this discussion. Last reply by Harry on Saturday. 5 Replies

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 Harry's discussion I'm still playing with DCM
"I played with the DCM integration time and added the magnetometer and the drift at steep bank angles went away.  Adding the magnetometer was a pain.  Getting it to read the mag was easy, getting it right was not.  My mag is oriented…"
Saturday
Harry commented on Chris Anderson's blog post Facebook releases photos of internet-access drone
"Nice platform for tracking trigger happy dentists?  Oh wait, that would be surveillance and google is only trying to provide internet with this flying wing, but they probably could put some goldfinger knockout gas thing on it and when it…"
Friday
Harry commented on Simon D. Levy's blog post Naze32 + Arduino + Buzzer = Krell music!
"I fed the pitch and roll from the IMU into a program written to work with a theremin.  There were different scales and I could move through them.  I recorded it in MIDI and then fed it through a music theory program that filtered…"
Jul 17
Harry commented on Simon D. Levy's blog post Naze32 + Arduino + Buzzer = Krell music!
Jul 16
Harry commented on Simon D. Levy's blog post Naze32 + Arduino + Buzzer = Krell music!
"Oh boy, I played with this idea myself a year or so ago with an IMU.  I won't post the links to soundcloud. ;) "
Jul 16
Harry replied to Harry's discussion I'm still playing with DCM
"I increased the bank to 30 degrees and an hour later its still holding.  I'll find the limit, but why and what is the problem?  Is it something in DCM or the MPU or a problem with the offsets in EEPROM? "
Jul 14
Harry replied to Harry's discussion I'm still playing with DCM
"I just tested it again.  This time I put it into a 15 degree bank and left it running for an hour and it held.  I then increased it to 45 degrees and it drifted in pitch and roll.  I put it back to level and it was fine.  The yaw…"
Jul 14
Harry replied to Harry's discussion I'm still playing with DCM
"I noticed a problem.  I have it mounted level and it will run for hours and never show a problem.....until.  Until I put it into a fixed bank of say 45 degrees and let it sit that way for several minutes.  What happens is it starts to…"
Jul 14
Harry replied to Harry's discussion I'm still playing with DCM
"Like I posted above, I'm using the ArduIMU v3 program with a board that uses i2c instead of spi and it works.  I'm working on using it as a stabilizer.  I've got it reading my rx and tried Servo.h to write to a Servo using…"
Jul 13
Harry commented on Simon D. Levy's blog post MSPPG: Multiwii Serial Protocol Parser Generator
"Yes, I'm using the AB Normal brain.  Dr. FrankenSteeen would have loved open source."
Jul 13
Harry commented on Simon D. Levy's blog post MSPPG: Multiwii Serial Protocol Parser Generator
"I want to be in that class, ha ha.  I could use the tutelage.  I'm experimenting with a simple stabilizer program to run on a 328.  I'm using parts of code from all over the place.  I took the…"
Jul 13
Harry commented on Simon D. Levy's blog post GooMPy: Interactive Google Maps for Python
"GmapCatcher is another python map program. "
Jun 29
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

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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…

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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…

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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…

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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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