Brian Hudson
Brian Hudson
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  • Kirkland, WA
  • United States
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Brian Hudson's Discussions

uBlox acting funny - incomplete UBX messages interspersed with regular ones

Started this discussion. Last reply by Chris Anderson Sep 28, 2009. 1 Reply

Arduino Matrix / Vector library

Started this discussion. Last reply by Colin Sullivan May 17, 2010. 6 Replies

 

Brian Hudson's Page

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Colin Sullivan replied to Brian Hudson's discussion 'Arduino Matrix / Vector library'
Cool, thanks a lot to both of you for the help!
May 17, 2010
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will y. replied to Brian Hudson's discussion 'Arduino Matrix / Vector library'
Colin: I have done what you are saying and here's what you need to do to get the compiled ".hex" file. In fact, I wrote a tutorial for doing this exact thing using ArduinoISP, but I'll just cut out the part on how to get a .hex…
May 15, 2010
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Mark Colwell replied to Brian Hudson's discussion 'Arduino Matrix / Vector library'
I added this code for my modified ArduIMU v1.5 with I2C and Air_Start on pin D8 #if BOARD_VERSION == 3 // For v1.5 with !2C mod //mjc A4(SDA), A5(SCL) are now I2C uint8_t sensors[6] = {0,2,1,3,7,6}; // Use these two lines for Hardware v1.5 (w/…
May 15, 2010
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Colin Sullivan replied to Brian Hudson's discussion 'Arduino Matrix / Vector library'
I program the Atomic with a USBtiny programmer and avrdude. I think I will compile with the Arduino IDE and try to load to the binary with avrdude from the command line. I've never tried that before but I expect it will be pretty…
May 15, 2010
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Mark Colwell replied to Brian Hudson's discussion 'Arduino Matrix / Vector library'
Jose has recently released a AT168 version of "DCM" for ArduIMU V2 it should be possible to port. 1, Add an option to select a Sf Atomic mode. 2, Define correct gyro and accel input pins. 3, then add SENSOR (-1,1,-1,-1,1,-1) in correct…
May 14, 2010
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Colin Sullivan replied to Brian Hudson's discussion 'Arduino Matrix / Vector library'
If you want generic functions for doing matrix operations, then I suggest lifting them from the Sparkfun 9dof IMU DCM source code or ArduIMU or somewhere. I haven't found a downloadable library for those funcitons either. I noticed in your…
May 13, 2010
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Abhishek Jain left a comment for Brian Hudson
Hello Can u send me a circuit diagram of your connections from the SF IMU to the Arduino. I am having a problem. Am not able to get the pinout for the z-sensor. And can u post a better photograph of your Arduino+IMU…
Oct 5, 2009
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Chris Anderson replied to Brian Hudson's discussion 'uBlox acting funny - incomplete UBX messages interspersed with regular ones'
Ever since I switch to uBlox my navigation has stopped working, so I think there is indeed something wrong with the latest code rev. I've pinged Jordi to see if he can find the bug.
Sep 28, 2009
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uBlox acting funny - incomplete UBX messages interspersed with regular ones

Tom and I just got our uBlox5 combo, and I hooked it up to my arduino as a Serial passthru using NewSoftSerial, with the built in and software port running at 38400. At first I thought I'd go ahead and port the parsing code from the arduPilot to run on my PC so I could get a good feel for what was going on.First - in the version of arduPilot I downloaded (2.31 I think), I think there may be a bug. The checksum seems to have an odd condition check on line…See More
Discussion posted by Brian Hudson Sep 27, 2009
1 Comment
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Abhishek Jain left a comment for Brian Hudson
hello i know its been long. I have finally figured out the PID control loop for the motors and the pinouts for the x,y axis of the accelerometers. Have only one problem. Don't know how to get the output from the z-axis of the accelerometers.…
Sep 3, 2009
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Abhishek Jain left a comment for Brian Hudson
Namaste How do i convert the gyro readings to angles. I have mapped the functions between -300 to 300 on my Arduino alpha. Pls help out Thanks Abhishek
Jun 8, 2009
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Abhishek Jain left a comment for Brian Hudson
hello again Do you know the exact weight of the Atomic IMU thanks in advance abhishek
Jun 6, 2009
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Abhishek Jain left a comment for Brian Hudson
i got that part abt connecting to the xbee socket. you are using the analog I/O pins and connecting it to the arduino,, ryt??
Jun 6, 2009
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Abhishek Jain left a comment for Brian Hudson
also wat abt the part where they have mentioned in the atomic datasheet that we are not supposed to connect the imu to a rs232 line.(probably due to high voltage)..
Jun 6, 2009
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Abhishek Jain left a comment for Brian Hudson
hi Brian.. Thanks for the early reply.. I was thinking of just using the output from the three gyros and connecting the 'Out', 'Gnd' & '3.3v' pins directly to analog inputs of arduino. Wat do 'PD' and…
Jun 6, 2009
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Brian Hudson left a comment for Abhishek Jain
Well I wouldn't encourage you to cut off your ATMega if that's what you implied you were going to do like me. The ATMega on the IMU can be reprogrammed using the ISP connector on the board (a 2x3 set of holes which you'll need to…
Jun 6, 2009

Brian Hudson's Blog

Brian Hudson

Platform progress

Posted on April 8, 2009 at 11:51pm 3 Comments

Tom and I have made a couple of decisions and are moving forward.



"I would not be just a nothin' my head all full of stuffin'

...

If I only had a brain."



I purchased and have received a standard Arduino Duemilanove board. I strongly considered the ArduPilot, but I wanted to get up an running quickly and I didn't really want to spend the money for an FTDI Serial / USB cable. I've been doing some basic bootstrapping to get a few things up and… Continue
Brian Hudson

Dreaming of wings

Posted on March 31, 2009 at 10:24pm 3 Comments

My name is Brian Hudson. I've been wandering around DIY for a week or two now, and I've decided to start this blog to start interacting with the community, get feedback, and to track progress and thoughts on a project my neighbor and I are starting.



My background is in Computer Engineering and Computer Science and I've worked in the software industry for several years now. My neighbor has a degree in Aeronautical Engineering, and we’ve been talking for awhile about a UAV… Continue

Comment Wall (8 comments)

At 8:12pm on June 5, 2009, Abhishek JainAbhishek Jain said…
hey Brian

Thanks a ton for the info u gave i'll definitely try it today. And no, I have not loaded my own code onto the IMU. Still using the default firmware. I am an undergraduate and totally new to all this. So can u also tell me how to load my own code onto the IMU. I want only the gyro reading passing through the Kalman filter. So pls cann u help me with that.

thanks again
Abhishek
At 9:27pm on June 5, 2009, Abhishek JainAbhishek Jain said…
hi Brian..
Thanks for the early reply..
I was thinking of just using the output from the three gyros and connecting the 'Out', 'Gnd' & '3.3v' pins directly to analog inputs of arduino.
Wat do 'PD' and 'ST' pins indicate??
i would really appreciate if u cud send a picture of ur imu setup with the arduino..
you can simply mail me on agarwal_apoorv_bits@yahoo.com

abt coding stuff, we have a previous experience of working in a couple of competitions and all..
so not a very big problem modifying the source code..
we have a isp programmer for avr.
we are uising winavr 2008 software..

we are a team of 4 members.
all from the same engineering col.. we are pursuing degree in chemical and (two of us in) electronics and mechanical..


thanks a lot again...
Abhishek
At 9:39pm on June 5, 2009, Abhishek JainAbhishek Jain said…
also wat abt the part where they have mentioned in the atomic datasheet that we are not supposed to connect the imu to a rs232 line.(probably due to high voltage)..
At 9:41pm on June 5, 2009, Abhishek JainAbhishek Jain said…
i got that part abt connecting to the xbee socket.
you are using the analog I/O pins and connecting it to the arduino,, ryt??
At 11:10pm on June 5, 2009, Abhishek JainAbhishek Jain said…
hello again

Do you know the exact weight of the Atomic IMU


thanks in advance

abhishek
At 1:54am on June 8, 2009, Abhishek JainAbhishek Jain said…
Namaste

How do i convert the gyro readings to angles.

I have mapped the functions between -300 to 300 on my Arduino alpha.

Pls help out

Thanks
Abhishek
At 11:52am on September 3, 2009, Abhishek JainAbhishek Jain said…
hello

i know its been long. I have finally figured out the PID control loop for the motors and the pinouts for the x,y axis of the accelerometers. Have only one problem. Don't know how to get the output from the z-axis of the accelerometers. Can't get the pinout except the pin on the ATmega. Don't want to use it for fear of wrecking the ATMega. Can u tell me how to get the analog reading for only the z-xis

Pls tell me at the earliest

Thanks
At 9:45pm on October 4, 2009, Abhishek JainAbhishek Jain said…
Hello

Can u send me a circuit diagram of your connections from the SF IMU to the Arduino. I am having a problem. Am not able to get the pinout for the z-sensor. And can u post a better photograph of your Arduino+IMU setup.

Thanks
AbhishekHello

Can u send me a circuit diagram of your connections from the SF IMU to the Arduino. I am having a problem. Am not able to get the pinout for the z-sensor. And can u post a better photograph of your Arduino+IMU setup.

Thanks
Abhishek

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