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Achal Agrawal's Discussions

Navigation calculations??

Started this discussion. Last reply by Dan May 26, 2009. 4 Replies

Barometric Altimeter

Started this discussion. Last reply by Michael Zaffuto Mar 4, 2010. 7 Replies

SERVO CONTROLLER

Started this discussion. Last reply by Genesis Factor Jun 21, 2008. 3 Replies

 

Achal Agrawal's Page

Latest Activity

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Morli replied to Achal Agrawal's discussion 'Barometric Altimeter'
that would be fantastic Arthur. pls do let us know more info and details of the project.
Mar 4, 2010
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Dan replied to Achal Agrawal's discussion 'Navigation calculations??'
I know this is an ancient thread, but a great source for this is http://williams.best.vwh.net/avform.htm The PIC18 will definitely limit you to the flat-earth approximations.
May 26, 2009
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Sami Finnila replied to Achal Agrawal's discussion 'Navigation calculations??'
Treat the coordinates as coordinates on a flat surface. Really easy.. Here's an example (from my NXT AutoPilot): float tempHeading=0; float dX=(gpsLon-gpsLon_old); float…
Apr 16, 2009
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Michael replied to Achal Agrawal's discussion 'Navigation calculations??'
Chris following the link ends up with the: 'This site has been disabled for violations of our Program Policies. If you feel this disabling was in error, please visit our contact page to let us know. Contact Us' Is it available anywhere…
Apr 16, 2009

Profile Information

About Me:
I am an engineering student from India. My hobbies are aeromodelling and robotics.
Tell us a bit about your UAV interest
www.teamibrido.org
Hometown:
Udaipur, INDIA

Achal Agrawal's Blog

Achal Agrawal

Autopilot Board

Posted on June 24, 2008 at 6:40am 10 Comments

Comment Wall (4 comments)

At 8:39am on July 1, 2008, volkan samlivolkan samli said…
Dear Agrawal;

I am standing your news.

do you want to cooperation for a autopilot board ?

We are building completely UAV plan and ground station.
We are explore long distance communications systems.

Volkan SAMLI TA1DE
At 4:57pm on July 21, 2008, JesseJesse said…
Hi, you still working on the navigation algorithms? I've been doing the exact same research for both bearing and distance, and have found two of each that are very accurate. I'm using a PIC16F877 with a math co processor. I've got the formulas written and working in C right now, but I'll be writing in BASIC. -Jesse
At 3:43pm on July 24, 2008, JesseJesse said…
That's great to hear! I think I'd have an easier time if I was to use C for programming the pic. I've only used BASIC to do so. So with the PIC16F chips and BASIC combined, I'm having to use a math co-processor in order to do the floating point math. I'd like to use the PIC18F chips, but my compiler is slacking and hasn't adapted them yet. I guess it may be time to switch over to a better system!

I just received 4 infrared sensor chips from Chris Anderson on here, so looking forward to trying them out soon for stabilization. However, I would really like to make use of a more accurate gyro/accelerometer setup! ;-)
At 1:58am on July 27, 2008, Achal AgrawalAchal Agrawal said…
Hi! I would suggest you to use mikroC compiler for PIC18F. Programming in C language is not so difficult. I find it much better and powerfull than BASIC.

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