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Permalink Reply by Jack Crossfire on May 15, 2008 at 9:20pm

Not the easiest project, but writing it in CAPS may actually help.

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Permalink Reply by JAYDEEP GHOSE on May 16, 2008 at 1:34am

what do u exactly mean cant u help me??

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Permalink Reply by Chris Anderson on May 16, 2008 at 7:01am

I think Jack was policing punctuation and spelling. Anyway, you should check out his project, which is very sophisticated. Perhaps once you've done some reading there, you'll a more specific question.

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Permalink Reply by JAYDEEP GHOSE on May 16, 2008 at 10:27pm

Can You exactly give me the link of jack's project

Mr.Anderson what i want to do is to built a completely autonomous robot helicopter which can fly in the sky without getting itself damaged or hitting obstacles, It is pretty straight forward if i will work on this project then what exact materials ,electronics ,programming software do i need also do i need to have some basic knowledge in aerodynamics and what would be the approximate cost of making such a thing....

In short what basic knowledge i should have ...

PS:I am already an active robotist who has completed many ground robots will this knowledge of microcontrollers and electronics help me in my helicopter project???

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Permalink Reply by Chris Anderson on May 17, 2008 at 7:34am

For some reasons the link underlines aren't showing up (it was hyperlinked on "his project" in my comment. Anyway, here it is again: http://vicacopter.com/

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Permalink Reply by JAYDEEP GHOSE on May 17, 2008 at 9:33am

ok ill check it out

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Permalink Reply by wayne garris on May 17, 2008 at 11:57am

well ok how 'bout a real answer !!
gps modual for nav
stabilization system (either ir sensors or an imu(gyro + accelerometer))
some sort of rangfinder ie parallax ping of IR or even scanning laser rang finder
as far as microcontrollers go im partial to 32bit 50mhz+ and floating point math (makes complicated formulas a lot easier

and thanks to jack crossfire for being the grammer police as usualllllll !!!!!
;P

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Permalink Reply by JAYDEEP GHOSE on May 18, 2008 at 6:17am

i have ordered accelerometers and a range fnder but iam not sure abt using gyrometers,also i dont know how to use gps do u have any tutorials on using a gps and where can i buy them from??

findind a 32 bit 50 mhz microcontroller will be difficult , i dont think any avr microcontroller will be that powerful

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Permalink Reply by Chris Anderson on May 18, 2008 at 8:13am

If you Google around you will find plenty of tutorial on using GPS. As for the modules we like the EM406 and the GS405 from Sparkfun.

Jack uses a Gumstix and a high-end PIC for his heli. The most powerful chip we use on our fixed wings is the 8-core, 32-bit Propeller from Parallax.

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Permalink Reply by JAYDEEP GHOSE on May 18, 2008 at 9:07am

parallex processors are new to me do u think an avr running at 32mhz and 16 bit risc structure will be able to handle it?

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Permalink Reply by Chris Anderson on May 18, 2008 at 9:31am

I'm afraid I don't know. Heli's are perhaps the most challenging aerial robotics problem you can pick. Just watching Jack deal with the dynamics problems has given me great respect for the magnitude of this task--there's a reason why real helicopters didn't get autopilots until just a few years ago!

I hope you realize that you're embarking on a PhD-level job--it could take years and many thousands of dollars to accomplish. Are you sure you don't want to get your feet wet with something easier, like fixed wing aircraft?

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Permalink Reply by JAYDEEP GHOSE on May 18, 2008 at 10:25am

hmm i thought heli's will be easier than fixed wings , but i dont know abt any aerodynamics relating to fixed wings , will the same processor, sensor and gps work on a fixed wing

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