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Offline benjiTopic starter

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Re: a SoR project for all
« Reply #120 on: May 15, 2008, 02:15:18 AM »
Quote
Has anyone gotten started on their article yet?
not me ,, now im  very busy with my final year project (a hexapod) and the exams are 2 weeks from today
so ill do all the SoR stuff once i finish my exams
good ol' BeNNy

Offline TrickyNekro

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Re: a SoR project for all
« Reply #121 on: May 15, 2008, 02:38:17 AM »
Me nop... five days to exams...

Also, if samples from analog arrive I'll be doing a autopilot system...
Get a hold on...


Cheers,
Lefteris
For whom the interrupts toll...


P.S. I've been inactive for almost a year... Don't give promises but I'll try to complete my tutorials. I'll let you know when..

Cheers!

Offline superchiku

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Re: a SoR project for all
« Reply #122 on: May 15, 2008, 06:32:32 AM »
me also not started working for the $200 robot contest , trickynekro autopilot using what??
JAYDEEP ...

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Offline TrickyNekro

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Re: a SoR project for all
« Reply #123 on: May 15, 2008, 07:25:50 AM »
me also not started working for the $200 robot contest , trickynekro autopilot using what??

A dual rotor coaxial helicopter...

It's a little bit fat dream but with work I'll get to it...
I already have some gyros and I wait for the accelerometers...
Also I'm thinking of buying STK600 or AVR dragon... Probably the STK...
Although I haven't searched for pricing for the STK1000 it's probably gonna be too expensive...
And I'm not interested in AVR32 yet... I want to see what the AVR16 (ATxMEGA series) got to offer...
Surely the 32MHz speed well suit my needs for the autopilots since I saw autopilot with adruino...

And I also need a oscilloscope...
A guy can give me his old Tektronix for 500E... It's still a very good price and it's in good shape too... (I know the guy
and he hasn't really used it too...) (and he said that particular model was used in US military some years before...)
It's at 100MHz so I still think it's good... perhaps I'll lower the price too... I'm tough at trading... :P

And I will also intro myself to Eagle 5.0. There aren't many differences but it's hell more pleasant to use...

Also I'm thinking of buying a drill and a UV lamp for my boards...

You see if I get to university I'll do some serious business and I'll really need many stuff like this...
So... I gotta spent some money first to improve the quality of my work first...

Cause I really only run on a inexpensive but at least good multimeter right now...
First of all I got to go get gfs, some rest, some Aegean isles wind and some sun,
some gym practice first of all, some drinks, perhaps a motorbike... 8) and of course a job... part time....
Hell all that in a summer... puff... I need rest... someone spear me... :'(

I know you don't really mind about all these stuff... :D but I gotta tell someone anyway... ::)

So... Cheers...
Lefteris...

BTW... I need rest.... :P :P :P :P :P
« Last Edit: May 15, 2008, 07:30:01 AM by TrickyNekro »
For whom the interrupts toll...


P.S. I've been inactive for almost a year... Don't give promises but I'll try to complete my tutorials. I'll let you know when..

Cheers!

Offline superchiku

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Re: a SoR project for all
« Reply #124 on: May 15, 2008, 09:11:38 PM »
trickynekro i also thought earlier of working on an autonomous helicopter but there are problems , u see some of my seniors made this project which was rc not autonomous and they had much difficulty controlling it , if U want i am also interested in such a project may be we can share our ideas and all but my suggestion it make it semi automatic coz if anything goes wrong on the top while ur testing it then say bye bye to everything.. by the way if u are using the accelerometer then it i sufficient to give u tilt , acceleration and angle wrt gravity then why are u using a gyrometer?
« Last Edit: May 15, 2008, 09:22:53 PM by superchiku »
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Offline benjiTopic starter

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Re: a SoR project for all
« Reply #125 on: May 16, 2008, 04:23:26 AM »
just a question about this helicopter thing,, are you guys tottaly aware of FLYING?
i mean the aeromechanics,, how much should you push air?,,,,aero stuff in general,,any studies about that?
good ol' BeNNy

Offline TrickyNekro

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Re: a SoR project for all
« Reply #126 on: May 16, 2008, 06:54:47 AM »
just a question about this helicopter thing,, are you guys tottaly aware of FLYING?
i mean the aeromechanics,, how much should you push air?,,,,aero stuff in general,,any studies about that?

Me nope... But I got some RC heli flying hours...

The first step is to learn how to counter counter-rotation with a gyroscope...
Here I need some libraries for Eagle... (any help here????)
I'll be using the ADIS16100ACC... And I don't have a board for it... I must build it...

Then I do studying how to hold position by a dual axis accelerometer.

I also know some physics on the helis... how torque is produced, and generally how stuff works...
And I'll be doing also more and more research...

If anyone can offer more help he is more than welcome...

Lefteris
For whom the interrupts toll...


P.S. I've been inactive for almost a year... Don't give promises but I'll try to complete my tutorials. I'll let you know when..

Cheers!

Offline superchiku

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Re: a SoR project for all
« Reply #127 on: May 16, 2008, 08:45:27 AM »
i cant offer u help but iam also thinking of making such a thing if u want we can share some theories do some research together and make the thing what u say
JAYDEEP ...

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Offline benjiTopic starter

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Re: a SoR project for all
« Reply #128 on: May 16, 2008, 09:03:44 AM »
well good luck with that ,,expect too many crashes,, how big the helli is gonna be?how much weight?
good ol' BeNNy

Offline Private Reid

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Re: a SoR project for all
« Reply #129 on: May 16, 2008, 06:05:50 PM »
Wait a second?

I havn't posted here in while, but that doen't mean i havn't been reading


How is making a helicopter KEEPING IT SIMPLE?
This Post was proudly donated by Sam.

Offline superchiku

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Re: a SoR project for all
« Reply #130 on: May 16, 2008, 11:14:38 PM »
makin a helicopter isnt simple at all and making a autonomous one is ultrakill , there are lots of risks and difficulty involved also the cost factor is high that is why i am not making it mainly because of the cost but if tricknekro wants to do it then why not help him may be we can make it together
JAYDEEP ...

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Offline TrickyNekro

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Re: a SoR project for all
« Reply #131 on: May 17, 2008, 01:09:25 AM »
well good luck with that ,,expect too many crashes,, how big the helli is gonna be?how much weight?

Small and agile able to hold some batteries and the boards... The batteries usually come pre-installed and the boards
are light so no worries here...

To make this clear... total autopilot is not an overkill but it's very difficult and I would need much budget for sensors...
I was talking about a co-pilot autopilot... or at least some systems that would help you from crushing...
And maybe I will also involve some simple sensors for object detection...

And the remote and the receiver will be made by me and only... I guess a lot of people would like that!!!

Anyways... I have nothing more to say....

Cheers,
Lefteris...
For whom the interrupts toll...


P.S. I've been inactive for almost a year... Don't give promises but I'll try to complete my tutorials. I'll let you know when..

Cheers!

Offline superchiku

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Re: a SoR project for all
« Reply #132 on: May 17, 2008, 10:03:51 AM »
hmm are u using an already made chassis of a toy helicopter ??? then  think it wone be very difficult but if u want full automation then iam interested in it ..
JAYDEEP ...

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Offline TrickyNekro

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Re: a SoR project for all
« Reply #133 on: May 17, 2008, 01:06:59 PM »
hmm are u using an already made chassis of a toy helicopter ??? then  think it wone be very difficult but if u want full automation then iam interested in it ..

Not a toy... a full RC cause in toys you can't find pitch control and such...

And every single electronic part will be made by me...
And also not full automatic... you see still I need a GPS and such things... making it quite difficult...
cause of limited budget...


I'll see man... I'll see and do alike...
You see I mostly need help with parts, especially finding them...


Lefteris
For whom the interrupts toll...


P.S. I've been inactive for almost a year... Don't give promises but I'll try to complete my tutorials. I'll let you know when..

Cheers!

Offline superchiku

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Re: a SoR project for all
« Reply #134 on: May 17, 2008, 10:46:39 PM »
yes gps will be very costly also u need to learn how to use them, not good if u have limited time but if not fully automatic then i think ull be able to achieve it.... also i want to lern abt the electronics ur going to use if u need any kind of research just tell me i can get them for u
JAYDEEP ...

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Offline benjiTopic starter

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Re: a SoR project for all
« Reply #135 on: May 18, 2008, 02:57:00 AM »
is it totally autonomous or remotly controlled?
good ol' BeNNy

Offline TrickyNekro

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Re: a SoR project for all
« Reply #136 on: May 18, 2008, 05:02:12 AM »
semi autonomous...
Some control will exist in first states... it's impossible not to...
Then it comes automatic take off and most importantly landing...

And final stage will be way pointing with GPS...

And all these will for the SoR contest...


To ADMIN:
I know member pages are not for blog like situations BUT... That project can only be completed in stages...
So as far as I have a stage done, I will provide dates, how to, building info, coding info, physics info general info, how I got the parts and so on...
I may also provide my real name here cause it's obvious this project is nice to be heard of... (no contact info)

But I insist on stage like project appearance, cause the whole thing is very complicated...
I wait for confirmation....


Lefteris
« Last Edit: May 18, 2008, 05:04:00 AM by TrickyNekro »
For whom the interrupts toll...


P.S. I've been inactive for almost a year... Don't give promises but I'll try to complete my tutorials. I'll let you know when..

Cheers!

Offline superchiku

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Re: a SoR project for all
« Reply #137 on: May 18, 2008, 07:05:35 AM »
gps waypointing will be cool may be u can make a tutorial abt it after u complete it
JAYDEEP ...

IT AND ROBOTICS ENGINEER

"IN THE END IT DOESNT EVEN MATTER"

Offline airman00

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Re: a SoR project for all
« Reply #138 on: May 18, 2008, 07:17:00 AM »

To ADMIN:
I know member pages are not for blog like situations BUT... That project can only be completed in stages...
So as far as I have a stage done, I will provide dates, how to, building info, coding info, physics info general info, how I got the parts and so on...



Why?

It should be written like any tutorial , take the 50 dollar robot tutorial as example. Remember the tutorial should have a focus on the program aspect of it , and only a bit of background info to understand the concept , for the robot itself
Check out the Roboduino, Arduino-compatible board!


Link: http://curiousinventor.com/kits/roboduino

www.Narobo.com

Offline TrickyNekro

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Re: a SoR project for all
« Reply #139 on: May 18, 2008, 08:54:49 AM »

To ADMIN:
I know member pages are not for blog like situations BUT... That project can only be completed in stages...
So as far as I have a stage done, I will provide dates, how to, building info, coding info, physics info general info, how I got the parts and so on...



Why?

It should be written like any tutorial , take the 50 dollar robot tutorial as example. Remember the tutorial should have a focus on the program aspect of it , and only a bit of background info to understand the concept , for the robot itself


You really think this can be done with such a project... You know how many things will be missing that way...
And how didn't liked the big spider bot video series (BTW I haven't seen any movement so far... Am I missing something???)

I won't be chatting I know what to do...
But this can't come in a package... It's impossible both for the writer and the reader...

The further the steps go the further will the difficulty be...
Mounting electronics as first steps....
battery management...
microcontroller communication...
gyroscope interface...
accelerometer interfacing...
countering the heli's natural torque...
controls interface...
tests... ( that's unavoidably gonna be blog like)
coding...
advanced coding....
way pointing...
battery consumption and travel distance...
advanced way pointing...
RC remote building...
take off...
landing...
proper place for landing...
tree detection...
videos...
videos...
videos...


Lots of work to do...

Lefteris
For whom the interrupts toll...


P.S. I've been inactive for almost a year... Don't give promises but I'll try to complete my tutorials. I'll let you know when..

Cheers!

Offline airman00

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Re: a SoR project for all
« Reply #140 on: May 18, 2008, 08:59:40 AM »
ohh I see

You are absolutely right!

but for the other tutorials which deal with less complex robotics , they will not need that much.

Can't wait to see the heli

are you gonna make a quadracopter or just a regular heli?
Check out the Roboduino, Arduino-compatible board!


Link: http://curiousinventor.com/kits/roboduino

www.Narobo.com

Offline superchiku

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Re: a SoR project for all
« Reply #141 on: May 18, 2008, 11:19:01 AM »
making an helicopter isnt complex its just tough coz u have to do research in so many things , if trickynekro makes a semi autonomous one, ill be making a fully autonomous one coz i already have the idea and the required resources just needed some motivation
JAYDEEP ...

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"IN THE END IT DOESNT EVEN MATTER"

Offline benjiTopic starter

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Re: a SoR project for all
« Reply #142 on: May 18, 2008, 03:43:06 PM »
Quote
making an helicopter isnt complex
i think landing would be
good ol' BeNNy

Offline TrickyNekro

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Re: a SoR project for all
« Reply #143 on: May 18, 2008, 03:47:41 PM »
ohh I see

You are absolutely right!

but for the other tutorials which deal with less complex robotics , they will not need that much.

Can't wait to see the heli

are you gonna make a quadracopter or just a regular heli?

Actually I'm will to buy a coaxial dual rotor helicopter RC like the Russian KA-50 (NATO reporting Hokum) and mode it...
Buy I know a guy who plays a lot with RCs and may be able to give me a regular heli in a extreme low price...
I'll see...

And Yes that's a challenge a big one I know... but just imagine it crossing the skies...
For whom the interrupts toll...


P.S. I've been inactive for almost a year... Don't give promises but I'll try to complete my tutorials. I'll let you know when..

Cheers!

Offline TrickyNekro

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Re: a SoR project for all
« Reply #144 on: May 18, 2008, 04:03:36 PM »
Quote
making an helicopter isnt complex
i think landing would be

in fact landing may be more difficult than way pointing....
The helicopter not only must find an flat area to land and decent but also
it must check the surroundings... you see the rotors have mass... meaning
that if object exists in the way it may collide with blades even causing a crash...
for tackling this problem I'm aiming to use a heli to ground sonar... some trigonometry
and some sophisticated code...
And the bad thing is that can cost RAM and processing power...
And for better results in decent process I would need a accuracy 3 axis accelerometer...
But I think I'm good with a two axis one...

So that's for now...

Lefteris
« Last Edit: May 19, 2008, 03:21:13 AM by TrickyNekro »
For whom the interrupts toll...


P.S. I've been inactive for almost a year... Don't give promises but I'll try to complete my tutorials. I'll let you know when..

Cheers!

Offline benjiTopic starter

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Re: a SoR project for all
« Reply #145 on: May 19, 2008, 03:11:24 AM »
how is it gonna see whats infront? to not let it bump into a wall or somthin
good ol' BeNNy

Offline TrickyNekro

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Re: a SoR project for all
« Reply #146 on: May 19, 2008, 03:20:33 AM »
how is it gonna see whats infront? to not let it bump into a wall or somthin

Sonar or Sharp IR...
I have also read about optic flow but I don\t think it's practical outdoors....
And IR may have difficulties with the constant movement of the helicopter let alone the sun at outdoors...

But it's still an option for celling finding as the beam can pass through the spinning blades...
And generally quite many sensors.... if it's gonna be fully auto...

But first things first... tomorrow I start my exams finally... essay... pppoooffff....

Cheers,
Lefteris
For whom the interrupts toll...


P.S. I've been inactive for almost a year... Don't give promises but I'll try to complete my tutorials. I'll let you know when..

Cheers!

Offline benjiTopic starter

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Re: a SoR project for all
« Reply #147 on: May 19, 2008, 02:05:21 PM »
considering fast movement of the helli i dont think you have any time to do scans.. so the sensor should be stabely directed at one point,
the ir wont do it under the sun,, a sonar is better for this
good ol' BeNNy

Offline TrickyNekro

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Re: a SoR project for all
« Reply #148 on: May 19, 2008, 03:20:24 PM »
considering fast movement of the helli i dont think you have any time to do scans.. so the sensor should be stabely directed at one point,
the ir wont do it under the sun,, a sonar is better for this


I agree with ya... but I was talking about landing... the heli should be fixed in a position and then choose
if the position is correct to land... if not go elsewhere...

And a sonar with a accelerometer with do the job...
Consider the the Doppler effect and knowing the speed of the heli (or just something close...)
You just have the distance of the object ahead...

you see it's really all about physics and maths... so... don't really worry...
Budget is the big hit...

Lefteris
For whom the interrupts toll...


P.S. I've been inactive for almost a year... Don't give promises but I'll try to complete my tutorials. I'll let you know when..

Cheers!

Offline Admin

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Re: a SoR project for all
« Reply #149 on: May 25, 2008, 02:21:11 PM »
Ok I finally read this really really really really long post :P

The $50 Robot is a great starting point for tutorials, as its a common open source platform many of you already have. And you wouldn't need to write a tutorial for everything, just on your special module you made for your own uses.

Yea benji, you can do more than one entry to the contest. The ad revenue I make from your tutorials pays for the prize money, so more entries means I hold the contest more often. But its always better to have one really good tutorial instead of two so-so quality articles.

Quote
But I insist on stage like project appearance, cause the whole thing is very complicated...
yeap Tricky, as you start your article you can add as you go. But the final version should be clear for someone to copy your robot design.

oh and tricky, i got myself one of those RC helis . . . crazy hard to control . . . but then a gear broke like 15 minutes after i started using it =(  if you make something that mixes the RC signal with stability control, I think that'd be a good first step!

 


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