Re: [Gumstix-users] autonomous quadrirotor

[Michael C. <mi...@ca...>]

to bad the english pages are ont in english.  looks interesting.


----- Original Message ----- 
From: "Juergen Quade" <qu...@hs...>
To: "General mailing list for gumstix users." 
<gum...@li...>
Sent: Friday, August 31, 2007 2:08 PM
Subject: Re: [Gumstix-users] autonomous quadrirotor


> On Fri, Aug 31, 2007 at 07:30:25PM +0200, Jean-Christophe Hu wrote:
>> Hi,
>> On the side of my master in Pattern Recognition and Intelligent  Systems,
>> I'm planning an autonomous quadrirotor helicopter, with a gumstix as the 
>> main IA controller.
>>
>> I have used a gumstix plus FPGA before as part of a wheeled robot, but 
>> the weight constraints were not as severe so I'm not actually certain its 
>> possible. Would you have some advice on how to realise such a system?
>>
>> It will need to control at least 4 brushless motors through dedied 
>> controllers,  connect to various range sensors and an inertial sensors 
>> probably trough microcontrollers, have GPS capability, and wireless 
>> connection. For the wireless I'm thinking of wifi but I am not sure it 
>> will work over 50-100m, so I maybe going for a zigbee module or radio. 
>> The gumstix itself wil probably have some video analysis plus 
>> localisation and mapping tasks on top of its autopilot role.
>>
>> The constraints on weight, size and power consumption are serious, since 
>> it will have to fit on the helicopter and I'm aiming for a whole system 
>> mass of less than 1kg incuding the batteries, for 15min flight time. The 
>> motors and structure alone take around  4 to 500g...
>
> We are constructing a "flying robot" as well (based on a
> quadrocopter). For the flight-platform we use the Mikrokopter
>        http://www.mikrokopter.de
> The flight-control (an atmega based board, responsible for the
> flight attitude) is connected via a serial adapter to our gumstix;
> the gumstix communicates to our remote control (notebook) via wlan.
> We completed our first flights and the wlan-connection worked pretty
> well.
>
> Our flight ready platform weights a littlebit above 1kg, but it
> won't be to hard to get it under 1kg (smaller structure). The
> Mikrokopter has a flight time up to 20 minutes, depending on the
> weight and the type of batteries you use.
>
> Need more infos?
>
>         Juergen Quade
>
>>
>> PS: Where can I find the weight specs for the gumstix and
>> extension boards?
>
> You will find this information somewhere in the specs. Was it 8g for
> the verdex-board?
>
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