UAV as Aerial Mapping & GIS platform

Continuing from my last post and hunting down the ever ending dream for "more" Skiptrovamon took a new form. This time our team goals was to keep the good things from our first airframe and..:

-Step on Known PIDs

-Make more room for cameras and FPV gear

-increase lift and decrease wing loading

-Follow DIYDRONES hardware update

-More movement-servo accuracy

-More endurance

-Eliminate image post processing


The results: 

At the current state you see this model on the below pictures, the wingspan is 2 meters and the weight is 700 gramms (24,5 ounches). Front fuselage is built up by styrofoam sheets , "boom" is built with balsa using some styrofoam frames, tail system is also styro sheets with small reinforcements and the wing is made out of white 25 Kg/cub.m. EPS foam reinforced of course as needed. The wing is also folding in the middle for easy transporation...

like Skiptrovamon I, our next model is sheeted with 1mm carbon fiber: 



-As you can see is much like a 2 meter skywalker, so ready made PIDs both for APM1 and APM2 work great.

-with 4s 2600mah we achieved 40 minutes flight time. 

-All up weight is 2,1 kg, incl. Cameras, APM, and FPV gear witch means it has less than 40gr/sdm wing loading!!

-Super steady even with 12,5m/s wind gusts

- 17km/h Stall speed!

- New digital high tourqe servos, consume less Amps (1,2a) and  give super precise movement

- APM will keep us up to date for a time

- Mission Planner wms and georeference tool, provides us a 20cm accurasy for calculations and stiching methods.Also i can export our results to both world or local Datum. 10000 thanks Michael. 

- For first time we can use geniuses like Penman for Spatial focal or even global computations instead of local.



-Even if its steady, and noise free, camera is triggered with a 9gr servo and without stabilization we have two issues:

A. Computer rutines must compute Omega Phi Kappa, witch means we need a powerfull ground station and expensive software like Erdas

B. everything described to this wonderfull post  and all the comments on wiki

-Manually i can bind image acquisition with log files but as i mentioned before, a text file with pitch, roll, yaw, baro and Nmea from the click moment  could make orthorectification completely auto. maybe a guide to transform log files to excel sheets could help

- Please someone clarify on the wiki if we can use our old GPS with APM2, beacause everything is inside fuselage now


Thank everyone working to this community for making dreams happen



I attach a setup senario for APM2  and iam waiting any comments if you spot some errors or suggetions to improve it. electrosetup.pdf

Views: 5215

Comment by Michael Pursifull on February 6, 2012 at 4:18am

Would you consider sharing some photos of the gear (cameras, etc) inside the aircraft so we can see how you distribute it, mount it, etc?

Comment by James on February 6, 2012 at 4:47am

Yes Mike, this is a draft image how electronics placed and the camera mount i want to use with stabilization is this :

i will upload more pictures when i go home

Comment by jim C. on February 6, 2012 at 7:14am

excellent project, I also am trying to do something similar with my skywalker ,    

Comment by James on February 6, 2012 at 7:28am

Hi Jim, iam glad you see this post, i actually used your parameters from your post and i was excited with your xtend telemetry, very well job!! congrats! 

Also thanks for your kind words. I think if i manage to solve these litlle issues it will be "excellent".. for me at least..

Comment by jim C. on February 6, 2012 at 7:44am

I also I have some problems after several months of work, I could not use the command (DO_REPEAT_SERVO)  to activate the camera automatically, I'm doing it manually via RC.

Comment by James on February 6, 2012 at 9:39am

More photos!!:

Battery compartment, red battery 4s for BEC-avionics & esc-motor, grey batt 3s for Fpv TX, u can see 5.4TX and the Y battery link, also a modified fujifilm c20 for ifrared chanell.

Main compartment: a Sony w310 for RGB, ESC, RX and APM

ESC is mounted on CEILING with double sided tape:

Finaly APM is housed in my old trusty Acrylic case with foam tape at the bottom, the hole case is placed with velcro tape on the bottom, probably i will make a self in the midle for APM2

Comment by Alex on February 6, 2012 at 10:05am

Very nice, what motor/prop are you using for your aircraft?

Comment by James on February 6, 2012 at 10:09am

Scorpion 3014 v2 1220kv with 10 x 6 APC or 9x6 graupner fold prop, basicaly i kept all my harware from my previous project, but i changed all my servos.

Comment by James on February 14, 2012 at 12:12pm

some more:

Comment by James on February 14, 2012 at 12:13pm


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