Comment by Muot Vuong on July 31, 2010 at 5:56pm

Please keep us posted. Sounds interesting.

Developer Comment by Jani Hirvinen on July 31, 2010 at 6:31pm

That blade holder is a great idea. Controlling it will be really smooth.. Yeah well if it flies :P

Do you plan to have normalish airplane hull or what on this?

Comment by mmormota on July 31, 2010 at 6:43pm

How can you control the turn around the tilt axis ? (the axis of the stick between the motors)

Developer Comment by Jani Hirvinen on July 31, 2010 at 6:58pm

With those servos. People are using same idea on Tri copters to control "rudder" engine eg. tilting one of their motor. Only thing that i am concerned is that does servos have enough travel to tilt those motors about 100 degrees.. 90° is needed for take to forward flying but during takeoff/landing you need to have extra 5-10° to control body and especially yaw

Moderator Comment by John Church on July 31, 2010 at 7:07pm

It's been said, but yes- excellent use of a 600 blade grip!

Developer Comment by Jason Short on July 31, 2010 at 8:15pm

Could you post a link to modify the fasst receiver? This project looks really cool. Good luck.

Developer Comment by Jason Short on July 31, 2010 at 8:18pm

Oh, and are you running the DCM on the imu as well?

Comment by Brad Powers on July 31, 2010 at 9:27pm

I don't exactly remember which pin it was (it's been two years since I hacked mine), but the FASST receivers all have full PPM output on one pin of the main MCU within it. Some probing with an Oscope should work. Good luck.

Developer Comment by John Arne Birkeland on July 31, 2010 at 9:36pm

@Jani: At first I only plan to hover and have forward flight with motors at about 45° forward angle maximum, so I will build a minimal skeleton with just tail and no wings for that type of flight. But the next logical step would be adding wings to generate lift when moving forwards. The TR S3101S servos I use are great in that regard, since they can be moved close to 180° without any modifications by sending out of bound PWM signals.

@Jason: Sure, here is a link for the FAAST PPM modification. I am not using the DCM at the current stage. I have had some problems with stabilization performance when the airplane is not moving forward (hovering). To keep things simple I am just using the ArduIMU+ board as a 3-axis head-hold gyro and servo mixer.

Developer Comment by Jani Hirvinen on July 31, 2010 at 10:43pm

John could you explain a bit more about your problems with DCM when hovering.. What type of problems you have seen?

You plan to have small heli gyro on tail on your first body?? I think that would be good idea and then you don't need to worry so much about tail in this point :)

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