"I am surprised no one has replied to you yet...
You don't have to use the standard transmitter/receiver. The flight controller on the drone has a few channels as input and control, the input is usually PWM. Normally those input channels are…"

"If you don't want to open the GoPro and risk damaging it, there is a way to control it using the HD bus port. If you google for "gopro hd bus", you can find a lot of sites showing how to control the GoPro using the HD bus, for example:…"

"So then it's a helicopter...

The difference is that instead of wasting energy on converting mechanical energy to electricity (plus the added weight of an electric generator), and then back to mechanical energy through the brushless motors, you are…"

"Instead of 4 gas motors, why not take the concept of a Stingray 500 with one gas motor at fixed RPM with direct drive to propellers, and have the variable pitch controlled electronically.

Much more efficient than converting mechanical energy to…"

"I had the same idea, but I don't have time to work on it :(
To add to the sensors, I would add GPS, and barometer as a must. Optionally I would also add optical flow sensor, and ultrasonic sensor.

It would be nice if you can integrate (develop) a…"

"It looks like the SunnySky is a good brand, I found these motors:
http://www.buddyrc.com/sunnysky-x2212-13-980kv-ii.html
and
http://www.buddyrc.com/sunnysky-x2212-9-1400kv-ii.html
Both of them seem to be 4S motors, but the kv does not match... so I…"

"Here's some links to inspire you:
https://www.youtube.com/watch?v=L75ESD9PBOw
http://www.e-volo.com/
http://www.dailymail.co.uk/news/article-2622149/We-lift-First-look-...
 
Keep in mind that the quadcopter has to lift it's own weight, so you have…"

"A crane and a quadcopter is a totally different thing... a crane is sitting on the ground, and it has many gears that convert the speed of the motor to power the crane.
A quadcopter has to push the air down to get the lift off the ground, and it…"

"I got my 3D printer about 2 months ago (end of January), and I did not know much about them before then (besides that they are cool, and wanted one). So I had a lot to learn in those 2 months, I never designed anything in 3D before, so I also had to…"

"I printed it in PLA; I hear it is much more difficult to print in ABS, so I did not even bother...
I use the Skeinforge slicer. I know it's old, and slow, but so far I did not have problems with it. It takes a while to learn all the settings…"

"I did not weigh each part, but the quad as you see it in the picture (all electronics, without the battery) it weighs 900 grams, so with a ~400 batery, the whole quad is 1300 grams... not bad (I think).
 
I don't have an appropriate battery for it…"

"Hi Wally, we really should find some other place to talk about this, because when we post a message, everyone in this thread gets an email notification. But since I am posting this message, I will try to answer to your problem.
Warping happens when…"

"I use PLA (easier to print). I am new to 3D printing; I did not get the chance to print with ABS yet. My printer is a Mendel90 Dibond Kit (the original one from Nopehead)
I am modifying this qudcopter: http://multirotorpilotmag.com/fpvquad/
I 3D…"