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leemes

Quadcopter "Crossfire Mini" for Small Printers (15x15)

by leemes Aug 30, 2013
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Hey,

I'm thinking of trying to print this. I've got a few questions:

  1. Did you already attempt flying it? how stable is it?
  2. Did you simply go with the electronics recommended for the bigger crossfire or choose different motors or so?
  3. Why do you think it as not suitable for fpv? not enough power to carry a camera or not stable enough?

Hope you can help me on this. The design is really great. I like the big crosssfire, but was also unable to print it, because my printing area is too small, so this is perfect.

Hey! In the meanwhile I was able to fly it. It's my first copter so I have no comparison. It flew quite good in my opinion; thanks to the KK2.0 auto level feature it was very stable in the air, although I didn't calibrate it. I am now also confident that it should be possible to add a camera. I use Turnigy Aerodrive SK3 - 2826-1240kv motors together with 25Amp ESCs and a 3S lipo. My quad has a total weight of 1050 g (incl. battery). With this setup I can hold the altitude with approx. 45% throttle, which results in a maximum upward acceleration of about the free fall acceleration (= 10 m/s²). For good experiences it's recommended to have more power (altitude hold throttle being about 33% which results in twice maximum upward acceleration). I'm very satisfied and for a beginner like me this is definitely enough to start with. Summarizing, I think you should definitely give it a try! Hope this helps! ;)

Nice, you added some led stripes around the body! Perfect for nightfligt! Do you have different colors to know whats front and back?

The LEDs are just for knowing where's front (I only added them to the front legs) but you're right, this makes it possible to fly at night but since I'm new to this I better only fly under optimal weather conditions. ;) My copter is orange at the front, black at the back.

PS. the stripes are from hobbyking, search for waterproof LED. They are quite cheap and connect directly to a 3S battery since they are rated for 12V (you can connect them to 4S with a regulator in between).

Great, I will check that out - yes I am on 4S :)