ArduCopter with the APM v2: Long duration LOITER test (GPS position Hold) with the firmware v2.2 B4xp1

Here a video of a long duration LOITER (GPS position Hold) with my QRO quadcopter piloted by the ArduMega v2 board and the firmware ArduCopter v2.2 B4xp1 (with JLN mod). The flight is very stable and secure.

Avionic setup: ArduPilot Mega v2,  firmware Arducopter V2.2 B4xp1

Receiver: Turnigy 9X8C v2, Transmitter: Turnigy 9x, c 5V @ 5A Turnigy

Quacopter frame: DJI Flame Wheel F450

Hardware Setup: 4 brushless motors RC Timer BC-2836/11 (750 KV), 2 CW propellers  12 x 4.5, 2 CCW propellers 12 x 4.5, 4 ESC 40A RC Timer speed controllers, one Lipo battery 3S Turnigy Nano-Tech 2200 mAh

Take Off Weight (TOW): 1088 g without payload, Flight time: about 10 min

More infos at:http://diydrones.com/profile/JeanLouisNaudin

Regards,
Jean-Louis

Views: 3037

Comment by Imko van Beckhoven on January 26, 2012 at 4:24am

I am finishing almoust identical setup, may i ask what the reason for the BEC is?


Developer
Comment by Jean-Louis Naudin on January 26, 2012 at 11:19pm

I have used an uBEC (5v) to power the APM so to get a separate source of voltage from the ESC for safety reasons. S,o I am able to tune quietly the APM with the ESC and the motor unpowered. I have also added a 4700µF / 16V  capacitor at one output of the 2.4Ghz Turnigy 9x8C receiver to prevent an eventual fatal reset of it during the flight.

Comment by Ruben Wijnhoven on January 28, 2012 at 3:42am

Jean louis,

Do you have the leaning issue?


Developer
Comment by Jean-Louis Naudin on January 28, 2012 at 4:11am

The original and released ArduCopter v2.2 B4 firmware can be downloaded in the official ArduCopter page at:

http://code.google.com/p/arducopter/downloads/list

 

Comment by Ruben Wijnhoven on January 28, 2012 at 4:33pm

But does it lean or not?

Comment by Khurram on February 10, 2012 at 9:45am

What is its Payload capacity?


Developer
Comment by Jean-Louis Naudin on February 10, 2012 at 10:35am

It is able to carry about 200g of payload without problem... May be more...

Comment by Khurram on February 10, 2012 at 10:42am

Can u pls suggest some prop+motor combination if i need 800g payload?


Developer
Comment by Jean-Louis Naudin on February 10, 2012 at 10:58am

Here a rough calculation:

Take the TOW (Take Of Weight in Kg) including the payload, for a quadcopter, the Total Power Requirement (TPR) is:

TPR = TOW * 800 Watts/kg , so, for a quad,  this give for each motor,

the Motor Power Requirement : MPR = TPR / 4

i;e. for a quadcopter of 1 Kg (payload included), the TOW = 1 this gives a MPR = 1 * 800 / 4 = 200 Watts

You need to use a low Kv brushless motor (about 550 to 700 Kv) with a big diameter propeller (i.e. 12 x 4.5) ..

I hope that I have answered to your question...

 

Comment by Prasant on March 15, 2012 at 8:16am

hey brother can u tell me what is the max speed of ur motor after u added ur own battery to ur quad???????????

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