Gecko 🦎

By sergetania on Apr 01, 2019

19  1,420  8

It's not easy to build a 3" drone that is better than the drones I have already built and enjoy flying. A daunting task but I hope I might have accomplished it with the Gecko .

I am very thankful to the emergence and popularity of the split-type cameras. Personally, I think the cameras are STILL crappy (I thought it was ironic to see Tommy strap a GoPro on top of an acrobrat for the pro shoot he did) but I love bulding on frames designed to accomodate the split cameras. The Gecko is a great example. There is so much room when you don't need to sqeeze in a split camera! I could fit two of everything in that space! And a bunch of 3D-printed parts just because I have a hard time finding anything else useful to print :-)

After almost a year of flying in my yard I have determined that 1306 motors are the most optimal. Anything bigger is too dangerous, anything smaller is... just small. Therefore, I am watching the weight a bit trying to stay with 1306s. Maybe I am just lying to myself about watching the weight, wouldn't be the first time :-( There is nothing weight-saving in this build. Hence it turned out rather chunky at 153g. Oh, well, if it is suggish it is going to get upgraded 1407.

Time for a flight... and probably a mud bath!

After a few packs, I think I will keep this one on 1306s. I am very impressed how well it flies. Whatever it is, Betaflight 4, Talon F7, the Aikon ESC (which needed a capasitor), it is amazingly smooth and stable. None of my quads flies this well. For the first time, what I see in my goggles looks comparable to what I see in those cool YouTube videos (minus the pilot, of course!). Maybe it could use more power but it flies fine as it does.

After a few more flights, I grew tired of replacing the antenna tubes. Switched to a T-antenna with new 3D printed fixtures for rear end. I think it looks nice!

Photos

Part List

Frame

Armattan Gecko 3" Freestyle Frame (6 builds)
Racedayquads.com
$71.50

Flight Controller

Talon F7 BB 20X20 Flight Controller (13 builds)
Heli-nation.com
$32.99

ESCs

Aikon AK32PIN 4in1 20x20 35A 6S ESC (53 builds)
Heli-nation.com
$59.00

Motors

4 x EMAX 1306 RS1306 Version 2 RS1306B 2700KV 4000KV Brushless Motor 3-4S For RC Drone Multi Rotor (14 builds)
Banggood.com
$47.56

Propellers

RotorX Triblade RX 3044TX Props (3CW, 3CCW) (32 builds)
Airbladeuav.com
$2.49

FPV Camera

RunCam Micro Eagle 800TVL 16:9/4:3 NTSC/PAL CMOS FPV Camera - Red (297 builds)
Racedayquads.com
$44.99

FPV Transmitter

AKK FX3 Ultimate Mini 20x20 25-600mW VTX w/ Smart Audio - MMCX & U.FLDefault Title (109 builds)
Racedayquads.com
$18.99

Antenna

nidici Foxeer Lollipop 3 FPV Antenna 5.8GHz RHCP Ommi 2.5dbi MMCX Antenna for FPV Quadcopeter TX/RX/VTX (Angle)(Red,Pack of 2) (22 builds)
Amazon.com
$20.99

Receiver

FrSky R9MM Long Range 915MHz RC Receiver - Get Yours Today! - RMRC (91 builds)
Readymaderc.com
$20.80

Batteries

TATTU 650mAh 4S1P 75C 14.8V Lipo Battery Pack with XT30 plug (41 builds)
Getfpv.com
$14.99

Radio

FrSky X-Lite 2.4GHz Radio Controller (Red) (66 builds)
Getfpv.com
$121.99

Goggles

FatShark Dominator HDO FPV GogglesRechargeable 1800mah Pack (108 builds)
Racedayquads.com
$424.99

Misc Parts

Armattan Gecko parts by sergetania (3 builds)
Thingiverse.com
See Site

Video Receiver

ImmersionRC rapidFIRE w/ Analog PLUS Goggle Receiver Module (129 builds)
Pyrodrone.com
$149.99

Radio Module

Frsky R9M Lite - Radio Transmitter Module (Black) (11 builds)
Getfpv.com
$44.99

Soldering Iron

Hakko FX888D-23BY Digital Soldering Station FX-888D FX-888 (blue & yellow) (24 builds)
Amazon.com
$104.95
Show stores (9)

Discussion

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lnguyen21   Apr 02, 2020  

Super clean build! Too bad I didn't see this before I built my Gecko. But I have a question regarding your FC. I have the Talon F7 as well with a Rush Tank Mini. And I lose video feed the minute I move or rotate my goggles. I lead to believe that its a Pitmode problem. Was wondering if you had any input or how did you set it up on betaflight?

framejb   Apr 11, 2019  

Sweet build. I’ve got the same ESC/FC on mine, but with Emax 1408 2300kv and 6S. It flys well, but i need a higher pitch T mount prop (using 3x3x3 HQ now). Where did you get your RotorX 3044 props? I can’t seem to tind them anywhere.

sergetania   Apr 11, 2019 

Thanks!
That's the problem with t-mount motors. The prop manufacturers lag behind. I wish we had 3052 in t-mount.
I got mine at https://www.airbladeuav.com
but they are out of stock at the moment. You can ask them when they may have them in, they respond quickly in the chat. They also have 3035 but it's not an aggressive prop either.

RAHFPV   Apr 09, 2019  
1

sweet rig my brother.

fovea   Apr 02, 2019  
1

beautifull prints, i like the colour detail on the frame. beautifull build!

sergetania   Apr 04, 2019 
1

Check out the new rear end - I think it is pretty cool!

fovea   Apr 02, 2019  

if you uprade with bigger motors, the hobbywing rotorx 1408 2400kv on 6s would make it dangerous fast ;-)

sergetania   Apr 02, 2019 

Dangerous is exactly what I am trying to avoid. But 1407 Brat motors may be a good choice. Still thinking about it.

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