Summer Gecko 🦎

By sergetania on Jul 09, 2019

7  745  11

This quad hits the sweet spot for me. I don't think I can build a 3" drone that I will enjoy flying more than this one. I will keep trying but it will be tough.
Since the first Gecko has endured more than 3 months of almost every day flying I thought it's time to build another but still with the best (IMHO) components.
By far, the Gecko is the strongest 3" frame I have ever flown and it flies so well. The new version has a tiny TBS Unify that at 400mW delivers better video than AKK FX3 at max power. Funny how these things work. The Ratel camera seems to be almost as good as the Micro Eagle but without the notorious white flash. Except it came totally being out-of-focus

The biggest problem is availability of 3044 props. Don't you guys find it ridiculous that no one can make an aggressive 3" t-mount prop?!? Something like 3052 because this drone is too boring with available 2.4-3 pitch props! I've talked to RDQ but they need to see more interest before they consider investing into a prop.

Photos

Part List

Frame

Gecko (28 builds)
Armattanquads.com
$71.00

Flight Controller

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

ESCs

AIKON AK32PIN 4 IN 1 25A 2-6S Blheli_32 DSHOT1200 Brushless ESC 20x20mm for RC Drone FPV Racing (2 builds)
Banggood.com
$47.99

Motors

4 x EMAX RS1306 4000K Brushless Motor CW (19 builds)
Getfpv.com
$51.96

Propellers

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

FPV Camera

Caddx Ratel Starlight HDR 1200TVL Micro FPV Camera - Choose Your Color & LensRed / 2.1mm (96 builds)
Racedayquads.com
$29.99

FPV Transmitter

TBS UNIFY PRO32 NANO 5G8 (186 builds)
Pyrodrone.com
$29.95

Antenna

TBS Triumph Pro 5.8GHz FPV Antenna RHCP (U.FL) (3 builds)
Getfpv.com
$19.99

Receiver

FrSky R9 MM SBUS Long Range 900MHz Micro Receiver (39 builds)
Racedayquads.com
$19.99

Batteries

TATTU 650mAh 4S1P 75C 14.8V Lipo Battery Pack with XT30 plug (40 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

Ummagawd UMMAGRIP Universal Super Sticky Battery Pad (122 builds)
Racedayquads.com
$4.99

Misc Parts

2 x PCB Wire by Joshua Bardwell and RotorRiot - Choose Your Size
Rotorriot.com
$3.58

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
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Discussion

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lnguyen21   Apr 02, 2020  
1

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?

sergetania   Apr 02, 2020 

Thanks!
Are you saying that you lose video if you do something with your goggles? For example, you see it, then you move your goggles and the video is gone? The quad doesn't get any signal from the goggles, it's the other way,from quad to goggles. To turn off the pitmode, you should have the User1 mode always set to ON on the Modes tab in the BF configurator. I believe it's how it comes new though so you should see the video (though I had a Talon where it didn't work but I got a replacement).

lnguyen21   Apr 02, 2020 

moving the goggles around on my face doesnt affect the feed. its when i rotate my head 90 degrees or if i move more than a feet from the quad is when i start to get static.

i do have user1 always and im still having the issue.

sergetania   Apr 02, 2020 

Pitmode shuts off video completely. Your issue sounds like vtx is transmitting at very low power, less than 25mW. Check the vtx to antenna connection. That might have popped loose. Try a different antenna. What's the vtx power setting in BF? Did you load the vtx table in the configurator? It's super annoying. If everything is OK the vtx should be at least at 25mW. Based on your description it sounds like much less. I am not familiar with that vtx. Does it have its own pitmode that you might have turned on? Assuming the vtx table is correct check in the OSD or configurator.

Rc Exp   Oct 26, 2019  
1

weirdest watermelon I've ever seen

fovea   Jul 13, 2019  
1

nice stack-able receiver print! nice build!

Sasquads   Jul 10, 2019  
1

Jah Rastafari

sergetania   Jul 11, 2019 
1

I just wanted something bright and merry! It's my summer quad! 🍅 🌽🍐🥒🥕

Sasquads   Jul 11, 2019 
1

Looks cool

elefantopia   Jul 11, 2019  

Breading the motor wires helps how?

sergetania   Jul 11, 2019 
1

Hope that braided wires are a bit longer when unbraided that could help when reusing motors with a bigger frame. Not a significant reason. For this build I have reused motors from a 3" massive droner and had to use racewires for the rear motors, the wires were too short. Mostly wanted to try racewires. I feel like too much trouble for 3" quads, may splice the wires instead.

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