Armattan Gecko 3 Shark Byte

By optikool on Aug 31, 2021

6  309  4

My next Armattan Gecko 3 Shark Byte build. I was lucky enough to fix the HolyBro Kakute F7 Mini FC/ESC I had originally planned to put in my 4 inch Gecko. Turned out to be bent pins on the FC causing the ESC to not power the FC when the battery is connected. I designed a new TX5S.1 holder for this build, but it's a 20x20 stack mount, so should fit anywhere you can mount 20x20. I went with the T-Motor 2203.5 motors, because I have become a fan of them on my 4 inch Gecko, and wanted to see what power they could bring to a 3 inch Gecko. I redesigned the original Gecko 3 antenna holder to be similar, but lighter then the 4 inch version. I still need to replace the original cable that came with the camera, and I'm hoping the HDZero MIPI Cable 40mm will be compatible. I'm also debating if I want to put ducts on the props, just for fun. It took me a week, but I was able to designed some 76mm ducts, which I'm testing on my other 3 inch Gecko, probably design some 90mm ducts for the 4 inch later. All in all I'm happy with this build and I'm hoping to take it out for it's maiden flight this weekend.

1/4/2022 - Upgraded Camera and VTX and designed an HDZero Race v2 mount to get rid of the noise coming from the front motor wires into the video feed. Still haven't had a chance to take it out yet because of weather. But if anybody is looking to see how the T-Motor 2203.5 motors handle on this quad, pretty amazing by the way, I upgraded my other Gecko 3 build with the same motors and you can see that video here...


Part List


Armattan Gecko 3" Frame (3 builds)

Flight Controller

HolyBro Kakute F7 Mini V3 Tekko32 F3 45A 20*20 Stack (2 builds)


4 x T-Motor F2203.5 - 2850KV Motor (11 builds)


GemFan Flash 3052-3 (2CCW-2CCW) Choose Color (13 builds)

FPV Camera

Foxeer Digisight V3 720p 60fps Sharkbyte and HDZero FPV Camera (No MIPI Cable) (2 builds)

FPV Camera

Foxeer Digisight 2 Nano 720P Digital/Analog 4ms Latency Super WDR FPV Camera (9 builds)

FPV Transmitter

HDZero Race V2 HD Video Transmitter By Divimath (10 builds)

FPV Transmitter

Fatshark SharkByte TX5S.1 Video Transmitter (8 builds)


TBS Crossfire Immortal T V2 Antenna (149 builds)


Lumenier AXII 2 Stubby 5.8GHz Antenna (RHCP) (9 builds)


TBS Crossfire Nano Rx FPV Long Range Drone Receiver (1491 builds)


Tattu R-Line 850mAh 14.8V 95C 4S1P Lipo Battery Pack with XT60 Plug (11 builds)


RadioMaster TX16S MKII MAX Joshua Bardwell Edition EdgeTX RC Transmitter w/ V4.0 Hall Gimbals - ELRS


HDZero Goggle | HDZERO (18 builds)


Fatshark Dominator HDO 2 V2.1 OLED FPV Goggles (71 builds)

3D Printed

Armattan Gecko SMA with Immortal T V2 by optikool (2 builds)
See Site

3D Printed

Armattan Gecko Arm Guard by optikool
See Site

3D Printed

Armattan Gecko 3 Foot by optikool
See Site

3D Printed

Armattan Gecko 3 Prop Strike Guard by optikool
See Site

3D Printed

Armattan Gecko GoPro session 5 with ND filter by Rfikus (4 builds)
See Site

3D Printed

Armattan Gecko 3" - Front Protector by Sike1992 (6 builds)
See Site

3D Printed

Shark Byte TX5S1 Holder 20x20 by optikool
See Site

3D Printed

HDZero TX5R1 Holder 20x20 by optikool
See Site

HD Camera

GoPro HERO8 Black - Waterproof Action Camera with Touch Screen 4K Ultra HD Video 12MP Photos 1080p Live Streaming Stabilization (37 builds)

HD Camera

GoPro HERO5 Session (303 builds)

HD Camera

Runcam 5 - 4K Action Camera - Choose Color (21 builds)

HD Camera

GoPro HERO10 Black Action Camera (Webcam, Wifi, Underwater)
See Site


2PCS RF U.FL(IPEX/IPX) Mini PCI to SMA Female Connector Pigtail Antenna Wi-Fi Coaxial Cable RG178 10cm (SMA Female(No pin))


WaFL’s XT60 Cap Cap (Set of 3) (9 builds)

Misc Parts

Panasonic FM 1000uF 35v Low-ESR Aluminum Electrolytic Capacitors - Leaded, 20% Tolerance, 7000 Hours @ 105C, 12.50mm X 20.00mm ( (5 builds)

Radio Module

RadioMaster Ranger 2.4Ghz ELRS Module - Starter Combo (3 builds)


TBS Diamond Antenna (37 builds)

Misc Supplies

MG Chemicals 422B Silicone Modified Conformal Coating, 55mL Glass Bottle with Brushes, Clear (22 builds)

Misc Supplies

HOTA D6 PRO Dual Charger 1-6S AC200W/DC650W 15A w/ Wireless Cellphone Charging - Black (14 builds)
Show stores (7)


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Isomorphic   Sep 06, 2021  

The motors look crazy big on this build. Whats your AUW w/o session and mount? Flight times and how does she fly? Cool looking build, I like it!.

optikool   Sep 08, 2021 

It's about 220g without the mount. I meant to take it out today for a maiden flight but didn't have the time. I'll be testing out my other Gecko 3 as well as one of my Gecko 4 builds with newly designed ducts to see how they fair as cinewhoops. I'll most likely take her out then and post some videos.

feej   Nov 24, 2021 

Did you get to maiden her? I'm also curious about the AUW/lipos/flight times.

I'd like to try shark byte on my Apex 4 but it's pushing 350g with 2004 motors and an SMO 4K (30g), and feels a little sluggish. Not sure another 10-15g ish is a good idea :-D

Beautiful looking build in any case, love it!

optikool   Nov 26, 2021 

No, I still haven't had a chance to take it out. I had some video issues with the video feed a while back and pretty much put it on the shelf till I could get a new camera. Waiting on either my Digisight 3 or HDZero cameras to come in. But once I do, I'll post video. :D

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