Gecko 4!

By L0stB1t on Jan 02, 2021

6  338  2

I did a rebuild of my 3" Gecko with a new 4" bottom plate. I've also upgraded the ESC from the Mamba F25 to the F30, and flashed JEsc 24 kHz instead of 48 kHz this time.

After the first flights it's clear the nimble Gemfan 4023 props are a better match than the heavy Gemfan 4032's for the motors, which I didn't upgrade. I've replaced the camera with a Tarsier so it can shoot HD footage, and I replaced the VTX with an AKK model which has a microphone. I'm not convinced it's quality can match the Rush Tiny Tank it had before though...

The weight increased with 27g but with the bigger props it seems more efficiënt and I'm getting an extra minute of flight time!

For the maiden flight (during winter time) I didn't want to take too many risks so no fancy freestyle tricks, but it does show the potential of this kwad:

Photos

Part List

Frame

Gecko 4 (36 builds)
Armattanquads.com
$76.00

Flight Controller

MAMBA F405 Mini MK2 Betaflight Flight Controller & F25 20A 3-4S DSHOT600 FPV Racing Brushless ESC (110 builds)
Banggood.com
$39.99

ESCs

Mamba F30 MINI 30A Blheli_S 2-5S DSHOT600 8 BIT Brushless ESC 20x20mm for RC Drone FPV Racing (7 builds)
Banggood.com
$45.99

Motors

4 x T-Motor F20II F20 II 1408 3750KV Brushless Motor 2-4S For 130 140 150 Multi Rotor (22 builds)
Banggood.com
$71.96

Propellers

GemFan Hurricane 4023 3-Blade (30 builds)
Airbladeuav.com
$2.99

FPV Camera

Caddx Tarsier 4K 30fps 1200TVL Dual Lens Super WDR WiFi Mini FPV Camera HD Recording DVR Dual Audio OSD for RC Racing Drone (63 builds)
Banggood.com
$94.90

FPV Transmitter

AKK FX3-ultimate 5.8GHz 25mW/200mW/400mW/600mW Switchable Mini VTX Support OSD Configuring via Betaflight (142 builds)
Amazon.com
$20.99

Antenna

2pcs Foxeer Lollipop 85.5mm 5.8G 2.3dBi RHCP UFL Super Mini FPV Antenna Red/Black For RC Drone (106 builds)
Banggood.com
$19.99

Receiver

FlySky FS-X14S 2.4G 14CH AFHDS 2A RC Receiver Support PPM S.BUS Output for NV14 I6X I6S I6 I4 Transmitter (2 builds)
Banggood.com
$28.86

Batteries

Tattu R-Line 14.8V 4S 850mAh 95C LiPo Micro Battery - XT30 (70 builds)
Racedayquads.com
$20.59

Radio

RadioMaster TX16S Hall Sensor Gimbals 2.4G 16CH Multi-protocol RF System OpenTX Mode2 Transmitter for RC Drone (96 builds)
Banggood.com
$185.99

3D Printed

Armattan Tadpole / Gecko TPU Arm Guards Motor Soft Mounts FPV Drone 3D Printed
Ebay.com
$3.95

3D Printed

Armattan Gecko TPU Capacitor / Aerial Mounts FPV Drone SMA TBS 3D Printed
Ebay.com
$3.95

Misc Parts

FullSpeed Lucky Box Beeper Buzzer 90dB 5V Built-in Battery for RC Drone FPV Racing (24 builds)
Banggood.com
$16.37

Battery Charger

ISDT Q6 Lite 200W 8A MINI Pocket Battery Balance Charger for 2S-6S Lipo Battery (29 builds)
Banggood.com
$41.99

Soldering Iron

MINI TS100 Digital OLED Programmable Interface DC5525 Soldering Iron Station Built-in STM32 Chip (265 builds)
Banggood.com
$53.99
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Discussion

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Samw85   Jan 25, 2021  
1

Hey

I'm building a similar build for a buddy and found out that none of the cam mount holes are ideal. If I take the front one like you do, my tarsier lenses are not 100% protected by the case.
On your pictures it looks like the cam is within the cage, even with the ND filter. Did you do something special like bend the pieces, or is it just an illusion in the photos?
Cheers!

L0stB1t   Jan 25, 2021 

Hi there. The brace doesn't completely protect the lenses, they stick out 1-2mm on top and in the front (bottom of the lower lens). It's not ideal but the braces don't fully protect the camera anyway:

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