GEPRC Crocodile75 LR HDZero

By optikool on Sep 10, 2023

3  0  0

My next Long Range Drone is finally finished. I built this a couple months back and had planned to put the new HDZero Freestyle VTX in once it came out, but I decided not to wait any longer and finish this drone using the Freestyle V1 VTX. I went with the GEP-LC75 V3 frame because it looked really cool with a lot of room inside. However I did find the V1 VTX barely fits inside the frame with the panels. The V2 will be a 20x20 VTX so if it fits better, I'll swap out the VTX. If not, I'll probably design wider backpanels. All the TPU is custom made is custom made. I went withe my normal arm guarde design, with padding on the top in order to reduce motor vabration and added landing skids. Because this uses dual diversity ExpressLRS antennas, I decided to redesign the front sidepanels and make them more useful by holding the antennas. The GPS mount is wider in order to hold the GEPRC GEP-M10-DQ GPS Module, which is bigger then the Matek M10Q-5883 I normally use. And I swapped out the FPV camera lens for the Caddx Polar Lens 1.6mm in order to get rid of the fisheye and get full 16:9 image at 1080p/30. All in all, I'm pretty happy with this build and can't wait to take it out for a spin.

Photos

Part List

Frame

GEPRC GEP-LC75 V3 Frame Kit
Pyrodrone.com
$119.99

Flight Controller

T-Motor F7 HD 30x30 Flight Controller for DJI (24 builds)
Pyrodrone.com
$62.90

ESCs

T-Motor F55A Pro II 55A 3-6s BLHeli32 4-in-1 ESC (16 builds)
Pyrodrone.com
$93.90

Motors

4 x T-Motor F100 2810-1350KV Long Range/Cinelifter Motor (3 builds)
Pyrodrone.com
$143.60

Propellers

HQ Prop 7.5x3.7x3 Durable Tri-Blade Light Grey (2CW+2CCW)-Poly Carbonate (2 builds)
Pyrodrone.com
$4.99

FPV Camera

HDZero Micro V2 Camera | HDZERO (11 builds)
Hd-zero.com
$49.99

FPV Transmitter

HDZero Freestyle 1W Video Transmitter for Sharkbyte / HD Zero By Divimath (12 builds)
Pyrodrone.com
$99.99

Antenna

2 x RadioMaster ExpressLRS 2.4GHz UFL T Antenna - 95mm (3 builds)
Pyrodrone.com
$6.98

Receiver

Happymodel 2.4G ExpressLRS EP1 Dual TCXO RX True Diversity Receiver Module (8 builds)
Pyrodrone.com
$24.99

Batteries

6s GREEN Long Range 5AH 20C Dark Lithium | Upgrade Energy
Upgradeenergytech.com
$99.99

Radio

RadioMaster TX16S MKII MAX Joshua Bardwell Edition EdgeTX RC Transmitter w/ V4.0 Hall Gimbals - ELRS
Pyrodrone.com
$249.00

Goggles

HDZero Goggle | HDZERO (20 builds)
Hd-zero.com
$599.99

Goggles

Fatshark Dominator HDO 2 V2.1 OLED FPV Goggles (71 builds)
Pyrodrone.com
$499.00

3D Printed

HDZero Freestyle Mount 30x30 by optikool (5 builds)
Thingiverse.com
See Site

3D Printed

Drone Stand by optikool
Thingiverse.com
See Site

3D Printed

Geprc Crocodile75 Immortal T Side Antenna Holder by optikool
Thingiverse.com
See Site

3D Printed

Geprc Crocodile75 GPS SMA Holder by optikool
Thingiverse.com
See Site

3D Printed

Geprc Crocodile75 GoPro Mount by optikool
Thingiverse.com
See Site

3D Printed

Geprc Crocodile75 FPV Camera Holder by optikool
Thingiverse.com
See Site

3D Printed

Geprc Crocodile75 Arm Guard with Skid by optikool
Thingiverse.com
See Site

3D Printed

Geprc Crocodile75 Prop Strike Guard by optikool
Thingiverse.com
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)
Amazon.com
$2.00

HD Camera

GoPro HERO5 Session (303 builds)
Getfpv.com
$199.99

HD Camera

Runcam 5 - 4K Action Camera - Choose Color (21 builds)
Pyrodrone.com
$109.99

HD Camera

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

Hardware

GEPRC GEP-M10-DQ GPS Module
Pyrodrone.com
$24.99

Hardware

HDZero MIPI Cable 250mm
Pyrodrone.com
$14.99

Hardware

Vifly Finder 2 Buzzer - Lost Drone Finder/Locater/Alarm (28 builds)
Pyrodrone.com
$12.99

Hardware

Caddx Lens For Polar and Avatar Pro
Defiancerc.com
$10.00

Misc Parts

LingSY 10 Pairs XT60 Connectors Male Female Bullet Connectors Plugs for RC Lipo Battery (3 builds)
Amazon.com
$8.99

Misc Parts

HobbyUnlimited Polyolefin 2:1 Clear Transparent Heat Shrink Tubing (3/4in Diameter, 30 Feet Length)
Amazon.com
$7.99

Misc Parts

Replacement for 6 pcs Panasonic FM Series Capacitors 35V 1000uf Low Impedance (2 builds)
Amazon.com
$7.59

Misc Parts

560PCS Heat Shrink Tubing 2:1, Eventronic Electrical Wire Cable Wrap Assortment Electric Insulation Heat Shrink Tube Kit with Bo
Amazon.com
$6.99

Misc Parts

WaFL’s XT60 Cap Cap (Set of 3) (9 builds)
Pyrodrone.com
$4.99

Misc Parts

3D BEST-Q Flexible TPU 1.75mm 3D Printer Filament, Dimensional Accuracy +/- 0.03 mm, 1KG Spool, 8 Color to Choose (Black)
Amazon.com
$21.57

Misc Parts

BNTECHGO 14 Gauge Silicone Wire Spool 25 ft Black Flexible 14 AWG Stranded Tinned Copper Wire (3 builds)
Amazon.com
$14.44

Misc Parts

BNTECHGO 14 Gauge Silicone Wire Spool 25 ft Red Flexible 14 AWG Stranded Tinned Copper Wire (3 builds)
Amazon.com
$14.44

Misc Parts

Pack of 4 RF U.FL(IPEX/IPX) Mini PCI to SMA Female Pigtail Antenna Wi-Fi Coaxial RG-178 Low Loss Cable (4 inches (10 cm)) (3 builds)
Amazon.com
$13.09

Radio Module

RadioMaster Ranger 2.4Ghz ELRS Module - Starter Combo (3 builds)
Pyrodrone.com
$119.99

Accessories

TBS Diamond Antenna (37 builds)
Getfpv.com
$24.95

Misc Supplies

MG Chemicals 422B Silicone Modified Conformal Coating, 55mL Glass Bottle with Brushes, Clear (22 builds)
Amazon.com
$19.42

Misc Supplies

HOTA D6 PRO Dual Charger 1-6S AC200W/DC650W 15A w/ Wireless Cellphone Charging - Black (14 builds)
Pyrodrone.com
$117.98
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