Roma Heterocamia

By jdmkramer on Dec 20, 2020

18  974  4

Next 2S Li-Ion thing. Really wish I could get these motors in a higher Kv. I think the size is just right. When I accidentally put the camera mounts on backwards I realized I could make my own kinda sorta Runcam Hybrid 2. Phoenix Micro would have been better, but this is pretty cool. I'm using the vifly cam switcher so I can mess with split OSD plus it's neat to switch between cameras during night flights. There's a massive difference between the Split FPV feed and the Phoenix Nano in low light. I need to shied the GPS a bit though. This mounting location worked great on the Romadix, but I didn't consider the HD cam noise getting to it. The frame kit came with a nice GPS & T Mount print, but it was a bit chonky for my taste. This is the VTX setup I like for 2S Li-Ion. OG Unify + BEC. I was able to use a 20x20 stack cover plate as a nice VTX cover and U.FL lock, sandwiched on the back 20x20 mounts. Two layers of shrink made the singularity fit through the antenna/rx holder nicely, and the crossfire nano tucks in as well. Wire dipole on a ziptie for vertical polarized RC this time. The FC and Split came along from the Chimera thing. It flies great on 2 and 3S, but I still need higher Kv to get everything out of a 2S LiIon. Also not sure how the FC & ESCs like running down as low as 5.4V, but I'll find out soon enough. :)

Photos

Part List

Frame

Diatone Roma F4 LR 4" Frame (6 builds)
Racedayquads.com
$29.99

Flight Controller

HIFIONRC F7 2-6S AIO Toothpick/Whoop Flight Controller w/ 45A 4in1 ESC (5 builds)
Racedayquads.com
$56.99

Motors

4 x BrotherHobby VY 2004 3150Kv Micro Motor (14 builds)
Racedayquads.com
$83.96

Propellers

HQ Prop Durable T4x2x3 Tri-Blade 4" Prop 4 Pack - Grey (6 builds)
Racedayquads.com
$2.99

FPV Camera

FPV Drone Cameras for - RaceDayQuads (149 builds)
Racedayquads.com
$64.99

FPV Camera

RunCam Phoenix 2 Nano 1000TVL CMOS 4:3/16:9 PAL/NTSC FPV Camera (2.1mm) - Silver (21 builds)
Racedayquads.com
$29.99

FPV Transmitter

TBS Unify Pro 5G8 V3 (RP-SMA) (103 builds)
Team-blacksheep.com
$39.95

Antenna

TrueRC Singularity 5.8GHz U.FL Antenna - RHCP (7 builds)
Racedayquads.com
$19.99

Receiver

TBS Crossfire Nano Rx - FPV LONG RANGE DRONE RECEIVER (1395 builds)
Team-blacksheep.com
$24.95

Batteries

RDQ Series 11.4V 3S 1100mAh 50C LiHV Micro Battery - XT30
Racedayquads.com
$12.99

Misc Parts

ViFly Cam Switcher (2 builds)
Racedayquads.com
$6.99

Misc Parts

RDQ Micro M8N GLONASS GPS Module (70 builds)
Racedayquads.com
$15.99

Misc Parts

8mm Fabric Tape (2ft) (3 builds)
Racedayquads.com
$1.49

Misc Parts

RDQ 20x20 Mini Flight Controller Mount and Protector - FC Mount / Cover (5 builds)
Racedayquads.com
$0.99
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Discussion

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moirey   Jan 19, 2022  

I'm super curious to know how you got the vifly to work with crossfire.I havent been able to find any guides or suggestions for that.

BUDLoNG   Sep 28, 2021  

how did you mount you gps? double sided tape?

Rodrigo   Apr 14, 2021  

Hi My friend! About vifly switchcam, how did you connect together FC and crossfire nano? Which pad did you connect to? And bf configuration? tks!

phaley51   Feb 08, 2021  
1

Cool Build, I'm working on a li-ion 4 in build now. Had a custom dave_c lr build but building up a armattan Bobcat now. Debating on motor KV to get best efficiency. Looking at the FPV cycle 2203 motors in either 2800kv for a 3-4s build or the 3450Kv for 2-4s capabilities, cant decide which as I'll be running 3s most of the time and think 2800 will give better efficiency but completely rule out a 2s option.

AVGVSTVS   Feb 06, 2021  

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