Flexrc Simple X 120 HD Caddx Tarsier 4K Camera - 4s (Toothpick Style)

By wrong17 on Sep 04, 2019

18  600  4

I will write more about this later, but enjoy the pictures and video for now.

Here is the HD video: 2.5K 4:3 h.265 60fps

Here is the DVR video. So you can see how the quad handles the extra weight and the voltage sag.


Part List


Simple X-120 FPV Drone Frame (10 builds)

Flight Controller

GEPRC GEP-12A-F4 V1.1 BLHELI_S 12A F411 Flight Controller OSD (5 builds)


4 x RotorX RX 1404 3600kV 3S-4S Brushless Motor (7 builds)


HQProp T3X3X3 PC Propeller (Set of 4) (29 builds)

FPV Camera

Caddx Tarsier V2 4K FPV Camera / HD DVR - Choose Your Color (35 builds)

FPV Transmitter

TBS UNIFY PRO32 NANO 5G8 (171 builds)


Team BlackSheep TBS Crossfire Nano RX - Heli-Nation (526 builds)


2 x RDQ Series 7.6V 2S 525mAh 80C LiHV Micro Battery - XT30 (2 builds)


FrSky Horus X10 Radio (Amber)


FatShark Dominator HDO OLED FPV Goggles & ImmersionRC rapidFIRE 5.8GHz Goggle Module w/ Analog PLUS COMBO | Heli-Nation.com (2 builds)


DJI Digital HD FPV Goggles (34 builds)

HD Camera

GoPro HERO7 Black Action Camera (61 builds)

Misc Parts

Toothpick Style Quad HD 20x20 Adapter Caddx Turtle Tarsier or Runcam Split by wrong17 (3 builds)
See Site

Misc Parts

The Calimero 4K by Dave_C_FPV (3 builds)
See Site

Video Receiver

ImmersionRC rapidFIRE w/ Analog PLUS Goggle Receiver Module (125 builds)

Radio Module

TBS Crossfire TX - Long Range R/C Link (10 builds)

Battery Charger

HOTA D6 PRO Charger AC200W DC650W 15A (4 builds)

Soldering Iron

TS100 Portable Programmable Smart Soldering Iron (137 builds)


Lowepro QuadGuard BP X3 - Drone Backpack for 4 FPV Quad Racing Drones and 15" Laptop w/Exterior Mounts (Black)
Show stores (8)


Sign in to comment

Igi87   Sep 05, 2019  

Hi, nice Build Dude!
Can I ask you a question? How is the All in One FC/ESC handlig the 4s with this big motors and 3x3x3 HQ Props. Did you not burn a ESC or Motor? Thank you for your feedback.

Cheers :)

wrong17   Sep 05, 2019 

Thanks! I was a bit skeptical about these AIO boards on 4s with 1404 motors but honestly the GEPRC board that I’m using is taking it like a champ. The motors are barely warm after a running a full pack and it is about 90 plus degrees outside. The same with the AIO board, I have NO indication that it is having any issue running it 4s. In fact, it flies smoother with 4s with the same stock PIDs than on 3s. On 3s I get some oscillation that is completely gone when I use a 4s lipo.

Igi87   Sep 06, 2019 

thank you for the feedback. Sounds good to me, I was a bit woried about the all in one AIO Board, but I will try it. the only thin is that i run 1404 4850kv motors....we will see :D

wrong17   Sep 06, 2019 

I was talking to another guy and he uses the same motor as you and it seems to work well with the HQ 3x2 Bi-Blade props. The AIO boards is handling 4s lipo without any problems. I can only speak for the GEPRC boards because that is the only one I have tried so far.

Guides & Reviews

23 5,403  24
Nov 30, 2019

In late 2019 DJI made inroads into the FPV scene with their remarkable low-latency digital system. It gave us a 720p video feed with latency on-par with the status quo, analog video. Traditionally we've used analog video systems for low-latency video, but the video quality is far from ideal. It's a trade-off we've been willing to accept for the control. Now we've got the best of both worlds and what..

Read more
3 4,883  14
Sep 18, 2019

When the FatShark HDOs hit the market in 2018 the FPV community rejoiced for the new Sony OLED displays. While they lacked further upgrades like an updated DVR and power button they were still a market success. With the 2019 announcement of the Orqa FPV.One the community finally had a potential HDO killer on the horizon. With only weeks before the release of the Orqa FPV.One Skyzone came out of left..

Read more