AOS 5 V2 HDZero Freestyle VTX

By zwilmes on Apr 08, 2022

5  1,409  5


This is a 5" freestyle quadcopter built using Chris Rosser's AOS 5 V2 frame. Most of my experience so far is with micro quads and with a 3" toothpick and a 3.5" freestyle quad. However, I find the 3.5" quad to be too sluggish for my taste when carrying a Runcam 5, so I wanted to make the upgrade to a 5" platform. I have experimented with larger quads, mainly a 6" that ran analog video and 6S motors on a 4S battery that I used with iNav, but this is really my first foray into 5"+ freestyle. Coincidentally, this is the first time I've felt motivated to do a Rotorbuilds writeup, mainly due to wanting to showcase the HDZero 1Watt VTX in this frame.


  • HDZero Freestyle 1Watt VTX is in the front mount, spaced up off the frame to allow air circulation. All Video equipment is at the front of the quad this way, minimizing interference to other electronics. Antenna is strapped to a front arm.

  • FC and ESC are in the rear bay mounted in standard orientation. This necessitated a remote 1000uf capacitor, which is in the middle bay connected to battery leads via 20ga wire. A 1.5uf tantalum capacitor and spike filter were added at the rear directly connected to ESC batt pads for additional filtering. I could have mounted the capacitor off the back, but in the interests of durability I wanted to have it inside the frame and have the battery leads come off the back since the prop clearance is narrow at the sides of the frame. Perhaps it would be better to mount ESC at 180 degree rotation so the battery leads come up through the top plate and capacitor can be directly connected, however this would have meant also rotating the FC for me or making a longer wiring harness since I'm using the factory JST FC to ESC plug.

  • GPS unit is Matek m8q with compass and is mounted on top of the action cam mount, with a ViFly GPS mate mounted just below on the back of the mount. The GPS mate as well as all GPS wiring are shielded with a combination of copper tape and copper wire loom which is all connected to the GPS wiring harness ground connection.


If anyone is interested, the wood side guards were made using osage orange and elm wood laminated together into a blank, drilled out to fit over standoffs and then cut out on the bandsaw. They were finished with Tru Oil and a coat of wax. This should keep junk out of the frame and be easier to clean off than most 3d printed side guards. Osage orange is one of the toughest woods I've ever found and I wouldn't hesitate to put it up against the durability of just about any 3d print. I'm a carpenter by trade and use it for hammer handles which are basically indestructible.


Part List


AOS 5 V2 (4 builds)

Flight Controller

Diatone Mamba F405 Basic MK2 50A 3-6S (F405 MK2 FC & F50A 4in1 ESC) (9 builds)


4 x EMAX Freestyle Spec Brushless Performance motor FS 2306 1700kv (3 builds)


HQ Prop ETHIX S4 5x3.7x3 Tri-Blade 5" Prop 4 pack - Lemon Lime (61 builds)

FPV Camera

Foxeer Digisight V3 Micro HD FPV Camera for SharkByte - Choose Version (3 builds)

FPV Transmitter

HDZero Freestyle 1W VTX (12 builds)


HappyModel 2.4GHz EP1 RX ELRS Receiver (102 builds)


RDQ Series 22.2V 6S 1300mAh 100C LiPo Battery - XT60 (15 builds)


RadioMaster TX16S Multi-Protocol RF Module OpenTX 2.4GHz RC Transmitter w/ V3 Hall Gimbals (94 builds)


Skyzone SKY04X V2 OLED 5.8GHz 48CH SteadyView Receiver FPV Goggles with DVR (7 builds)

HD Camera

RunCam 5 Orange 12MP 4:3 145°FOV 56g Ultra-light 4K HD FPV Camera for RC Drone (19 builds)

Misc Parts

Matek Voltage Spike Filter 5 Pack - XT60 (2 builds)

Misc Parts

10pcs JCCON 1000uF 35V Radial Electrolytic Capacitors Low ESR Lot

Misc Parts

PandaRC Programmable RGB LED 4 PackDefault Title (2 builds)

Misc Parts

Matek GPS & COMPASS MODULE M8Q-5883 (11 builds)

Misc Parts

VIFLY GPS Mate - external Power Modul for GPS (3 builds)
See Site

Misc Parts

iFlight 2pcs 5V Buzzer Alarm Super Loud FPV Buzzer Support F3 F4 F7 Flight Controller for FPV Racing Drone RC Quadcopter (4 builds)

Video Receiver

FatShark SharkByte RX5.1 Receiver Module (20 builds)

Radio Module

Namimno – Flash ELRS 2.4GHz, faible latence, taux de rafraîchissement élevé, Module TX avec OLED Nano, Mini récepteur RC p

Battery Charger

ISDT Q6 Nano BattGo 200W 8A Colorful Pocket Battery Balance Charger for 1-6S Lipo Battery (8 builds)

Soldering Iron

Sequre Mini SQ-001 65W Portable Soldering Iron - Choose Version (12 builds)
Show stores (10)


Sign in to comment

MrSmith   Mar 29, 2023  

These wooden side panels are awesome! Great work!
When i could buy these anywhere for my AOS7 i would buy them.

BUDLoNG   Oct 22, 2022  

Those side panels are dope :)....
could you tell me the height of the standoffs please?

zwilmes   Oct 22, 2022 

Thanks! Standoffs are 20mm

indus49   May 08, 2022  

Dude those side panels make it, they are awesome. You should think about making more and selling them. Love it.

zwilmes   May 17, 2022 

Thank you! Coming from woodworking background I love to incorporate stuff like that. I have thought about making more, if there were a demand for them I could definitely make up some templates to shape them faster!

Guides & Reviews

Jun 21, 2021

AirbladeUAV has done it again and this time they've brought long range to the 5" class! Based on the popular Transformer Mini, the new Transformer 5" Ultralight adopts a lot of the same design philosophies with larger props and more payload capacity. It can fly upwards of 20 minutes on a 4 cell Li-Ion battery pack and in ideal conditions it's got a range of over 4 to 5 miles. In this guide I'll walk..

Read more
Mar 04, 2021

With the release of the DJI FPV Drone cinematic FPV has become a lot more accessible, but you certainly don't want to crash a $750 drone! The QAV-CINE Freybott is a compact, lightweight cinematic FPV drone that can take a hit and keep going. It's a lot safer to fly indoors and around people. With a naked GoPro or the SMO 4k you can capture some great stabilized footage. In this guide I'll show you..

Read more