The AOS 3.5 sub 250g FPV quad build and review / A GEPRC SMART35 beater
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- Опубліковано 4 сер 2024
- This is my build of the Chris Rosser AOS 3.5 quad. It's 3.5 inch, sub 250g frame design for optimal performance. I'll cover the frame, build and final PID tune I settled on.
Flight times are around 4 minutes using a GNB 650mAh 4S LiPo, but you can got to an 850mAh if you want.
► AOS 3.5 frame: bit.ly/3ugVH75
► AOS 3.5 frame (Banggood): bit.ly/3mZgien
► AOS 5 frame: bit.ly/3ALpFCV
► EMAX Avan 3528 props:bit.ly/3uehfBv
► iFlight Xing 1404 3800kv motors:bit.ly/3kIKUQ0
► iFlight Beast F7 AIO: bit.ly/3udWEgy
► ViFly Finder Mini: bit.ly/3o9r9mL
► GNB 650mAh 4S: bit.ly/381cqBk
🔔 Subscribe for more: bit.ly/3eaCoDk
☕ Buy me a coffee - www.buymeacoffee.com/whirlybloke
╔════╡Music and Sound Effects╞════════════════╡
║► Soundstripe - bit.ly/3nwZH2j
║► Get 15% off using my discount code - WHIRLY15
║► Thorr : Guiding Light - bit.ly/3kMtRwk
╚═════════════════════════════════╡
╔════╡My Gear╞════════════════════════╡
║ ► HD Goggles - SKY03O Oled: bit.ly/2WPkBu8
║ ► VRX Module - OwlRX: bit.ly/2wjIehD
║ ► Radio - Taranis X9D: bit.ly/2WZPzyC
║ ► Portable Battery Charger - ToolKitRC M6D: bit.ly/3hGzNDL
║ ► Workshop Battery Charger - iCharger 406 Duo: bit.ly/2VDMG5m
║ ► Soldering Workstation - Saike-909: bit.ly/2JAr9Jc
╚══════════════════════════════════╡
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00:00 Intro
01:18 Frame review
03:12 Frame build
03:35 Frame complete
04:18 Motors, Props, Flight controller and components
06:20 Build completed
10:15 Flight footage
11:28 Betaflight setup and PID tune
15:14 Conclusion
16:40 Thanks for watching
#whirlybloke
I hope the hobby will stay alive during this component price gouging problem.
thank you fore the upload.
I've only found DJI/Caddx stuff is a problem at the moment.
It will only get bigger. FPV lives in people's hearts man.
thanks, excellent video, and VERY VERY useful, since I'm waiting for my AOS3.5 frame. I'm going the shark byte route but I'll be using the iFlight FC like you did. I hope your tuning will translate well on my build, since I'm very new and I really don't know much of anything about tuning. anyway, thanks again and you have a new subscriber! :-)
Thanks for the kind words. Just follow Chris Rosser's tuning guide and it'll fly really well, Even on stock PIDs, Filters and Rates it's pretty good.
@@WhirlyBloke thanks!
Excellent video. Thank you so much. 👍👍👍 on music selection btw.
Thanks for watching.
Go Canada Go! My AOS 3.5 is still build pending!
The service to the UK is pretty fast.
Ive been flying this frame for more than a month now and my daily driver leaving my other quads sleeping. This indeed has so little vibes on the frame that i aint putting nd filter on my go2. Now ordering some spare arms just incase.
It rocks.
Love your build soooo clean.
I have a question about the spike absorber and if you have ever experienced any freezing of your FPV DJI video feed during flight? I have experienced spikes and my video has frozen especially after multiple flips back to back to back. I am using the fettech spike absorber with a 1000 UF capacitor on a 5 inch. I believe that the reason why I’m getting the spikes is because I use a 20 x 20 ESC and flight controller. Can you please tell me your thoughts on this? I have switched flight controllers and ESC‘s but I switched to a another 20 x 20 Akon F7. Previously I had the Tmotor 20 x 20 with the 55 amp ultra Tmotor ESC.
Your thoughts would be greatly appreciated. Also I had another question why did you use D shot 300?
Doesn’t the I flight all in one have BLhelli ?
If it does you should be able to use Dshot 600.
Ps I run it on 6S and 5S. I have had freezing on both 5 & 6 cells.
The spike suppressor is unlikely to be the problem. It's more likely a bad capacitor or maybe reroute your wiring.
3.5" sub 250 is where it's at !! I love my babyhawk2.
Out of interest do you have a build video and pid tune for the 95x v2 ?
Thanks. I didn't cover the 95x. It's one of my weird custom builds that flies very nicely and it's busy earning its keep.
@@WhirlyBloke sweet yea just picked it up basically for the value of the vista . But got cinelog25 and cinelog30 too just thought I'd try see if cab get the 95x flying better or strip the vista off it . Keep up the great content , from across the ocean west aust.
Really nice clean build. Your flight video shows some shakes and vibrations at times though. I wonder if your PIDs are bit too high? I'd love to see a BBL.
Thanks. Shakes and wobbles are mostly my crappy old fingers.
Here's another flight ua-cam.com/video/tSbIGcZzoKw/v-deo.html
@@WhirlyBloke I have those too Whirly LOL.
@@WhirlyBloke if you don't mind naked vista and a tight as poop build you should try mine and save your self around 30g which will feel a lot better, locked in and longer flights!
Excellent video! thanks for producing such amazing content! I own a crux35 and recently got some cheap dji v2 googles from a friend (he got the goggles 2 now).
I love the crux35 but i hate how easily the bottom plate breaks. I was thinking to transfer some parts from the crux over to the aos3.5 and add a o3 air unit - staying under 250g should be easy.
Would you do (a) and keep the Happy Model Crazybee F411 AIO with the Happymodel 1404 3500kv motors or (b) uprade and get a Speedy Bee F7 Mini Stack with 1404 xing 3800?
With option A i only would need to buy the o3 air unit and the frame but I feel like the xing 3800 motors together with the speedy bee stack (and blackbox tuning) would make the better performer.
Thank you so much for your kind words and for watching my video! I'm glad you found it helpful.
Regarding your question, both options have their pros and cons. Option A, which involves keeping the Happy Model Crazybee F411 AIO with the Happymodel 1404 3500kv motors and adding the DJI O3 Air Unit, would be a cost-effective solution since you already have most of the necessary components. It should allow you to stay under the 250g weight limit without much hassle. However, the performance might not be as impressive as with Option B.
Option B, on the other hand, suggests upgrading to the Speedy Bee F7 Mini Stack with 1404 Xing 3800kv motors. This combination, along with blackbox tuning, can potentially offer a better performing drone. The Speedy Bee F7 Mini Stack is known for its robust performance and advanced features. The Xing 3800kv motors should provide increased power and responsiveness. However, it's worth noting that this option would require purchasing additional components, which might increase the overall cost.
Ultimately, the decision between the two options depends on your priorities. If you're looking for a budget-friendly solution and are satisfied with the current performance of your Crux35, Option A could be a suitable choice. On the other hand, if you're willing to invest in an upgrade for improved performance, Option B might be worth considering.
Additionally, I wanted to mention that there is a new version of the AOS 3.5 specifically designed for the DJI O3 Air Unit. It integrates seamlessly with the Air Unit and provides optimized performance. So, if you're leaning towards Option B, you might want to explore this new version as well.
I hope this helps you make an informed decision.
@@WhirlyBloke WOW! thank you very much for that fast and informative reply. I think for me its better to invest the 180€ more and get new motors along with the stack. It costs a little bit more but It would my crux35 fully intact and I could use it as backup drone or maybe equip it with gps and use it for some long range crusing. When not pushing to hard I get 11mins flight time - enough time for a propper adventure :)
Looks nice, did I miss battery spec and how many mins flight?
GNB 650mAh and you get 4 mins +
Is there enough room in midsection for a whoop AIO and whoop vtx?
I was going to put HDZero whoop vtx on top of the AIO .
Looks like a good frame.
It's 3.5" quad so things will be tight, but you should be ok.
Good guitar tunes.
Thorr : Guiding Light - bit.ly/3kMtRwk
I just finished my 5.5
have the 5, 3.5 and 7...
think the 3.5 is next will be doing that with a toothFairy2 3"
just waiting on my 16mm motors
How's the 7 looking?
@@WhirlyBloke Still in the unimpressive bag... waiting on motors before I lose the parts...
sturdy though.
I did get countersunk though,
sometimes I skip the battery pad...
don't think there was a Chamfer option though...
but feels sturdy like the others. Excited for the whole kit.
different arms though,, two piece triangles.
NIce build... building one myself atm... Didn't you have to change the alignment of the gyro in config? Thanks
It's a great frame. The FC orientation is diamond and the front is the corner pointing forward so there was no need to change the alignment in BF configurator.
@@WhirlyBloke interesting… I’ve just had to yaw 270 on a beast aio V2 .. ( btflt 4.3 ) .. maybe the V2 is different in that way. .. has a different gyro also..
@@tonhabraken9339 They change components very often to suit price and availability
Would 3,5inch with 1404 motors be able to lift a hero 10 for crousing?
It'll struggle. I use a naked gopro which works great. With a bit of work you can keep the auw just under 250g.
Can you use that spike suppressor on any quad to reduce noise?
Yes, but it's not to suppress noise. That's handled by the low ESR capacitor. The spike suppressor catches any voltage spikes caused by the motor and ESCs that can fry your flight controller. This is more likely to happen on 5 inch quads and bigger, but I fit them to all my quads of there's space.
@@WhirlyBloke thank you!!! I had never heard of it before now. Only ever used caps. That’s nice protection for your FC! I’ll check em out
Is it possible to build this with an O3 air unit and still stay below 250g? I'd love to have a sub250 freestyle rig that still takes great footage.
Absolutely. The latest version of the frame is designed to take an O3 and has mounts that fit the O3 camera. www.aos-rc.com/aos-3-5-v2
@@WhirlyBloke Brilliant! What AIO would one put in there now given that the iFlight F7 Beasts are not available anymore?
@@mhe0815 Either of these are good
ua-cam.com/video/raaOtYwCwn/v-deo.html
ua-cam.com/video/TBM2nubfq_U/v-deo.html
Could someone please point to me where in this video is the receiver for the controller? (I'm new)
It's using the receiver that's built into the Caddx Vista, so no separate receiver is needed.
@@WhirlyBloke Thank you! Your videos are super helpful. Is the caddx vista built in receiver only working with the dji controller or is there a module I can get for others like the zorro?
@@CBikeLondon it only works with the DJI controller. If you're not going that route just use an ELRS receiver and a Zorro.
Can it handle 4S 18650 pack as LR setup?
No problem.
Will it fit a runcam hybrid?
It's designed to fit a 19mm camera so you should be OK.
Morning buddy I was wondering if you had a presets for this aos 3.5 in bf 4.3rc1
I haven't upgraded this to 4.3 yet. I'll publish the diff when I do.
Cool 😎 ty
I have the bits on the way to build this one.
Who hoo.
Did you mount the arms the wrong way around? First time I see them that way. (Compare with all others and you'll see what I mean)
There's only one way to mount them, so yes, they are correct. However, I was one of the first to get the AOS35 and this video was made over a year ago and the design is always being updated. And the arm design has changed quite a bit since then. The truss has changed position so it's about halfway down the arm rather than perpendicular to the body, so my build will look different to the latest builds - my latest build included.
@WhirlyBloke yes I am confused sorry as Chris Rosser has changed the design over time and it looks different from the one I fly.
@@dronevideography I broke a couple of arms early on and reported back and they were subsequently improved. I've recently built one for a customer that's O3 ready and the arms are very different now. I believe the main reasons are improved strength around the motor mount and lower resonance. It's one of my favourite frames.
For sure, I fly it and love it.@@WhirlyBloke
"The holes in here will take that quite nicely".... Something I'd expect your wife to say.
Could you please assemble it faster, I almost caught a glimpse how it all goes together. Well, maybe someone else shows it.
More people complain if the video is too long. The frame assembly is straight forward, but if you miss something, why not just use the settings on the youtube player to set the play back speed slower.
@@WhirlyBloke sorry, bit grumpy at the time. Unfortunately, going slower can not get the frames that aren't uploaded. I can always go faster and skip ahead if the video is too long. There was exactly two videos showing this being built, both going at high speed. Even though I've got it built, I almost always watch somebody do it first because I can learn from their mistakes.
Great video! Nearly the same build as mine: ua-cam.com/video/EQNW_taSa7Q/v-deo.html These 3.5" and 4" sub 250g quads are getting so dialed, I don't have much use for a 5" other than an action cam platform.