I'd love to see something like this pulled out of a backpack (or even a hip pack) and flying an autonomous search pattern during a wilderness search and rescue mission. Maybe have it ship video feed back to a small base station with visual processing software to spot potential points of interest, and tag them with GPS for further investigation.
Yes, indeed, for uhh... "wilderness research". Mhm. Yup. Totally. Can add in a thermal camera for better resolution and a laser desginator so we can easily track where we spotted each uhh... animal.
Hi , ESC ADVICE , to run smaller dia motor , increase or advance commutation timing to increase torque . increase the pwm frequency in stages to increase efficiency and also raise or lower ramp up power to better match the hysteresis of the magnets and the windings. this helps prevent desyncs and reduces motor temp , And finaly change to d shot 300 or 150 for a more stable less prone to noise signal , Cool project .
Cool plane - cool video. Love your channel. I am just tinkering myself with a long range 47 cm wing. 2s 16850 LiIon. AUW 190g. Motor 1106 did not work 1404 is now perfect. Can cruise more than 1h.
Bravo 👏 great project! For about 10% of the cost you can use an omnibus F4 controller that would provide all the functionality you need. I think for those of us in the hobby of flying things untethered from a computer FPV would be more rewarding. Using expressLRS with a runcam split and a VTX with the omnibus F4 OSD. I’m definitely interested in building the FPV version.
Great concept and execution, as always. My goal one day is to some sort of combination of this + Samm Sheperd's optimized flying wing to figure out the optimized components and airframe for longest endurance. Thanks for making these videos.
@@spartan3299 Thanks! I wish he was still with us. He had some of the best content. I loved his designs and he was a really big inspiration for me in the beginning! I still don't feel like my plane did him justice. But at least I tried!
So freaking cool! The build went completely over my head. I literally need the "for dummies version" on how to make anything like this...or just happily overpay for a turn key build.
I so enjoyed this video. I have flown FPV quads for years and this video really makes me want to get into trying autonomous flight. Again thank you so much for a great quality video.
I don't know, but for such a small wing, it's extra stable. It would be good to share your PID settings so we all can have such stable footage on our wings :) Thank you! My smallest LR/Ardu wing weights at 1080g and is way more unstable than this. Lots of respect for you. The best builder out there!
Have you ever tried coating a polystyrene air-frame in your kevlar/resin mix, waiting for it to harden, then using acetone to dissolve the majority of the polystyrene to reduce weight? Light weight but incredibly tough wings.
I don't have experience with RC planes (or making them) but I have played with 3d printers. Does this sound reasonable: 1. design wing (or segment) in CAD 2. print the skin of the segment with a single permiter and the core of the segment as a 'solid' piece 3. slide skin onto solid core segment and apply kevlar / cf / glass + resin 4. once cured, slide wing + skin off core (more complex wing geometries would require a core that could collapse inwards) 5. (optional as skin should weigh on the order of grams) dissolve skin (with acetone, water, alcohol depending on filament) this would have the same result as what you are proposing, but allow for a 3d printed base part (easier fabrication) and require less material to be dissolved
I would love a nerdy video explaining the full setup and other items needed to run one of these. I fly micro planes already with the same motors and servos. But I run regular hobby grade tx rx. Ivr got my first cheap fpv setup on order already but uav would be fun too. I see the rx you posted that this is using. What do you need on the pc side of things to connect to the plane and program your waypoints?
I prefer Mission Planner on the computer side, but how ArduPilot works is too much to cover in a video. However there are an incredible amount of resources compiled on it out there. Check out ArduPilot.org for starters.
Fantastic little guy! As many of others have already suggested, it would be nice for a build list, how to make it and any other info needed to create one of our own!
Never flew a drone myself and drones here are pretty rare (urban European environment), but I love watching the building process, the result and the flying in your videos. It seems like such a magical experience. Watched al your videos and looking forward to seeing new ones pop-up on my feed!
Outstanding Kavin! If your using a blheli esc you will probably need to lower the number of poles in the blh_ settings in the full parameter list to get those 11xx motors running smoothly.
Expresslrs happymodel ep2 rx - 0.44g with antenna. I'll just leave it here ) For blheli with small motors - you shold play with esc settings (via blheli suite) - esc frequency and demag compensation.
Nicely done with the Insta 360Go camera! Daniel is maybe a bit off and it may be a bit too small to properly FPV with digital but would work for analog. Good fun to send small aircraft out on autonomous missions and have it return! Oh, and I would buy a few as really starting to have fun with the sub-250 world.
I love it! I'm flying the Nano Goblin fpv fun in a carry anywhere size. I would really like to fly this and Sam Shepard's wing. The gasers at our club tolerate my fpv and overly complicated slant to our great hobby.
@@thinkflight it's almost screaming at us!! You have always had great planes, great ideas etc. Now you're presenting them in a much more entertaining way. BTW Daniel is 11/10 at entertaining
Awesome video and project. I am working on a sub 250g autonomous quad build and you inspired me to work a plane next. I am curious if the Dragonlink was a recent purchase?
Great looking design, and awesome video edits! Seems the Tiny wing can capture very stable video. No wing wags, etc. :) Love how most of video was about the plane doing fun stuff; exploring new environments, meeting people and other creatures. Didn't really get an intro to see the lated editor of the plane, until ~10:16. Thanks for some tech insights from 10:40. Realize build was a collage of 3-4 wing design prototypes. Nice to see all the early variations. Would love to know more about the design specs. Took some notes (likely missed many details) Maybe you could add real specs to the video description if so inclined. Realize, you may be still considering tweeks, etc. -- wingspan looks to be 14-16"? (35-40 cm?) -- weight
the nano goblin was always very well received and people still look for the kits. i would humbly suggest there is room for a well designed nano fixed wing fpv platform. it would be amazing to fit an HDFPV goggle feed on a very light frame. so if you are monitoring for interest that's one more plus one on a well designed nano frame. the optimal would have been a nano goblin new or used but just didn't luck out with finding one quickly enough. bought a dart 250 but only after the nano goblin looked prohibitively expensive to find new or too time consuming to find used edit: update to be more specific about a real time HD FPV feed (instead of HD recording)
I can't say enough about this video. Some of my favorite haunts: Big Bear, Owens valley. My FPV version of a friendly drone is the ZOHD with KoPilot FC. The future is here. Great Job!!
Dude, so sick! Either fpv or autonomous flight would be so nice with this build. I’ll join the others in a request for plans! this would be an excellent starter wing.
Awesome project! Why not have have the best of both worlds: automated flight and FPV by swapping out the Insta360 Go2 for the Caddx Peanut (same form factor, but FPV capable).
Make sure you cut the antennas right! Formula 300/frequency in MHz is a full wave . You can make 1/4 or 1/8 wave. Don’t need that heavy wire! Use 22 gauge transformer wire or similar. Tape the wire to the inside of the cavity!
There's lots of tinyewhoops running 0802 motors with blheli_s, so it definitely can run tiny motors. There are a few settings in blheli_s and blheli32 (whichever of the two you're using) that should be adjusted for the specific motors you use. For the standard uses - 5-7inch quads, with around 2306 motors - the default settings are pretty good but I expect that the reason the tiny motors didn't work is because they do need some settings adjustment. There's a few videos on youtube on what each of the settings are for.
WOW! Magnificent! And I got question about your drone. What is the data transceiver you used in such a tiny drone? How could it work in such a long range(12 miles)?
So jealous of those landscapes! How does it handle wind? I've built a small plane like this but it's unbearable for fpv, and down where I live we haven't had a
A friend had the same thing happen but he decided to get it from the farmer's yard himself. Unfortunately right as he was about to pick it up the farmer showed up. The farmer said it was his because it was on his land. My friend begged the farmers to let him have it back. The farmer agreed to play him for it. The game was that each of them would take turns kicking each other in the plums until one of them gives up. My friend agreed and since it was on the farmer's land the farmer got to go first. The farmer was a huge guy and my friend said he kicked him so hard his feet came off the ground. He thinks it took 30 minutes before he could get back up. It took another 30 minutes just to feel like he could take his turn. Right as he was about to kick the farmer the farmer stopped him and said that he could just have the drone back. My friend thinks the farmer might have wanted to just kick someone in the plums for fun. I think he might be right. 🤔
Without a gimballed camera, he's right, it's better as an FPV drone. If you can somehow gimbal and stabilize the camera without adding much weight (I don't think it's possible), it would be more useful as a UAV. Unfortunately, I just don't think the technology is there yet (or at least the required tech isn't available to civilians) to build a functional UAV of this size. This clearly works, but it doesn't seem to have that much real function.
@@thinkflight Although lately youtube corp seems to dislike outside perspectives, I do beg to differ. Based off my infinite research, I don’t believe it’d be propaganda to state you are true gentleman and an aeroscholar. No thanks needed from your end good sir, the pleasure is ours, your audience. So I must Thank you! Cheers, Deal
Very cool! I was wondering, what does an autonomous flight plan look like for this? Is it a sequence of actions, kind of like G-code? e.g. turn to heading 150, fly 100 meters horizontally and +20 vertically, adjust prop power to 80%… this kind of thing? Or does it use absolute coordinates? e.g. fly to lng X0, lat Y0, alt H0; fly to lng X1, lat Y1, alt H1… or maybe a mix of the two?
DUDE! This is amazing! please sell this airframe as a kit, this is one of the coolest plane concepts I've seen!
This is not only a great fpv platform but also a fun autonomous test thingy. I want to build one now!
Me too.
no, did you not watch? it can only be a fpv platform or an autonomous platform and we must FIGHT to determine which it is ;)
I'd love to see something like this pulled out of a backpack (or even a hip pack) and flying an autonomous search pattern during a wilderness search and rescue mission. Maybe have it ship video feed back to a small base station with visual processing software to spot potential points of interest, and tag them with GPS for further investigation.
Indeed, or even a group of them sweep an area, specially at night with an IR camera.
@@iteerrex8166 - Thinking same, adding effective IR would be incredibly helpful.
Yes, indeed, for uhh... "wilderness research". Mhm. Yup. Totally. Can add in a thermal camera for better resolution and a laser desginator so we can easily track where we spotted each uhh... animal.
@@Cristieagle Search and rescue means humans
first of all lower your voice@@Cristieagle
Hi , ESC ADVICE , to run smaller dia motor , increase or advance commutation timing to increase torque . increase the pwm frequency in stages to increase efficiency and also raise or lower ramp up power to better match the hysteresis of the magnets and the windings. this helps prevent desyncs and reduces motor temp , And finaly change to d shot 300 or 150 for a more stable less prone to noise signal , Cool project .
If I remember correctly, the camera you used has a way to rotation stabilize shots with it's built in accelerometer.
I'm not exactly sure how the innards of the GO2 work but yes it is stabilized and always rotates the correct way.
@@thinkflight I think he means horizon lock.
Cool plane - cool video. Love your channel.
I am just tinkering myself with a long range 47 cm wing.
2s 16850 LiIon. AUW 190g. Motor 1106 did not work 1404 is now perfect. Can cruise more than 1h.
Bravo 👏 great project!
For about 10% of the cost you can use an omnibus F4 controller that would provide all the functionality you need.
I think for those of us in the hobby of flying things untethered from a computer FPV would be more rewarding. Using expressLRS with a runcam split and a VTX with the omnibus F4 OSD.
I’m definitely interested in building the FPV version.
Great concept and execution, as always. My goal one day is to some sort of combination of this + Samm Sheperd's optimized flying wing to figure out the optimized components and airframe for longest endurance. Thanks for making these videos.
I could provide a .f3d file of the body of sams wing.
Samm Sheperd was a legend.
I’ve built several of the Samm Sheperds optimised flying wing designs and let me tell you that they’re amazing!!
@@ezrarichardson279 My RC hero!
@@spartan3299 Thanks! I wish he was still with us. He had some of the best content. I loved his designs and he was a really big inspiration for me in the beginning! I still don't feel like my plane did him justice. But at least I tried!
If you sold them as a kit with instructions I'd buy one for sure. Nice work!
So freaking cool! The build went completely over my head. I literally need the "for dummies version" on how to make anything like this...or just happily overpay for a turn key build.
any plans on uploading detailed build instructions? any ambitions to offer a kit version? i think this would be a new bestseller!
Ambitions depend on comments like these!
@@thinkflight Adding another comment like this.
Same
Another one joins the queue
I so enjoyed this video. I have flown FPV quads for years and this video really makes me want to get into trying autonomous flight. Again thank you so much for a great quality video.
Big Bear Lake. Outstanding video on so many levels. 😮
I don't know, but for such a small wing, it's extra stable. It would be good to share your PID settings so we all can have such stable footage on our wings :) Thank you!
My smallest LR/Ardu wing weights at 1080g and is way more unstable than this. Lots of respect for you. The best builder out there!
It’s the insta360 stabilizer
@@philthayer4087 Yeah, but it's not only that.
Have you ever tried coating a polystyrene air-frame in your kevlar/resin mix, waiting for it to harden, then using acetone to dissolve the majority of the polystyrene to reduce weight? Light weight but incredibly tough wings.
I have not, food for thought...
I don't have experience with RC planes (or making them) but I have played with 3d printers. Does this sound reasonable:
1. design wing (or segment) in CAD
2. print the skin of the segment with a single permiter and the core of the segment as a 'solid' piece
3. slide skin onto solid core segment and apply kevlar / cf / glass + resin
4. once cured, slide wing + skin off core (more complex wing geometries would require a core that could collapse inwards)
5. (optional as skin should weigh on the order of grams) dissolve skin (with acetone, water, alcohol depending on filament)
this would have the same result as what you are proposing, but allow for a 3d printed base part (easier fabrication) and require less material to be dissolved
I would love a nerdy video explaining the full setup and other items needed to run one of these. I fly micro planes already with the same motors and servos. But I run regular hobby grade tx rx. Ivr got my first cheap fpv setup on order already but uav would be fun too. I see the rx you posted that this is using. What do you need on the pc side of things to connect to the plane and program your waypoints?
I prefer Mission Planner on the computer side, but how ArduPilot works is too much to cover in a video. However there are an incredible amount of resources compiled on it out there. Check out ArduPilot.org for starters.
This is an amazing project! I may have to build one for myself.
You should!
That flight footage you inserted is gorgeous! Great little plane; well done!
Fantastic little guy! As many of others have already suggested, it would be nice for a build list, how to make it and any other info needed to create one of our own!
The shortage of Nano Goblins is taking its toll on the Friendly Drone idea. We need you to counter the angry drone perception!
The NG was the OG friendly neighborhood drone :(
Never flew a drone myself and drones here are pretty rare (urban European environment), but I love watching the building process, the result and the flying in your videos. It seems like such a magical experience. Watched al your videos and looking forward to seeing new ones pop-up on my feed!
Gratitude
Outstanding Kavin! If your using a blheli esc you will probably need to lower the number of poles in the blh_ settings in the full parameter list to get those 11xx motors running smoothly.
Expresslrs happymodel ep2 rx - 0.44g with antenna. I'll just leave it here )
For blheli with small motors - you shold play with esc settings (via blheli suite) - esc frequency and demag compensation.
Nicely done with the Insta 360Go camera! Daniel is maybe a bit off and it may be a bit too small to properly FPV with digital but would work for analog. Good fun to send small aircraft out on autonomous missions and have it return! Oh, and I would buy a few as really starting to have fun with the sub-250 world.
Thanks again for helping me train my drago- I mean drone, Kavin!
lol
You are a true aero-artist, please show us more of your combined genius!.
Love from Amsterdam !
I love it! I'm flying the Nano Goblin fpv fun in a carry anywhere size. I would really like to fly this and Sam Shepard's wing. The gasers at our club tolerate my fpv and overly complicated slant to our great hobby.
Man this content has gotten to an incredible level. With its own style and personality. Thank you!
I appreciate that!
A mist net might make a good retrieval device, particularly if you and a helper can position it in real time to catch the drone.
Wow! Beautiful footage
I love this. I have been obsessed lately with sub 250g aircraft
The long range from uav setups is always cool, but I like flying it myself.
It's a bird. It's a plane. Nope, it's your friendly neighborhood -Spiderman- Drone.
Very nice. I wish DragonLink would have the Nano available. I have a couple of airframes waiting for it.
Wow, that F7 board looks really cool but is a budget buster. I'd be interested in switching to iNav on a small, cheaper board.
This is the best edited video you've posted. Congrats!
Keep up the great work man!!
You noticed! Thank you
Definitely a step up in production quality in this one! Got some tips from Daniel I’m guessing?
@@thinkflight it's almost screaming at us!! You have always had great planes, great ideas etc. Now you're presenting them in a much more entertaining way.
BTW Daniel is 11/10 at entertaining
What a gorgeous little airframe. It reminds me of the mini ar wing, but smaller. That insta360 go2 is such a wonderful little camera.
Is there now a ARF Kit availible for this awsome little plane?
Where is that flying club and that lake?? Incredible footage!!
Dude what this is amazing and my head is swimming with the possibilities
Awesome video. I fly all sorts of RC but the autopilot setup intimidates me. I’d be interested in seeing a video on that topic. Great job.
Check out Painless360 on TH-cam, he has a lot of great videos on the subject.
love the build and the views, thank you
Awesome video and project. I am working on a sub 250g autonomous quad build and you inspired me to work a plane next. I am curious if the Dragonlink was a recent purchase?
I absolutely love this
Just wow... some of the footage is fantastic... well done on this one guys.. fantastic.
I've never built an RC plane before. This seems interesting
My work is done here... :)
Another great design and incredibly light👏👏
amazing shots!
Great looking design, and awesome video edits! Seems the Tiny wing can capture very stable video.
No wing wags, etc. :)
Love how most of video was about the plane doing fun stuff; exploring new environments, meeting people and other creatures. Didn't really get an intro to see the lated editor of the plane, until ~10:16. Thanks for some tech insights from 10:40. Realize build was a collage of 3-4 wing design prototypes. Nice to see all the early variations.
Would love to know more about the design specs. Took some notes (likely missed many details) Maybe you could add real specs to the video description if so inclined. Realize, you may be still considering tweeks, etc.
-- wingspan looks to be 14-16"? (35-40 cm?)
-- weight
It wobbles but the G02 stabilization removes most of it.
the nano goblin was always very well received and people still look for the kits. i would humbly suggest there is room for a well designed nano fixed wing fpv platform. it would be amazing to fit an HDFPV goggle feed on a very light frame. so if you are monitoring for interest that's one more plus one on a well designed nano frame.
the optimal would have been a nano goblin new or used but just didn't luck out with finding one quickly enough. bought a dart 250 but only after the nano goblin looked prohibitively expensive to find new or too time consuming to find used
edit: update to be more specific about a real time HD FPV feed (instead of HD recording)
Can you make a full build and setup video on this awesome little bird?
What kind of airfoil did you use, and it would be so cool if you could provide plans!!
If we get enough interest maybe we can offer a kit or something
@@thinkflight please
Awesome video with so good HD video abd wonderful landscape.
Need to fly this to Bob Lazars area S4. see if those hanger doors exist.
I can't say enough about this video. Some of my favorite haunts: Big Bear, Owens valley. My FPV version of a friendly drone is the ZOHD with KoPilot FC. The future is here. Great Job!!
@6:40 "how are these birds not freezing to death" lol.
Answer: The same way you are not freezing to death but with a oily coat that keeps them dry.
Can we get a 3d Printable version of this in PLA+ as a comparison?
Awesome.. been trying to make some that can print on a 100x100 bed and wrap in tape
Dude, so sick! Either fpv or autonomous flight would be so nice with this build. I’ll join the others in a request for plans! this would be an excellent starter wing.
6:51 .. what an insanely magical shot
Whats the song?
Awesome project! Why not have have the best of both worlds: automated flight and FPV by swapping out the Insta360 Go2 for the Caddx Peanut (same form factor, but FPV capable).
You have to add weight for the tx and drag for the antenna, but totally possible!
Great job can you please detail all the components, would love to try this.
Check description
@@thinkflight Cheers
I think its a great FPV AND UAV platform
I want two!
One to fly around shooting cool stuff and one to fly around shooting the other one, for even cooler stuff.😉😉
Cool! Easy to replicate with "DEAD SIMPLE 24" wing plans and dollar store foam board (no cutting). I'll use Inav since I know it already!
Please do sell the plans. We want to craft a couple at our makerspace in Connecticut.
That camera does beautiful aerial videos...
This is highly awesome, would be mighty awesome if you sell the CADs or plans :)
The (shotgun) interfers with the connection between the controller and drone line killed me.
(Here to post an actual comment.)
Make sure you cut the antennas right! Formula 300/frequency in MHz is a full wave . You can make 1/4 or 1/8 wave. Don’t need that heavy wire! Use 22 gauge transformer wire or similar. Tape the wire to the inside of the cavity!
There's lots of tinyewhoops running 0802 motors with blheli_s, so it definitely can run tiny motors. There are a few settings in blheli_s and blheli32 (whichever of the two you're using) that should be adjusted for the specific motors you use. For the standard uses - 5-7inch quads, with around 2306 motors - the default settings are pretty good but I expect that the reason the tiny motors didn't work is because they do need some settings adjustment. There's a few videos on youtube on what each of the settings are for.
I would love to build/buy one of these! Perfect plane
Just simply NICE!
What an AMAZING area footage. I love it. Good music 🤘🏻
WOW! Magnificent! And I got question about your drone. What is the data transceiver you used in such a tiny drone? How could it work in such a long range(12 miles)?
autonomous- vs active controls power use is super interesting
So jealous of those landscapes! How does it handle wind? I've built a small plane like this but it's unbearable for fpv, and down where I live we haven't had a
Finally! A plane Harry can’t crash!
Amazing idea! Also, why not both an FPV and UAV?
Really Amazing Project! The Dart 250G is a perfect alternative for people who dont have your building skills and tools. It will fit the same use case.
Indeed!
A friend had the same thing happen but he decided to get it from the farmer's yard himself. Unfortunately right as he was about to pick it up the farmer showed up. The farmer said it was his because it was on his land. My friend begged the farmers to let him have it back. The farmer agreed to play him for it. The game was that each of them would take turns kicking each other in the plums until one of them gives up. My friend agreed and since it was on the farmer's land the farmer got to go first. The farmer was a huge guy and my friend said he kicked him so hard his feet came off the ground. He thinks it took 30 minutes before he could get back up. It took another 30 minutes just to feel like he could take his turn. Right as he was about to kick the farmer the farmer stopped him and said that he could just have the drone back. My friend thinks the farmer might have wanted to just kick someone in the plums for fun. I think he might be right. 🤔
It's an old joke, but that doesn't mean it's not funny :)
Made me laugh...
@@hoagy_ytfc Do you remember what they were fighting over in the original version?
@@hoagy_ytfc Nope. Lies are a boring waste of time. If he'd started the comment with "A joke for you guys" then at least it would've been funny.
YEAH, Well done mate! Beautiful footage, Run the same flight paths throughout the year - People will pay for that realestate.
A cracking little machine, nice one. 👍
Appreciate that!
Happy to find this! Subbed!
Sweet little thing!
Out Phuckin Standin!!!
Like to see more on how the dragonlink and mission planner are setup. That's always pain for me too.
Please can we have plans or maybe even a kit I will totally buy it
please show us some more details about this!! plans etc, i'm honestly very interested in building this thing for myself
Great project, great video, liked the humour. Thanks for showing us what is possible.
DJI Action 2 would be also a great camera with 56g a bit heavier, but supports 4k 120fps and flat profile.
Without a gimballed camera, he's right, it's better as an FPV drone. If you can somehow gimbal and stabilize the camera without adding much weight (I don't think it's possible), it would be more useful as a UAV. Unfortunately, I just don't think the technology is there yet (or at least the required tech isn't available to civilians) to build a functional UAV of this size. This clearly works, but it doesn't seem to have that much real function.
wow this was insane
Cool project!
Some totally beautiful footage :)
did you try adjusting the ESC timing with those tiny 110x motors?
Yes
@@thinkflight I'd assume you lowered the PWM rate as well?
@@gadgetmerc The rate or the limits? I did nothing with rates.
You’re the man
Not really but thank you :)
@@thinkflight Although lately youtube corp seems to dislike outside perspectives, I do beg to differ. Based off my infinite research, I don’t believe it’d be propaganda to state you are true gentleman and an aeroscholar.
No thanks needed from your end good sir, the pleasure is ours, your audience. So I must Thank you!
Cheers, Deal
Very cool! I was wondering, what does an autonomous flight plan look like for this? Is it a sequence of actions, kind of like G-code? e.g. turn to heading 150, fly 100 meters horizontally and +20 vertically, adjust prop power to 80%… this kind of thing? Or does it use absolute coordinates? e.g. fly to lng X0, lat Y0, alt H0; fly to lng X1, lat Y1, alt H1… or maybe a mix of the two?
Check out how Mission Planner works, thats what I use.
I love everything about this project except the FC...$349 ouch!. Matek H743-Slim is now compatible with Arduplane for the fraction of the cost.
Great video, thanks for sharing
I might have missed it, but how long does it stay in the air with that 2 cell?
18-20min