GepRC Tern-LR40 HD O3 // DJI O3 // GPS // Beeper

[@ravindupramod5998]

Happy to see 4inch LR. Still not dead😅

[@HrDux]

Yup, I'm probably the one who wrote that those motor wire covers loose adhesion. It happened to my Chimera 7 on both front arms. Don't know if it was because of the summer heat, vibration, dirt and grass getting in there, hitting branches, bad sticky tape iFlight used, or all of the above. The rear wire covers never came off. I just built a Flyflish Volador 5 and it came with those covers. I'll see how long they last. Anyways, I always appreciate your views and reviews. And it's nice to see you flying something a little bigger this time. I love 4 inch quads and long range.

[@NickBurnsFPV]

With your long range flying what are you typical long range environments?

[@HrDux]

@@NickBurnsFPV I live along the Blue Ridge Mountains and a National Park in VA and have some acreage here. So mountain and tree surfing and general exploration flights. Nothing too exciting yet.

[@BrandonBeans]

The tune looks pretty nice for a lr drone. Where I live there is lots of space to explore so this is my kind of drone. With the gps up like that an inbuilt compass will work much better for inav but I would ditch the mast and stick the gps to the topplate. Liion like that you can take to 11v, that's under 3v per cell! After that they sag out fast and you must land asap. O3 has 20gb of built in flash storage for footage. Great review! 👍

[@rainbowrunner1136]

but if u are going to take off the mast, will it be the same as flywoo lr4 in terms of flight characteristics ? What do u suggest, if i want to build my first long range build, try with 4 inch for an year and jump to 7 inch (if so, then which frame is absolute beast of a deal ). ?

[@BrandonBeans]

@@rainbowrunner1136 I am a huge fan of ultralight 5 inch for long range. Aim for sub250 before the battery and you can fly for 20 minutes on an 18650 pack. Make sure you can fit a GPS somewhere but almost any ultralight 5 in frame will work

[@192venom]

I live in Oregon and love the idea of a drone that I can do both some long range and freestyle! So this seems like an interesting drone

[@flat-earther]

hi 192venom, have you become a flat earther yet? If not I suggest viewing the 13 part series _what on earth happened_ in my about to learn how the earth is not a globe

[@popsfitch7938]

Ooooooo yea Merry Christmas and Happy New Year to you and all of yours. Other Pops and Grandma.

[@DroneMee]

Landing a Li-Ion at 3.2v is very safe. Most will land safely down to 2.8v however. This thing can cruise a very long time on the right sized Li-Ion

[@MCsCreations]

Agreed, but I'd aim to 3v... Because when you get to 2.8v you don't have much space anymore, you need to land or it's going to drop.

[@DroneMee]

@MCsCreations Indeed, I too usually land a LiIon at 3.2v unless I required more. I keep that last .4v per cell as my "Emergency Fuel "

[@roberthinterleitner3705]

I tink you can easy go to 2.8, the most ones can go to 2.5v

[@DonJohnsonFPV]

Since 110g low C 1100mAh lipo been released, 200g li-ion 4S pack make no sense on such a light quad.

[@aqua_sakura5021]

W comment

[@edgarvalles]

I love all your reviews especially the fast flights with the freestyle and non freestyle type quads just to see how they handle it with propwash or throttle management

[@gregdavidd]

Thanks for the video. This seems to be a better version of the Flywoo Explorer LR4. I want to convert my Flywoo Explorer over to this frame. Do you think it would fit the flywoo stack instead of the AIO?

[@CarlosRodriguez-vg2ob]

hi nick so i finally got it drone and i love it so far. are all ND3 filters for the HD 03 air until the same or do i need a specific size for this one. if you have an affiliate link to them, please feel free to point me in that direction.

[@NickBurnsFPV]

I believe they should all have the same size, but I can't be 100% certain. Watch for excessive outer dimensions as that could get in the way of seating properly.

[@carbonflightMN]

I notice a slight wobble in the flight, adjusting the Intergal and Differential will smooth that out.

[@kurtzFPV]

Really great review Nick. Just was hoping to see you go plaid though the house for a flight😁

[@lemonsquareFPV]

LoL I have gone all out with a 3” but a deadcat 4” is definitely pushing it! 😜 Mind you I’ll test and tune my 4-6” freestyle builds in the house, but not all out rip, that just sounds like a slippery slope to spackling and painting the walls. 😜

[@NickBurnsFPV]

Yea, not a good idea for me to stay in good standing with the family. next video though

[@dortmunder27xxx]

​@@NickBurnsFPVHallo. Can i fly this Drone with DJI Googles V2 and the DJI remote Controller 2? Greatings from Germany...

[@NickBurnsFPV]

@@dortmunder27xxx yes, get the pnp/O3 version

[@parker1ray]

I currently have two LR quads. Both are M8 modules and both take forever to get enough satellites before taking off. One is the Diatone Roma 4 and that thing shipped with gps disabled. Diatone had so many issues with that quad that they shipped it with the gps turned off. I have been messing with it for 3 years making every modification that I could to get it to connect quickly, and it still takes 10 minutes to lock. I have purchased the Tern with the hopes that I can finally fly an LR quad and get quick consistent locks! My other quad is a DarwinFPV 7" that gets lock after around 3 minutes. I would like to find out what DJI does to get lock in less than a minute. I own a Mini 2 and 3 and these things lock within seconds and work excellent!

[@NickBurnsFPV]

I wonder if dji has some sort of gps preload they put on all or based on region. This is about all I can think of to speed up the gps lock process...but I am far from well informed on gps.

[@squirrelynutz1]

I've gotten 20 minutes with the li ons landing at 3.0v

[@divingfalconfpv4602]

You can go down to 2.5v and it's suppose to bounce back to 3v. Under 3v it starts to drop fast só don't be far away

[@Invid72]

I'll fly mine down to 2.8V. You can go down to 2.5V but it's not worth the danger IMO. Once you hit 2.8V voltage starts to drop off FAST so I land at 2.8V

[@qwer55555555]

hey, does it have hw current sensor? LiIon can go down to 2.7 easly. Some even have cutoff at 2.5. So landing at 2.9 is super safe

[@gravity4514]

Please, convince me to start flying FPV again!

[@popsfitch7938]

It’s fun and exciting, you’ll make memories for when your to old to do anything but sit and drool. you can’t take cash with you so have fun now. What else can I say? Just fly!

[@NickBurnsFPV]

FPV is a joyous escape. Escape out body and mind, all discomfort and any negative thoughts or feelings leave while flying. Only joy in those moments.

[@alvinbrown4295]

I'd like to know will the GPS hold it in a hover. Or does it move around a lot when you hover? Thank you much. And will the DJI Avata 2 Controller bind with it.

[@NickBurnsFPV]

GPS on the types of drones you would see on my channel do not hold it in a hover, gps is used for recovery/return to home on video or control failure. I am not aware of the avata 2 controller compatibility.

[@alvinbrown4295]

Hey, thank you so much😂

[@MountTinMan]

Thank you so much for this video! I just purchased the analog version which is great but I’m confused about the included GoPro mount. It only has 2 ears on it rather than the typical 3 that GoPros slot into. I’m not sure how to mount it. Am I missing something?

[@NickBurnsFPV]

No not missing anything. There are many different mounts for gopros in fpv. Mostly the naked or lite gopro mounts have 1 ear.

[@MountTinMan]

@@NickBurnsFPV Good to know I’m not crazy! Thanks so much for the response!

[@simonemasnata4984]

Hi! Do you think this drone is suitable for cinematic shooting, for example diving? Is it impact resistant? I'm going to go with this frame or a 3.5", and do a cinematic oriented build..

[@NickBurnsFPV]

long range drones are not durable. I don't suggest using it for anything more than experienced slow flat flight

[@simonemasnata4984]

Then probably a build with a 3.5" would be more suitable for me

[@popsfitch7938]

Hey Nick, I have a problem I hope you can help with. After flying my Acrobee75 hd03 and Nickie (Geprc 25) I have problems judging safe flight for my Dji FPV drone. I keep wiping out blades on trees and walls. You fly the tinys a lot then 4and5 inch drones. Any help on what I can do to judge areas where it will fit safely besides slow down and not try gaps? Thanks Other Pops. GB Post script: yup I check the farm with the Dji FPV and this drone is what we need to expand the use for th Radiomaster controler. (I prefer it over the Dji) looks like another addition to our Air Force. thank you again.

[@NickBurnsFPV]

There could be a tip or other way to think of it, but really judging space comes down to having a clear image in the googles and experience. Flying this one I miss judged a few lines but noticed my mistake and made a last second adjustment to avoid a crash.

[@DimmyV]

Im looking to get this as a cruiser. Thanks for detailed review

[@torquilmorrison1283]

you can take li-on way lower - less than 3 volts a cell all the way down to 2.5

[@NickBurnsFPV]

all lithium ion packs?

[@MarkusRessel]

I have the same 3000 mah pack with my LR 4 and went down to near 2.5V (about 2.6V) no problem. Of course there is a lot of sag at that point and the battery gets pretty warm, but plenty of energy left. Pretty sure the same applies to all Li-Ion batteries.

[@vsf1977]

what battery did you use on the long flight?

[@projetcaribou7249]

li-ion can be discharged to 2.4 witout damaging them unfortunatly your quad won't work under 3v

[@dharmaazil]

I'm new comer in FPV Drone, can actioncam put on this bird?

[@gsgiantridered396]

Nah... that Li-Ion flight time isn't representative. You can safely bring those batteries down to 2,5V in theory but at least down to 2,7-2,8V in reality. After 3,0V the battery starts to drop noticeably though & the punch ability get really bad... but if just cruising you still gets minutes of flight between 3,0 & 2,7V. Get 20min+ from my Avant Quads Ciro 4 LR with the same battery... even though I have tri-blades, a camera tilt of 30 degrees & cruises in 60-70 km/h. But the Tern seems to be a bit heavier... so that might shave off some minutes.

[@phiveone]

The reason they get sats even faster on a restart, is the chip has a copy of the previous SVNs (space vehicle numbers) from the earlier flight.

[@NickBurnsFPV]

Exactly, I thought it important to state subsequent plugins would be fast for those that might not have experience with GPS.

[@flat-earther]

hi phiveone, do you know how does a GPS module get it's time synchronized? Because if I comprehended right, the satellites send a signal with their position(coordinates/location above earth) and exact time of transmission, and the receiver receives this signal and compares the time of transmission to the current time to calculate how far the satellite is(the more time difference the more far the satellite is, and vice versa), but if the receiver doesn't have synchronized time how can it know how long it took for the signal from the satellite to be received?! Also I have another question, how can a satellite that's moving know it's own position over earth(coordinates)? Wouldn't the satellite need to use a fixed reference on ground to know it's position? Also how does a warm or hot start help a GPS module get a lock faster? Because between the first cold start and later having a warm or hot start the satellites the module already has in it's memory could have traveled so far they are out of sight so it would then be a cold start again. -- People say that if you want to have a GPS lock faster when you need it you should first turn on your GPS(at home for example) for it to go through a cold start which takes the longest time to obtain a lock and then with the GPS unit's small battery it remembers certain information for a certain period of time, information like it's last location, satellites it discovered, and synchronized time. And later when you are out in the field and turn the unit on again it will go through a so called warm or hot start so it will get a lock faster. I think that would make sense if the GPS satellites were stationary, but I don't get how it works because allegedly GPS satellites are constantly moving(they are not geostationary), so when you went through a cold start and say 6 hours later turn on the unit again and have a warm or hot start, the satellites the module already has in it's memory could have traveled so far they are out of sight(behind the alleged globe) so shouldn't it then kind of be a cold start again? At least from the aspect that the satellites it remembered are not visible anymore. What do you think?

[@mike8984ify]

@@flat-earther The orbits of GPS satellites are precisely controlled and known ahead of time, before the satellite is even launched. They can calculate the atmospheric drag and any other factors that would alter the orbit and adjust for those. Even if it wasn't done that way, you'd still be able to have a network of fixed ground stations and then reverse engineer the satellite location based on where they say the ground station is located. As far as memory, if it remembers a satellite that it can no longer see, then it just drops that satellite. Even though it can connect faster with the memory, that doesn't mean it still doesn't receive the GPS signal. Yes, if you wait enough time for every single satellite to be out of range, then it will act like a cold start. Nothing weird or unexpected about that.

[@Euwanh85]

The review I have been wating for

[@MCsCreations]

Fantastic flying and review, Nick! 😃 The only thing I found weird about this quad is the GPS placement... But if it works... Right? Anyway, stay safe there with your family! 🖖😊 And happy holidays!

[@NickBurnsFPV]

yea, I can't say the current position works better than if it were placed on the top in the same location as the gps mount.

[@dr0n3droid]

Compass ideally needs ~10cm clearance from electromagnetic interference. My 10" will yaw +30°(throttle dependent) while holding original heading when gps/compass is mounted directly on frame. On a mast, she'll fly true. This only really matters in autonomous flight where you're trying to record something. For GPS rescue, who cares if its looking left, as long as its coming home.

[@MCsCreations]

@@dr0n3droid Very true!

[@damianwyczakowski2491]

V2 can connect with o3 but this googles dont record real dvr like in googles 2, thats right.

[@KazanskyAlex]

I was almost to decide that is right drone for me. But unfortunately it's under 250g only with 550 mah battery 😢

[@NickBurnsFPV]

ah, yes we need more weight drop. They did use thicker carbon on the arms than i expected, going with a 'lite' O3 will also drop about 10 grams.

[@NunoFPV]

Nice review Nick, thanks !!

[@Huntmx24]

What do you think is better. The flywoo explorer lr4 or this?

[@NickBurnsFPV]

Man the explorer lr4 was so long ago I really can't remember anything about it. I would have to expect with the lessons we continually learn the new LR40 would be more advisable to purchase.

[@Huntmx24]

@NickBurnsFPV thanks for the reply! I ordered the Geprc Tern last night! Will you be doing more videos on it? Would like to see more! I still need to decide on the radio which I think I've decided the radiomaster pocket as I value the compact size. And debating which dji goggles! Thanks!

[@NickBurnsFPV]

@@Huntmx24I don't have more plans for the LR40, there haven't been two many question that would facilitate a video. As for the goggles I would always suggest going with the latest available in the case of DJI. DJI doesn't have a long track record of backwards compatibility. The V1 goggles already don't work with the DJI O3.

[@Huntmx24]

@NickBurnsFPV which would you chose the goggles 2 or the integra? I like that integra has the battery in the headband and it's a little cheaper. I'd be interested in seeing how well the tern flys with the 3000mah pack doing lite freestyle. Maybe it's to heavy for flips and stuff. I dunno.

[@NickBurnsFPV]

@@Huntmx24 I don't have the integra version, but I would go with those as they are newer and more likely to have longer backwards compatibility.

[@canaweb]

what are those "additional 3D printed mounts" they include? I can't figure out what they're for?

[@PietervanOostwaard]

for adding a aditional 4k cam

[@CarlosRodriguez-vg2ob]

Hi do you have an update for us, have flown some more? Which one do you recommend between this one and the flywoo explorer

[@NickBurnsFPV]

No I have not flown it more. I don't suspect i would fly this one more except for special circumstances.

[@CarlosRodriguez-vg2ob]

@@NickBurnsFPV because is not good? I’m asking because I’m looking to buy one and I was thinking on that one so I wanted an unbiased opinion

[@NickBurnsFPV]

@@CarlosRodriguez-vg2ob No, mainly as I don't go out and fly big open spaces or long range. I fly as in this video my back yard, I have many that I can fly in this space and don't need a large 4inch proped drone to have fun in the back yard.

[@xORLOCKx]

I've gone down to 2.8 on my li-ion packs. Seen some guys go to 2.7. Awesome video as always!

[@NickBurnsFPV]

Seems to be a running theme here. Thank you all for the li on battery information.

[@--JohnDoe]

Nick, what is your job/ income source?

[@NickBurnsFPV]

I have worked in IT since college back in the 90s.

[@loudpackfpv1789]

How’s this compare to the flywoo LR4?

[@NickBurnsFPV]

I don't think I have had the LR4. Sorry I don't cover every long range quad as I don't fly long range.

[@DronePH-2024]

AMAZING TEST SIR thanks for sharing👍👍👍

[@an_o_ia]

impressive

[@revodrvr]

Li ion can go to 2.6-2 7 easily

[@JDDupuy]

DJI...Nope! Not bowing down to the crap they are pulling right now. Build my own with Walksnail or HD Zero. Nice review and I understand why they use the GPS position on this and another of their releases!

[@mwhizzler476]

What crap are they pulling?

[@lemonsquareFPV]

@@mwhizzler476he might be referring to the $30/quad incentive BNF manufacturers are currently getting to exclusively install O3 units. It was supposed to be a price drop for the community, but they spun it to something in their favour. Which honestly with the way recent sales have been and the sanctions, it’s perfectly understandable. I work adjacent to DJI so I’m not the most objective, but I do know most of the supply chain, parts inventories and shipping things, especially in the FPV niche. Even though I got rid of my O3 stuff last December, and primarily fly HDZero (and a bit of Avatar). I’m excited to get O4 the end of next year as it has addressed all of the issues I had with O3. I hope that was holistic enough for you to understand where I stand.

[@Euwanh85]

The monopoly, I sent geprc a message to ask why this was not in walksnail and they said because of the pressure from DJI@@mwhizzler476

[@ItsMeKevinFPV]

Very cool one!

[@jeffersonkoerich6315]

Can you tell me if the connector is xt30 or xt60? the specifications says "xt30" but it looks like xt60

[@NickBurnsFPV]

xt30

[@Super_Mario_Fpv]

Kinda wish they made more hdzero, walksnail options. Seeing dji on almost all bnf options is stupid.

[@NickBurnsFPV]

I agree, and I am hearing rumors on the "why" but nothing I can say with any certainty.

[@Euwanh85]

@@NickBurnsFPV Oh geprc told me because of DJI pressure, when I messaged their support to ask. Something really needs to be done, is that not against fair competition rules?

[@NickBurnsFPV]

@@Euwanh85 I am not sure there are anti competitive rules in business in China.

[@flat-earther]

how much did you pay for this quad?

[@NickBurnsFPV]

I did not pay for this quad. 90% of the items on the channel were sent by the manufacturer for review.

[@flat-earther]

@@NickBurnsFPV thanks for your reply I appreciate it. wow. I didn't recall you mentioning that in the video. do you think it's a good idea to disclose that the seller gave it to you for free in your video? do you think that means you are a shill? do you think it's a biased review when a seller paid or gave a thing for free for someone to make a review on?

[@NickBurnsFPV]

@@flat-earther I have mentioned it in many reviews over the years. To your questions those are not something for me to answer, that is up to the viewer. I don't often get the question of if I paid for it or not, as I am pretty sure in the product review space (FPV or otherwise) it is pretty well known to most.

[@canadiangemstones7636]

People don’t get ethics, so one has to assume all YT “reviews” are actually paid commercials. 😢

[@damianwyczakowski2491]

Hello 👋

[@NickBurnsFPV]

Hello 👋

[@Mupshot]

Too bad they can't make a walksnail version. I personally won't buy from any company that bows down to the pressure.