The Detrum RC system with flight stabilizer/RTH (part 1)
This is going to be a two part review because i've given up waiting for the weather to cooperate i'm going to do the bench side. First, a little bit of look at the technology, look at what they're doing here and where it might fit into the market. And what have i got? Well. I'Ve got a transmitter, a receiver gps, a little three in one control unit and then some 3m things and, of course, i've got some instructions. So what am i looking at here? We'Re looking at a this, is a transmitter from a company called detrum. Now i hadn't heard of detriment before they sent me this stuff, but everyone i've spoken to about them, says good things of them, so hey. Maybe this is going to be a very pleasant surprise. Now. This transmitter here is obviously inspired by a very well known brand. This is called the blitz dt9 and i think we know which brand has inspired this. In fact, i think there may be some compatibility between this and the brand we're talking about because they say they've got this. This dt link, which is a frequency hopping, spread spectrum and direct sequence, spread spectrum, which is exactly how dms x works, so we'll find out. We'Ll, do some testing later on see whether this can work with your favorite spectrum equipment but hey, as i say, inspired by spectrum now to be a little bit subjective i'm, not a fan of the case, color, honestly i'm, not a fan um.
It probably won't show the marks if you drop it in the mud, but that's, probably it's, only redeeming quality. However, the people at detroit said we do have a silver one and, to be totally honest, i like things that are a bit different, but i would go for silver over this color but it's a personal choice, nothing um, nothing to be really said other than that. Now one thing that impressed me was they said: what mode do you want? I said mode one and look: they sent mode one. That means they listen now. We'Ve had a few companies recently that don't listen and don't really care, but obviously drum is listening and they went to the trouble of setting up transmitter mode. One for me, which is great, makes my review process so much easier. If only the weather would do the same right, so what have we got here? Well, it is a nine channel radio transmitter 2.4 gigahertz spread spectrum not much to see there. I mean you know dimer doesn't, so so why am i reviewing it? Well, you know there have been a million and one spectrum clones. Why would i review this one? Well because it's what they've got here that makes the difference now. This is a receiver, pretty big receiver, isn't it but it's, not just a receiver it's a receiver and flight controller autopilot flight controller, which is kind of good because it has a gps. There you go all the normal flight control operation is returned to home.
That sort of thing, but you don't, have to get carried away doing stuff like that now this is the other way of putting a flight controller in your model. You get yourself one of these boards from china and you flash inevitable or are you pilot onto it and you get lots of soldering done you'll wire up and there's bits everywhere. It looks like a giant mess, um that's the cheeky way of doing it. Now a lot of people would love to have a model with them return to home and an autopilot in it, but they they just don't, feel confident with all the soldering and the wiring and all that sort of stuff that's involved. This is the answer to that. Now there's been a few products like this come out recently, the zod, h or zhd have brought out their co pilot, which is a similar super, simple flight control system and then there's this now. This is even simpler than the zod, because this has the receiver built and you don't even have to connect the lead from the flight controller to the receiver. It'S all done internally. Look at this plug your servos in plug your servos in along there plug the gps. In along here, well they're interesting, they don't give you there's no polarization on this connector. I suspect you won't be able to damage anything, but if you plug it in backwards, it probably won't work um. If i can get it in the hole, it was much easier before here we go so you plug a gps in you plug your servos in you bind it up and you fly what could be simpler and to make life even simpler and one of the problems With these minimal, or these super simple flight controllers, like the xeo, hd and and not so much this one, but certainly with the zero hd, is that to get simplicity, you sacrifice function right now.
The beauty of the the eye nav or the rg pilot setup like this is you can go in on your laptop or whatever you can configure all the parameters you ever want. How high it's going to fly when returned to home the diameter or the radius of the turn circle when you're in position hold all those things can be programmed through your computer, but a lot of people might be a bit tech phobic. They don't get involved with computers it's all too much good to get the right software installed. You get. The drivers installed on your computer you've got to sort out the conflicts. It can be a nightmare on its own, but a system like this. It sells you on the simplicity. They even give you this little box here. This little box here is the is the controller for the system, so you don't need you don't need to have your own computer or anything. It comes with. A controller comes with a little cable bang on the camera. It comes with a little cable, so you plug cable in there into the receiver. Bing bing bing bing set up all your things using that little standalone butter kit. So you can go to the flying field. You can change parameters without having to take your laptop with you bonus points for that so um. This really is kind of it's, more configurable than the xeohd copilot, but it and it's even simpler, because it has this built in receiver and this dedicated little controller, which also doubles as a battery tester.
I mean why wouldn't you it's got if you're building something with an lcd screen. Why not just double up? I think it also might even do a esc testing and it's got other options as well, so i don't know we'll find out when i do the full review. What i wanted to do in this video was get the review process started because i'm waiting for the weather and find out from you guys if you've got any specific questions you want to know and things that i can test during the test now i've got to Put this in an aeroplane of course, hahaha. It is a fixed wing flight control, it's, not a quad controller. At least i didn't see any mention of quads. I think it says it is for. Let me read this out: um suitable for normal wing flying wing and v tail airplanes. There you go so that's what it's suitable for so we'll set up on a plane, i'm, not sure what i'll use it in. I was going to put it in. Perhaps the sub 250, but i this would obviously take it over 250. it's, not heavy, but i mean one of the things i've noticed immediately is look at the length of this gps, cable, it's, probably a little excessive for most small model installations. So i'm thinking i've got my old hobbyking epp fpv model. I haven't flown that for over 10 years. I think i might haul that out of the dust fire it up, put this in it and we'll use that as a flying test.
Bed and the weather is supposed to improve in the next few days, so part two should be coming really soon, but in the meantime let's say: if you've got questions anything you want to know about the system and any particular tests you want me to do. Then please say so now. One other point i should point out, which is probably, i think the biggest weakness of these super simple systems is. There is no osd there's, no osd, with your with your f4 flight controllers and your inv and stuff. You can have an osd there, that's really handy, because it tells you you're out all the information information. You want altitude, uh distance from home direction to home. Your coordinates, your speed, all that sort of stuff which is really kind of nice to have this, where you're gon na fly beer back, but you know to be totally honest. I fly bareback anyway. I generally have the osd turned off on my fpv equipment, because, as long as i can tell when i'm under 400 feet, i know which way is home and i don't really fly that far away most of the time. And if i do, i've usually followed a fence line or or a sort of track in the paddocks and things, so i know how to find my way back. I don't need the return to home. It is handy if you're testing something out, because if something goes wrong, you lose your video flick, a switch.
It flies back to you, but if you want osd, this is probably not the system. Although you could to be fair, you could buy a separate osd, but you're going to need a separate gps and things that's really not suitable. This is for someone who wants to have an rc system with stabilization and return to home and doesn't want to mess around with a lot of wiring. It doesn't need an osd, it might not even be flying fpv i mean you might want to fly this just for extra confidence and extra control on a line of sight model, and if it gets too far away, you get the siren to flick. Switch turns around comes back bit of an update, i've done some work and, as you can see, i've put this the receiver, the actual receiver flight controller needs to be placed near the center of gravity. They say that's because the accelerometers don't want to be too far from the cg. Otherwise they tend to give the wrong readings. Gyros don't care, but accelerometers do like to be close to the cg so that there's there's, less acceleration forces it's more balanced um. So i've had to put this here on the i'm using the hawke's guy, the dynam hawks coach, pretty much a bixle in any other flavor um, so i've had to cut a bit out the top put it there, but it's i'm a little. You know the the receiver is quite big and also the way it's set up.
You can have a couple of orientations you get it upside down or on its side or flat like this, but this bit has to point to the front. According to the instructions, the antennas come to the front, which means it's a long run for the servo wires. All the way down there to the back may be an issue on some planes there's a bit of an issue on here about to use some extensions on the standard survey connections and the other thing is. I thought this gps thing is just too big and bulky and thick and like, and also i noticed that they had to peel back some of the heat shrink around there, because it wasn't staying it wasn't even staying in it was too loose. It would work free, but you see how much height is required for this gps lead here on a smaller foam model like this it's really there's, not a lot of places to put it because on the hawks guy, your battery takes up all this front compartment here. There'S they've got push rods and things there's no real place to put it in the back there. This is really the only place to put a flight controller on a hawk sky uh. If you want to fly fpv as well so it's gon na have to go in here this wires to poke out in the breeze and i've got so much extra length here and it's, so it's, not flexible, it's, pretty stiff.
I don't know where i'm going to put the gps. I don't want to put it directly above the esc, because it's going to create a lot of noise, i was going to thinking of putting it up the front here: that's, quite a long, cable run but i'd. Rather, have my fpv gear up the front i'm, not sure what i will do, and also i mean, even if i put up the front i'm, going to run this down under there's, going to be a big loop poking out here. It is, i think, ditrum could do a lot better in terms of cabling and orientation options um, because this is just you know, it's a little bit difficult, certainly on this model. Other models where you got more room, probably not an issue, but i suspect a lot of people if they want to get. You know a lot of people fly phone models like this and smaller models becoming the norm so having something that's, big and bulky like that. Not the best option: okay, admittedly, if you're going to use an f4 omnibus or something in there, it's going to take up as much room but but your options, your cabling options, are much improved. You can have your receiver way down here in the guts of things, and there is a separate standalone version of this. You don't have to use the one with the built in receiver. They do have a standalone, so i'm going to have to do a bit more work to get this practically installed, not a problem, and i will continue doing that.
Hopefully, hopefully i'll get some flying out of this tomorrow. I have to set up the transmitter i'm. Not a i'm, not a spectrum guy, i don't know the model, the the menus and everything i didn't get a manual this one, probably online so i'm, going to have to fudge my way through that to use the spectrum gear set up the throws and expos and All that sort of stuff channel directions that sort of thing so yeah we'll carry on but yeah this gps thing. If, if i was going to be using this, i would just replace this with a much more flexible, shorter cable, because, ideally it should just come straight out onto the wing end connectors that's, what i say to uh to ditrim end connectors don't don't, these top connectors A bit old school, most receivers these days have n connectors, far kicks everything low profile. If we had any connectors and we could put the receiver the other way around, this would be a very simple install. So just you know just a few. I try to give constructive criticisms where i can and i'd say to ditrim. If this thing electronically is good, i'd love to see a version with end connectors so that it would just fit in there so much easier and i suspect, it'd fit into a lot of other models. So much more easily than is the case with this installation.