Posts: 2 Threads: 1 Likes Received: 0 in 0 posts Likes Given: 0 Joined: Nov 2017 Reputation: 0 Following on from Oscar's excellent review, I was just wondering:
Do you prefer prefer the Kopis over the gt200N (could you please tell me how they compare)?
Also, the code kopis1b does not seem to exist on gb site(?) - how much discount is this supposed to give.
Thanks for any advice/help? ![[-]](https://intofpv.com/images/collapse.png) • Posts: 5,315 Threads: 672 Likes Received: 3,155 in 1,743 posts Likes Given: 2,030 Joined: Jan 2016 Reputation: 139 05-Nov-2017, 01:58 AM (This post was last modified: 05-Nov-2017, 02:02 AM by Oscar.) Sorry for the delay, just saw your question. Both are very good quads, if I have to be totally honest, I do prefer the Kopis 1 over the GT2017 (aka GT200N) for the following reasons. (sorry Diatone!) - Prices are similar, but the Kopis comes with Frsky XSR pre-installed, so you basically just need to bind it and get flying. Easier for Frsky users. For the GT2017 you will need to buy the RX separately and install it yourself, just extra work - Kopis has a much better flight controller (Kakute F4), it's better designed and more powerful than the F3 FC in the GT2017 - The VTX on the Kopis is also a great product, it has Tramp telemetry and you can do VTX control with it, very handy - i feel like the Kopis flies better, because it's over 80g lighter despite the GT2017 has more powerful motors. To me, the Kopis performs more agile and efficient. - Frame design wise, both are similar. I personally would love to see more camera protection in both frames... and I really don't like the stretch X design since I mainly fly freestyle (ish) LOL  I will probably swap out the frame in the future... Gearbest sent me the coupon code in an email, they told me the price can be reduced to $250 with the code and I thought that is a very good deal. Sorry if it doesn't work! i will check with them later. • Posts: 2 Threads: 1 Likes Received: 0 in 0 posts Likes Given: 0 Joined: Nov 2017 Reputation: 0 05-Nov-2017, 10:00 AM (This post was last modified: 05-Nov-2017, 10:13 AM by Rishi.) Thank you for your helpful reply, after reading which, I ordered the Kopis :-)
I recently ordered gt200n, but couldn't resist getting a Kopis too after reading your comments about it. I will probably use my usual Aomway antennas with it though (and as I've never flown a stretch X before, will be keen to see whether I like it and if not, will swap out the frame as you suggest you may do)!
Thank you again and I look forward to more of your excellent write ups! • Posts: 1,590 Threads: 89 Likes Received: 1,283 in 768 posts Likes Given: 1,274 Joined: Jan 2017 Reputation: 31 If anyone else was wondering like I was where the reviews on both of these were here are the links Kopis GT 2007 / gt200n as it's sometimes listed Great reviews on both to Oscar BTW... After reading up on the kopis, maybe after my 3rd build (which right now all I have are a set of SunnySky ESCs - Thanks to Oscar - and a receiver for) I'll give a BNF a try afterall. Why not... 3 builds and 3 boughts... sounds like it'll keep things even. Owning the older version of the GT 2017, I can say that they really did fix 2 or 3 of my more significant issues on the Diatone, but there are still a couple of things that make me uncertain about it. I can tell you that my diatone quad has taken a ton of beatings and the only part I've ever had to replace or even worry about is that unprotected camera. I hate the space for the action cam on top and as a result I rarely fly it for freestyle videos (although I recently did use it for some freestyle flying). but it's a decent little quad otherwise. I have no experience with the Kopis yet, like I said though... that may change in the future. carl.vegas
Current Quads: Operational: Diatone GT2 200 In need of repair: Bumble Bee, tehStein, Slightly modified Vortex 250 Posts: 6 Threads: 0 Likes Received: 6 in 2 posts Likes Given: 0 Joined: Aug 2016 Reputation: 0 (05-Nov-2017, 01:58 AM)Oscar Wrote: Sorry for the delay, just saw your question.
Both are very good quads, if I have to be totally honest, I do prefer the Kopis 1 over the GT2017 (aka GT200N) for the following reasons. (sorry Diatone!)
- Prices are similar, but the Kopis comes with Frsky XSR pre-installed, so you basically just need to bind it and get flying. Easier for Frsky users. For the GT2017 you will need to buy the RX separately and install it yourself, just extra work
- Kopis has a much better flight controller (Kakute F4), it's better designed and more powerful than the F3 FC in the GT2017
- The VTX on the Kopis is also a great product, it has Tramp telemetry and you can do VTX control with it, very handy
- i feel like the Kopis flies better, because it's over 80g lighter despite the GT2017 has more powerful motors. To me, the Kopis performs more agile and efficient.
- Frame design wise, both are similar. I personally would love to see more camera protection in both frames... and I really don't like the stretch X design since I mainly fly freestyle (ish) LOL I will probably swap out the frame in the future...
Gearbest sent me the coupon code in an email, they told me the price can be reduced to $250 with the code and I thought that is a very good deal. Sorry if it doesn't work! i will check with them later. Hi Oscar, in your Kopis 1 review, you mention that you couldn't get audio from the mic on the Atlatl through to your goggles. Did you solve that, and if so, how? I'm having the same problem and I'm a bit stumped since everything looks to be wired properly. Thanks! • Posts: 5,315 Threads: 672 Likes Received: 3,155 in 1,743 posts Likes Given: 2,030 Joined: Jan 2016 Reputation: 139 (05-Nov-2017, 12:36 PM)Carl.Vegas Wrote: If anyone else was wondering like I was where the reviews on both of these were here are the links
Kopis
GT 2007 / gt200n as it's sometimes listed
Great reviews on both to Oscar BTW...
After reading up on the kopis, maybe after my 3rd build (which right now all I have are a set of SunnySky ESCs - Thanks to Oscar - and a receiver for) I'll give a BNF a try afterall. Why not... 3 builds and 3 boughts... sounds like it'll keep things even.
Owning the older version of the GT 2017, I can say that they really did fix 2 or 3 of my more significant issues on the Diatone, but there are still a couple of things that make me uncertain about it. I can tell you that my diatone quad has taken a ton of beatings and the only part I've ever had to replace or even worry about is that unprotected camera. I hate the space for the action cam on top and as a result I rarely fly it for freestyle videos (although I recently did use it for some freestyle flying). but it's a decent little quad otherwise.
I have no experience with the Kopis yet, like I said though... that may change in the future. Thanks Carl  If you plan to own a new quad, yes the Kopis is definitely worth considering So far my only complaint is the frame, and that's all... (05-Nov-2017, 11:38 PM)Zzyzx Wrote: Hi Oscar, in your Kopis 1 review, you mention that you couldn't get audio from the mic on the Atlatl through to your goggles. Did you solve that, and if so, how? I'm having the same problem and I'm a bit stumped since everything looks to be wired properly. Thanks! Nope... still not working. It looks like there is a mic on the VTX but it makes static noise. I asked Holybro in an email last week but they haven't replied yet. • Posts: 5,315 Threads: 672 Likes Received: 3,155 in 1,743 posts Likes Given: 2,030 Joined: Jan 2016 Reputation: 139 (05-Nov-2017, 11:38 PM)Zzyzx Wrote: Hi Oscar, in your Kopis 1 review, you mention that you couldn't get audio from the mic on the Atlatl through to your goggles. Did you solve that, and if so, how? I'm having the same problem and I'm a bit stumped since everything looks to be wired properly. Thanks! Just following up on the Mic issue, Holybro confirmed there is a problem with the Mic they are using, it's unlikely we can get it to work on our VTX unless you know how to swap out the mic yourself. They will try to get a different mic supplier and fix it in future batches. • Posts: 6 Threads: 0 Likes Received: 6 in 2 posts Likes Given: 0 Joined: Aug 2016 Reputation: 0 (06-Nov-2017, 02:24 PM)Oscar Wrote: Just following up on the Mic issue, Holybro confirmed there is a problem with the Mic they are using, it's unlikely we can get it to work on our VTX unless you know how to swap out the mic yourself. They will try to get a different mic supplier and fix it in future batches. Thanks for following up! I haven't looked, but I'm pretty sure I can swap it out. I assume it's just soldered to some pads or throughholes. Did they recommend a mic that will work? Or do you have a recommendation? I typically use something like the FA-MT01: http://www.banggood.com/FA-MT01-6-12VDC-...82003.html These little electrets often work well (and are volume-adjustable): https://www.adafruit.com/products/1063 Thanks, Paul • Posts: 5,315 Threads: 672 Likes Received: 3,155 in 1,743 posts Likes Given: 2,030 Joined: Jan 2016 Reputation: 139 (06-Nov-2017, 04:10 PM)Zzyzx Wrote: Thanks for following up!
I haven't looked, but I'm pretty sure I can swap it out. I assume it's just soldered to some pads or throughholes.
Did they recommend a mic that will work? Or do you have a recommendation?
I typically use something like the FA-MT01: http://www.banggood.com/FA-MT01-6-12VDC-...82003.html
These little electrets often work well (and are volume-adjustable): https://www.adafruit.com/products/1063
Thanks,
Paul Sorry, i have no idea and not planning to fix it, but I recommend get in touch with their support if you want to do it • Posts: 6 Threads: 0 Likes Received: 6 in 2 posts Likes Given: 0 Joined: Aug 2016 Reputation: 0 06-Nov-2017, 07:21 PM (This post was last modified: 06-Nov-2017, 07:52 PM by Zzyzx.) Hmm, on the Atlatl there are a pair of pads for the mic - one labelled with a + and the other unlabelled. Would you think that the + pad is for the audio signal, and the unlabelled pad is for ground? The mics I'm used to have three pads - +V, GND and audio signal. I would assume connect audio to the mic + pad on the Atlatl, connect the grounds together, and supply the mic with +V from wherever? I guess since the supplied Atlatl mic only has an audio (+) and ground, it implies the Atlatl mic is not powered and has no pre-amp of any sort? Would a mic with power and a pre-amp work on the Atlatl? Any help understanding these different types of mics greatly appreciated, thanks!
(06-Nov-2017, 07:13 PM)Oscar Wrote: Sorry, i have no idea and not planning to fix it, but I recommend get in touch with their support if you want to do it I did ping their support. I'd like to get it working, but confused about the mic (see above). I suppose I could just swap the whole thing with a Unify, but that's kind of defeating the purpose of the BNF... Thanks, Paul • Posts: 6 Threads: 0 Likes Received: 6 in 2 posts Likes Given: 0 Joined: Aug 2016 Reputation: 0 07-Nov-2017, 08:11 PM (This post was last modified: 09-Nov-2017, 11:57 PM by Zzyzx.) (06-Nov-2017, 07:21 PM)Zzyzx Wrote: Hmm, on the Atlatl there are a pair of pads for the mic - one labelled with a + and the other unlabelled.
Would you think that the + pad is for the audio signal, and the unlabelled pad is for ground?
The mics I'm used to have three pads - +V, GND and audio signal. I would assume connect audio to the mic + pad on the Atlatl, connect the grounds together, and supply the mic with +V from wherever?
I guess since the supplied Atlatl mic only has an audio (+) and ground, it implies the Atlatl mic is not powered and has no pre-amp of any sort? Would a mic with power and a pre-amp work on the Atlatl?
Any help understanding these different types of mics greatly appreciated, thanks!
I did ping their support.
I'd like to get it working, but confused about the mic (see above). I suppose I could just swap the whole thing with a Unify, but that's kind of defeating the purpose of the BNF...
Thanks,
Paul Still trying to figure out the mic thing, but in case anyone is following along... The mic used on the Atlatl seems to be a simple electret mic. Two leads only. I think like this: https://www.amazon.com/Cylewet-Cylindric...B01N0VMN9P EDIT: Holybro replied and said the model is "MIC-4015". Well, that's not really a model number that exists, but I'm guessing it is a CUI CMC-4015-40P. We'll see... The simple 2 lead electret mics generate their own current, so they don't use external power, only having the audio out (+) and GND (unlabeled) connections. EDIT: Actually the supply power (typically 2-3V) is piggybacked along with the audio signal, so the two leads carry both power and audio. Still not sure if a 3-wire mic would work, but I think so (like the FA-MT01 I linked to above). The 3 wire has an internal powered pre-amp, so it used +VCC (usually 5-12V), GND and audio out. The gotcha might be if the pre-amp signal is too much for the Atlatl circuit, it might be designed to only handle the electret output? I'm going to order an electret, and I already have the pre-amped mic, and try them both and report back if I get audio working... Posts: 2 Threads: 0 Likes Received: 2 in 1 posts Likes Given: 1 Joined: Feb 2018 Reputation: 0 Hey Zzyzx,
did you have any success fixing the mic?
Best,
bRick • Posts: 6 Threads: 0 Likes Received: 6 in 2 posts Likes Given: 0 Joined: Aug 2016 Reputation: 0 05-Feb-2018, 07:57 AM (This post was last modified: 05-Feb-2018, 07:59 AM by Zzyzx.) (04-Feb-2018, 05:01 PM)bRick Wrote: did you have any success fixing the mic? Yep, sorry, I should have followed up, hard to keep track of posts across a zillion different forums. I bought this "CUI CMC-4015-40P" mic from Arrow Electronics: https://www.arrow.com/en/products/cmc-4015-40p/cui-inc It looks to be exactly what was on my Atlatl. Soldered out the old one, soldered in this one, works OK. I'm not thrilled with the sound quality, has a little too much low-mids frequency, or not enough higher-mids to hear the motors more clearly, it's a little muddy. I think I need to put some additional foam over top of it to kill some more of the wind noise. Posts: 2 Threads: 0 Likes Received: 2 in 1 posts Likes Given: 1 Joined: Feb 2018 Reputation: 0 (05-Feb-2018, 07:57 AM)Zzyzx Wrote: Yep, sorry, I should have followed up, hard to keep track of posts across a zillion different forums.
I bought this "CUI CMC-4015-40P" mic from Arrow Electronics: https://www.arrow.com/en/products/cmc-4015-40p/cui-inc It looks to be exactly what was on my Atlatl.
Soldered out the old one, soldered in this one, works OK. I'm not thrilled with the sound quality, has a little too much low-mids frequency, or not enough higher-mids to hear the motors more clearly, it's a little muddy. I think I need to put some additional foam over top of it to kill some more of the wind noise. Thanks! I just ordered two similar mics - I will post an update as soon as they arrive and I found time to solder them. |
