G+_Andrew Schwenk Posted May 22, 2015 Share Posted May 22, 2015 Hi guys, I asked a question about my quad setup earlier and I got some great advice. I have another quick question though. Here's the problem, when connecting my KK to the receiver using pins 1-5, if I plug them in connecting only the signal pins to 2-4 my Aileron and Elevator controls are swapped. The only way to fix this is connecting channel 1 to 2, and 2 to 1. The only problem is this relinquishes the throttle and rudder due to 3 and 4 being on 1 rather than 2 (sorry for the confusing explanation). 1. Does connecting pins 1-5 directly risk the chance of frying my electronics? 2. If my receiver has 6 channels, doesn't that mean it should be able to handle them all? Or am I insane? 3. Should I snip the red wires on channels 2-4? Or does having a glitch buster/voltage protector stop the need of cutting wires? For those of you wondering I have an Airtronics Aquila 6-Channel remote. Thank you! Link to comment Share on other sites More sharing options...
G+_Michael Heinz Posted May 22, 2015 Share Posted May 22, 2015 I'm afraid I'm still a little confused; but let's see what we can do. First, is this your radio? http://www.airtronics.net/media/uploads/751662_Aquila_Users_Guide.pdf Looking at the diagram on page 8 from the manual, yeah, it looks like the receiver outputs are in a different order from the ones in the receiver Padre used for the original FPV250 kit, but you should still be able to hook everything up. Look at page two of this: http://www.hobbyking.com/hobbyking/store/uploads/861944502X1166223X15.pdf You're not going to be able to use just 3 cables to connect the 5 channels the way Padre did, because Aileron and Elevator are in a different order, but if you use 5 cables you should be fine. Link to comment Share on other sites More sharing options...
G+_Michael Heinz Posted May 22, 2015 Share Posted May 22, 2015 As for snipping the power wires - that really depends on the receiver. The KK won't care. Link to comment Share on other sites More sharing options...
G+_Andrew Schwenk Posted May 22, 2015 Author Share Posted May 22, 2015 Michael Heinz Ok, I don't see any warnings about the receiver, besides on how to pull the wires out. So, I'm really hoping it's fine. Thanks for the help Link to comment Share on other sites More sharing options...
G+_610GARAGE Posted May 22, 2015 Share Posted May 22, 2015 Andrew Schwenk Don't cut a thing, it's perfect. On the kk and the receiver, all of the outputs,/inputs power (black and red) terminals have the same potential. So connecting all channels independently won't hurt a thing because power is going to the same place. I'm a smidge confused on question 2. A remote will be able to control all outputs that it is designed for. So a 6 channel remote and receiver can handle 6 channels. The kk only takes 5 though (elevator, aileron, rudder, throttle, and aux). So with your 6 channel remote, you have a spare, for mabey, lights? Link to comment Share on other sites More sharing options...
G+_Andrew Schwenk Posted May 22, 2015 Author Share Posted May 22, 2015 610bob About the lights, they're soldered directly into the power distribution board, so how would one go about controlling them with the remote? And I haven't gotten it to lift off the ground yet, it's come close though. I'm charging the battery now, hopefully that is the only problem. Link to comment Share on other sites More sharing options...
G+_Michael Heinz Posted May 23, 2015 Share Posted May 23, 2015 In that case, no - I think 610bob was thinking of the case where you get an R/C controlled switch and connect the lights to that. Link to comment Share on other sites More sharing options...
G+_610GARAGE Posted May 23, 2015 Share Posted May 23, 2015 Michael Heinz is right, I was referencing running lights (like the red and green lights on the syma quad). If you want to be able to remotely turn on/of such lights, you can use: http://www.ebay.com/itm/New-Turnigy-Receiver-Controlled-Switch-Relay-TX-RX-RC-Airplane-Lighting-Sound-US-/131170919181?pt=LH_DefaultDomain_0&hash=item1e8a65630d Also, I'm glad your getting close to lift off. Just don't forget to check motor and blade rotation. I have mixed that up many, many times resulting in the quad just sitting there humming. Link to comment Share on other sites More sharing options...
G+_Andrew Schwenk Posted May 23, 2015 Author Share Posted May 23, 2015 Here's a video of it flying at full throttle. https://drive.google.com/file/d/0B4Y1IG0Pm3OuUjVadGJ3SHo2YVU/view?usp=sharing I don't know if it's something remote side, or flight controller side. But I think something is hindering it's full capabilities. Link to comment Share on other sites More sharing options...
G+_Michael Heinz Posted May 23, 2015 Share Posted May 23, 2015 Yeah, that's much lower than expected. 1. How much does it weigh? 2. What type of battery are you using? Link to comment Share on other sites More sharing options...
G+_610GARAGE Posted May 23, 2015 Share Posted May 23, 2015 Also, what are your propellers. They may not be aggressive enough. Link to comment Share on other sites More sharing options...
G+_Andrew Schwenk Posted May 23, 2015 Author Share Posted May 23, 2015 Alright here's the scoop: Weight: Approx. 816 grams Battery: Thunder Power RC 2100mAh 3-Cell/3S 11.1V G8 Pro Lite Plus 25C LiPo Battery Props: HQ Prop 5x4x3 Triple Fiberglass Composite Prop (Green & Orange) V2 Motors: HL2208-15 KV:1100 Esc's: F-30A Fire Red series SimonK-(RapidESC) Flight Controller: KK2.1.5 Multi-rotor LCD Flight Control Board With 6050MPU And Atmel 644PA Remote: Airtronics Aquilla 6-Channel Link to comment Share on other sites More sharing options...
G+_Michael Heinz Posted May 23, 2015 Share Posted May 23, 2015 So, right off the bat your quad weighs twice what mine does and your motors turn at half the speed. Not a good combination. By comparison, my quad weighs about 450 grams and uses 2200kv motors. Link to comment Share on other sites More sharing options...
G+_Andrew Schwenk Posted May 23, 2015 Author Share Posted May 23, 2015 I was trying to build an acrobatic quad.... and I didn't know it was going to cost $600+ until it was too late............. so I'm screwed? Link to comment Share on other sites More sharing options...
G+_Andrew Schwenk Posted May 23, 2015 Author Share Posted May 23, 2015 I guess I should have seen the red flags when my first frame wasn't big enough, and I had to buy another diatone with two decks. So, now I have two frames that don't do anything. Link to comment Share on other sites More sharing options...
G+_Michael Heinz Posted May 23, 2015 Share Posted May 23, 2015 Not entirely. But take a look at the parts lists for quad copters in episode #115 and #142 of Know How. That will give you and idea of what kind of motors and batteries are more appropriate for a 250-class quad. Also - take a look at the parts list for the Alien-X quad. It might be that your best option is to switch to a larger frame and use 10" props to get the lift you need. Link to comment Share on other sites More sharing options...
G+_Andrew Schwenk Posted May 23, 2015 Author Share Posted May 23, 2015 If I were to break down and buy the Alien-x. Since I have low KV motors, and I already have the 30 amp escs. Does that mean I would need to buy a different battery for 10" or 12" blades? Do I need more cells? Higher discharge? Can I do it without spending $600 more dollars? Link to comment Share on other sites More sharing options...
G+_610GARAGE Posted May 23, 2015 Share Posted May 23, 2015 I ran my alienx on a 3s 20c battery, and it worked for a while. Unfortunately the battery died. I think it was due to the high discharge rate. You probly could get away with a 25c battery. Just keep an eye on it and don't run the quad too hard. It would also be better if you use 8" props. I was using 10". Another option might be larger motors and props if they can fit a 250 frame. Link to comment Share on other sites More sharing options...
G+_Andrew Schwenk Posted May 23, 2015 Author Share Posted May 23, 2015 So, for high KV's you want a higher discharge rate and more cells? And for lower KV's you want low discharge rate and less cells? I thought discharge rate was good no matter what... and don't cell just determine the RPM's because of high voltage?? Link to comment Share on other sites More sharing options...
G+_Andrew Schwenk Posted May 23, 2015 Author Share Posted May 23, 2015 Also, can you explain why 8" props would be better than 10" if I'm only spinning at 1100 KV's on 2208 motors? Link to comment Share on other sites More sharing options...
G+_Michael Heinz Posted May 23, 2015 Share Posted May 23, 2015 The term "kV" confused me when I first started with quads. It does not mean "kilovolt", but is a measure of how many RPMs a motor will achieve per volt of power applied. A higher kv rating means a motor turns faster, it doesn't necessarily mean it draws more power. As for 8" versus 10", I can't actually say which would be better. The 10" will probably produce more thrust. Link to comment Share on other sites More sharing options...
G+_610GARAGE Posted May 24, 2015 Share Posted May 24, 2015 Sorry, I confused myself. I thought you were asking if you would need to replace your battery if you got larger motors. So what I was saying with my confused comment is that with 10" props and larger motors, the 25C is on the tight side. So if you wanted to keep your battery, but replace your motor, you should stick to 8" props. The larger the propeller, the more thrust that can be generated, but the more amps that are required to spin it. However to answer the question that you actually asked, I don't know. Since you are running the propellers at a lower rpm, your motors + 10" propellers + 25c battery would probably be fine. Sorry if I got you confused. Michael Heinz ??? KV is for rpms per volt. That's a stupid acronym. Since Andrew Schwenk has a motor with a lower KV, what if he replaced his battery with a 4s. Do you think that the increased rpm would give enough thrust? Link to comment Share on other sites More sharing options...
G+_Michael Heinz Posted May 24, 2015 Share Posted May 24, 2015 A 4S would increase his thrust, but I don't know if it would increase it enough. Link to comment Share on other sites More sharing options...
G+_610GARAGE Posted May 24, 2015 Share Posted May 24, 2015 Yea, thats where torque curves for motors are nice. :) Andrew Schwenk It may be worth trying. It won't be an acrobat quad, but it may fly. Link to comment Share on other sites More sharing options...
G+_Andrew Schwenk Posted May 24, 2015 Author Share Posted May 24, 2015 I've already dismantled the quad completely and gone back to the drawing board. I'm not sure if I want to spend more money, or if I do how much. I might buy a 450 frame, or maybe 2300 kv or more motors. I was planning on buying a 13" macbook pro though. So, even though I love quadcopters, I probably shouldn't be wasting too much money on them right now, since I've put in so much for nothing already :( Link to comment Share on other sites More sharing options...
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