Turnigy 9X not working?

I have a Mode 2 Turnigy 9X transmitter for my quad-copter (3DRobotics APM 2.6) and it worked almost perfectly at first for a $90 controller. After not using it for a while, I tried using my quad-copter and it wouldn't arm (start). I plugged it into my PC to check the transmitter settings in the APM program and the sticks do not work anymore. The left stick does not show movement values at all and the right stick (throttle) does not go to the lowest value (~900) anymore, only to the highest. The left stick is what is used to start the quad, which is why it wouldn't start in the first place. Why would the sticks suddenly stop working? Also, about a week earlier, a screw fell out of the inside of the transmitter (heard it rattling inside). Would this have anything to do with it?

Question by Arya42   |  last reply


Drone not turning on? Answered

I have an Ardupilot 2.6 from 3DRobotics on their quad frame. I am using their power distribution board now instead of using one that I made myself. Before I changed the power board, my drone was working perfectly. Now when I try to arm it (enable the motors) it does not work. The light on the APM 2.6 blinks red when disarmed and is solid red when armed. It only blinks when I try to arm it. I am using a Turnigy 9x transmitter with a turnigy RX. I have tried replacing the RX and it does the same thing. I have a separate battery pack for the receiver because it seemed like it was not getting enough power with the 3DRobotics power board. Could it be a problem with the transmitter?

Question by Arya42   |  last reply


FPV Quad-copter Build?

I want to build a Quadcopter with some specifications: -GoPro Hero3 Mount -Additional wireless onboard FPV camera -About a 2 mile range -GPS to return to certain location  -30 minute battery life My budget would be around $200-500 Is this build possible? If so, is my budget enough? or is it going to cost more? May anyone help me on the specifications on the hardware (Motors,ESC's, Flight Control, GPS)

Question by joselalala   |  last reply


Quad Copter LED Controller? Answered

I have four different colored flexible LED strips on the bottom of my copter.  Presently, my only option is on or off.  I would like to make them flash or do something different.  On each LED strip there are 9 lights and also resistors.  These are the type of led strips that can be cut if necessary.  I know I could go and buy a micro controller but I'd like to try and make something if it's simple and not to expensive.  The power will come from onboard lipo battery.  Any thoughts or suggestions are greatly appreciated. Thanks in advance, Darrel

Question by dsaper   |  last reply


I have a quad comparator, what should i use it for?

Its the LM339, i know a quad comparator compares 4 different voltages, but thats about it. what kind of application could this have? ideas?

Question by zack247   |  last reply


Arduino control of 4 wheelchair motors?

I want to build an offroad/all terrain mobility vehicle and have simultaneous motor control using an Arduino, raspberry Pi, or similar mini board. I have very limited mobility and want to enjoy the outdoors more. Can this be done? I have 24volt motors, but not sure yet as to the watts.M

Question by poppaIT   |  last reply



Pro tips for getting rid of last bit of jello? Fine tuning 2 axis basecam gimbal?

I have a quadcopter build up with a simple $60 basecam gimbal, a mobius camera, and I have finally got some better motors, the $60 set of EMAX 2213 brushless motors with standard nylon props. (I am still a noob at flying, esp. FPV. on-screen.) (previously, I have been using those notoriously bad genaric china orange/silver 2212 motors 2 of which even had loose, rattly bearings! I did not even bother attempting to ballence since the aluminum prop holders were bent, and some even had partially stripped threads! They were really needing to be replaced!) The gimbal is CNC aluminum mounted, and has 4 rubber suspensions that are supposed to isolate vibration, but they do not remove jello completly. (getting the new miles better EMAX motors and going the best to ballence the props and hubs definitely helped, but did not remove jello entirely.) https://www.youtube.com/watch?v=hajzljufl2I On every crash, the rubber suspension ball things would pop out, and they did quickly wear out, and one of them ripped right apart, so I bought more. They are the same stiffness, I could not source a large quantity of more flexible ones unfortunately. Not for a decent price, anyway. So other than balancing the props with a simple prop balancer, and changing out the rubber balls, what can I do to get the jello down more?

Question by -max-   |  last reply



could someone post an instructable on how to make a quad MOT stack?

I looked all over the internet and instructables on how to make a quad Microwave oven transformer stack but all i could find is a schematic  and that is not enough.  there are plenty of instructables on how to make a dual stack but none on a quad also could you show me how to add resonant capacitors

Question by crazy-blender   |  last reply


How to add a op amp to this circuit?

I built this circuit a while ago but the only problem i have with it is that i have to use electronics like my iPod, laptop, or anything with a high volume output. So I started reading about op amps and hwo they "jack up the signal" and I stated wondering could I somehow integrate it into my circuit so that my audio input is higher therefore allowing me to use my cellphone, tablet, and e.t.c? Currently I have a LM324 Quad amp i know fr sure i wont need all those pin. I also have a tip31 and 2N3904 transistors.

Question by tramont   |  last reply


UHF CB radio antennas or scanner antennas anyone?

For a while now I am back to experimenting with various antenna designs for my UHF radio.Started as something entirely different but who cares LOLAnyways, we usually have either a standard whip antenna or a vertical dipole design for mobile use, like on your car.This is a very good design for both types of antennas, mostly due to the short wavelenght compared to the "old" 2m or 27mHz CB radios.Fun fact for at least AU in this regard is that back in the day everyone jumped onto UHF to get away from the overfilled chatter on 27MHz, now the old 2m band is basically dead except for marine use.One thing I really miss on UHF though is distance!Line of sight communication sounds fine at first but then you really have to realise the limits once out and about.As a result we often have to choose between a high gain antenna or a stubby for going into the mountains or being in a convoy.Only way out seems to be the golden middle by opting for one of the 4.5 - 6-5DBI antennas.Neither solution really satisfies me though :(To get around the limitations and have some fun again when sitting high on a mountain I compared various commercial antennas I had.You know, pick someone with a weak signal coming in and hope he hears you and has some time for a chat.Turned out there is not really that much difference in terms of receiving a signal.Quite huge differences though when it comes to the other side being able to hear you!So I jumped onto a basic SWR meter and actually checked my so called factory tuned antennas - all but one were way off the charts here.At least if you are like me and like optimised instead of compromised antenna systems.A Standing Wave Reflection ratio of 1:2 or even 1:2.5 is seen as very acceptable thing on UHF for some weird reason.Back in my glory days no one I knew would have accepted anything above 1:1.3 for his 27MHz system, be it mobil or a station at home.Sure enough, repeating my long distance tests a few days later with tuned antennas resulted in far better results.An antenna for long distance calls or emergencies?!The easiest way to get more distance on UHF is obviously getting the antenna as high as possible.From a nice mountain top you have it way easier than in any urban areas for example.Explains why so many of the long and sturdy antennas are just simple dipoles on a long pole.If you ever checked the feedback for these double quad TV antennas you realise they are literally in the same frequency range.Similar story for all the Yagi antennas for our TV sets that you find on so many roofs these days.Only problem with them is that they usually don't give a damn about transmitting qualities.And of course that they are usually providing around 300Ohm instead of the 50Ohm our radio expects.A TV needs 75Ohm and a balun is used to provide a isolation as well as a matching for the TV.Needless to say I could not accept this ;)My first design was made from aluminium foil glued onto some printed and stiched pages for a double quad.1MHz bandwidth is quite narrow, so the basic square design with about 13.8cm for the sides of the squares was easy.To my surprise by just adding standard RG58 cable this design was very close to 50Ohm already, I had around 60.A few glue sessions later I was able to match it to 52Ohm - close enough for test.Did not want to risk anything with my expensive Icom so I used my cheap Baofeng handheld for the initial tests.Indoor mind you...To me disappointment I seemed to be unable to pick up anything.So let the sanner run and waited...After being bored enough I decided to pick, starting with the antenna and when I moved it the handheld suddenly had a clear signal.Desperate as I was I grabbed the radio and waited for the chat to continue - nothing again...Then it finally hit me: The double quad is quite directional....Sure enough by just turning it slowly I was able to pick up chatter on various channels.Once brave enough to risk it I even got confirmation that people about 10km away could hear me just fine.Time to scale it up a notch...Next design already had the directional problem included as a design feature.I added a director in the front and a reflector in the back.The endless hours of glueing and cutting were replaced by using 12mm wide copper tape and sturdier cardboard.A test with my car on a little "mountain" and the antenna on 2m pole mounted to roof rack gave me, for the first time ever, conversations with people that were over 30km away.I am currently trying to make the entire thing omnidirectional.The omni quad....If you take two double quad antennas and mount them at a 90° angle you end up with very nice 2-lobe pattern, 4 lobes if you don't use a reflector.Problem here though is that these designs really mess with your antenna matching.Not to mention that using it while driving only works at quite low speeds.One day I will do the final design in stainless steel wire though...Anyways, using the directional properties to get an omnidirection radiation pattern meant using 4 seperate antennas with a reflector for each of them.Still left a few dark spots at short range but otherwise really nice for long distance if you don't want to constantly turn your antenna.Getting 4 antennas down to 50Ohm on the connection to the cable was painful to say the least.The problem of taking care of distances to be in the sweet spot for the 477MHz range also meant the design ended up to be quite bulky.One of my lightbulb moments providing good ideas caused me to use one reflector with a double quad either side.Worked almost fine but again provided totally different values to somehow match if it ever should transmit a signal without damaging the transmitter.Obvious conclusion was to buy a new roll of copper tape and to try to get four single antennas into one "housing" without stacking them.Bad idea here was to cross the antennas :(Better idea was to make 4 pyramids out of carboard and aluminium foil.Sadly this resulted in a failure because the 4 sides of the pyramid reflect the signal not flat bt at their corresponding angles.Had to make it really big and use 90° angles, resulting in the signal being reflected like light in these cat-eye reflectors on your bike.After wasting a few days to create the real thing it turned out to not really work properly for the reception already.Even close range signals came in really distorted.I guess the double reflection meant the phase is shifting and cancelling out what the antenna gets.My last desing idea for testing will be with a different approach.Instead of 1/4 Lambda elements I will use small 1/64 Lambda elements.Only about 2cm long means that matching is pain in the behind but if the purpose is just receiving it should be fine.The reflector will be four flat sides like a box with antennas in front of the sides and the cables joined in the center.If you like to fiddle with antennas and don't mind trying a weird looking base antenna on your roof I might be willing to write up a short Instructable based on my designs - let me know in the comments....By the way: it is quite easy to desing this for the common 2.4GHz Wifi bands ;)

Topic by Downunder35m   |  last reply


i want to make a small quadcopter an i control the quadcopter using arduino uno ?

Motor i am using is 16500 rpm motor  i want  to know is this motor apt  for quad copter and if arduino uno is apt for quad copter how should programme

Question by paulsantony6   |  last reply


Can i replace my CPU easily? Answered

If i was going to replace my CPU (from say, a 2.8 Ghz core 2 duo to some sort of quad core) and my motherboard was compatible with both, would i be able to do it? I know how i could physically do it, but would it mess with my bios etc? I'm confused with what to do on the software side of it. Please help.

Question by tudgeanator   |  last reply


Why my quadcopter is oscillating and crashing after taking off?

Hi guys, I am new to this multirotor domain. We are strugling with our first F450 quad. Below are the specs: 1. F450 quadcopter chassis 2. KK2.1 Flight controller. 3. FLYSKY CT6B --- 6 channel radio transmitter 4. 1400 KV Brushless motor 5. 30 amps ESC 6. Lipo battery Firstly the quad was not taking off properly. More over, after activating self level mode also, the quad is not at all stable. If we max up the throttle, then it flips in one side and crashes. Otherwise, it takes off from the ground upto 1-2 feet if we slowly increase the throttle and then oscillates and to avoid crash, we then decrease the throttle. Please see the video HERE for more reference. Please guys, really need your help in this matter. We are not able to understand exactly what is wrong with our quad. We have already calibrated our ESC's and the Accelarometer but no luck. Please help guys.

Question by RohitR66   |  last reply


can the IC in this circuit be replace with the normal Quad 2 input Nand gate

I want  to make a inductance meter circuit but i cant access the I.C in the schematic because the electronics store near me that sells NTE parts, dont have it. I was wondering how much different will the circuit operate if i use a quad 2 input nand gate.  www.armory.com/~rstevew/Public/TestEquip/IndMeterAdapter.htm

Question by josh1001   |  last reply


Raspberry pi 2 processing capability?

Hearing the announcement of the new latest and greatest Raspberry Pi 2, now a backwards compatible computer with a 0.9GHz ARM Cortex-A7 quad core processor and 1GB of LPDDR2 SDRAM, I was wondering of the feasibility of using it as a very cheap and basic solution for a simple computer for my lab. Currently, I am using a compaq presario C700 Pentium Dual-Core laptop, that has been maxed out with 2GB 800MHz kingston RAM, and is running Kubuntu. I should also not the HDD has been replaced with a 120GB one from an old and broken Xbox. I do not like it much anymore, because although the performance of it is acceptable, the screen is a bit low res, at 1280x800, it's pretty dark (or at least until it 'warms up' to full brightness), it had a major scratch on the screen, (no idea how it got there) and after buffing it out with many methods, including with an eraser, the area has became discolored, like a portion of the screen has higher gamut and brightness, and lower black levels. :( Oh well. The main killer for it is that it's form factor. It is too big, heavy, the screen is too small, and it is very cumbersome to use far away in the corner of my workbench. Of course being a laptop, the 'base' of it is fixed to the screen, and to move it closer to me takes away lots of valuable space on my really messy bench. I mostly use it to research part numbers, get schematics off of google, watch YT videos, log data from serial ports (including my UNI-T multimeter with basic data-logging capabilities), and stuff like that. I may have as many as 20 tabs open at a time, which did tax my old compaq C700 when it had 1GB of RAM, but that was likely due to a memory leak issue with chrome, since I have the SAME issue with my main desktop, with 8GB of DDR3 RAM. If the video by MAKE is anything to judge, it looks just as powerful, as this embedded video is large! https://www.youtube.com/watch?v=pZz8MW3DSqA My hope is to replace it with a raspberry pi, and be able to use it for these basic operations w/ a old cheap LCD monitor which can be picked up off of craigslist for cheap. Generally old 4:3 monitors go for next to nothing. Maybe I can even find one in the dump :P. Maybe I can configure the GPIO pins to be COM ports, w/ clock and everything else! That way an external FTDI chip and using the limited number of USBs is not an issue. Is that possible?

Question by -max-   |  last reply


HOW TO PRODUCE MORE THRUST IN A REMOTE CONTROLLED QUADCOPTER ? 1]LONG PROPELLERS LESS RPM or 2]SMALL PROPELLERS MORE RPM

I ALSO NEED ANY RELATIONAL FORMULA  BETWEEN  LENGTH OF THE PROPELLERS , WIDTH  OF THE PROPELLERS , RPM (rotation per minute) AND THE THRUST PRODUCED . ANY OTHER DETAIL ABOUT QUAD COPTER ( or any other flying vehicles ) CAN ALSO BE STATED.     THANK YOU!!!!!!!! 

Question by RAGHUL NM   |  last reply


Why is my PC slow (3GHz Quad Core SiS 66FX)? Answered

Hey, I'm just fixing up my PC that we got from our old computer guy and I found that it's speed is terrible. There is not many programs on it, I've cleared it from ad ware and have Microsoft Security Essentials on it with Avast Anti Virus. It was hand built I believe by him (That could be a reason) and I mostly assume it is the graphics card. It runs Windows XP 2002 and has no software adjustments on it. Though I would prefer Windows 7 Im fine with XP. Anyhow, here are it's specs: Microsoft Windows XP Home Edition Version 2002 Service Pack 3 Intel (R) Pentium(R) CPU 3.00GHz 3.15GHz, 992 MB of RAM (About 1488MB of Initial Virtual RAM but 2976MB of Maximum Virtual RAM) A SiS 661FX Display adapter Plug and play monitor (Square not widescreen) When  I open up Processors in Device Manager, it shows to items called Intel(R) Pentium(R) 4 CPU 3.00GHz Those I think are the mainly important details you should know about. Please reply if you have a suggestion (Also, on games like Roblox I get about 5FPS lol, my main pc gets about 60FPS)

Question by knexpert1700   |  last reply



I play minecraft and im thinking on buying a new computer is 16gb of ram good enough(keep in mind i use skype too)? Answered

I am wondering if a 16gb ram DDR3 Quad core computer if good enough for playing minecraft, skyping, and possible recording at the same time. This is what I am looking at: http://www.ebay.com/itm/AMD-FX-4300-16GB-DDR3-2TB-QUAD-CORE-CUSTOM-DESKTOP-SYSTEM-PC-/400678180859?pt=Desktop_PCs&hash;=item5d4a47d7fb   OH AND WHEN IT SAYS 16gb do they mean ram ( thats what im thinking)

Question by kevincity228   |  last reply


Computer Help

I am thinking about upgrading my amd processor from a dual-core 2.0GHz to a quad core processor and i was wondering if the AM2 socket that i already have will work with a AM2+ that the processor has.P.S. also, if there are any better deals that you know please comment

Topic by Caveman477 


ROBOQUAD MODS ANYBODY???

I JUST GOT A ROBO QUAD AND I GOT BORED SOOOO IF YOU HAVE IDEAS I COULD USE 'EM LIKE MAYYYBEE 1.SECONDARY CONTROLER 2.MP3 DOCK 3.LCD SCREEN soooooo pleez HEEELLLPPPPP!!! SEND ME COMMENTS

Topic by CCH3ST3R   |  last reply


Help with DIY quadcopter Answered

For school im building a quad copter. I was thinking instead of wiring all four motors and all that stuff that I could purchase four of the same helicopters, glue them on, and set them to the same frequency so I control all four helicopters with one remote

Question by Orange Shadow   |  last reply


Processors

I am thinking about upgrading my amd processor from a dual-core 2.0GHz to a quad-core 2.3 GHz processor and i was wondering if the AM2 socket that i already have will work with a AM2+ that the processor has.P.S. also, if there are any better deals that you know please comment

Topic by Caveman477 


How do I correct the problem of my sk450 deadcat quad flipping forward?

Tried all the recommended settings to compensate for pitch and roll as I understand it. Take it of with aileron and elevator in neutral position and the copter topples forward before it leaves the ground. What Should I be changing to settle things down.

Question by Robertpatrick2727   |  last reply


what is meant by ESCs calibration?

I know how to calibrate ESCs on the quad-copter. Howver, I dnt understand the concept of calibration. What is meant by ESC callibrarion? what happens when we calibrate the ESCs? is it so they move synchronously or so the PWM signal reaches each ESC at the same time?

Question by Bam Boy   |  last reply


Amd Gaming? Answered

I was planning to purchase parts for a budget gaming system, around $600. Everyone says that Amd processors are a lot cheaper than Intel (which is true), but they say that the performance isn't nearly as good. What do they mean by this? Are they decent gaming processors? Thanks.

Question by noobererer   |  last reply


How can I overclock my PC?

I am running an intel i5 quad core at 2.66 GHz and would like to overclock it. Cooling is not an issue as I have a coolermaster 600 case which is overkill. How do I go about overclocking my CPU, Video card and RAM?

Question by Tombini   |  last reply


How can I reduce 3A down to 1A? Answered

I am finishing up my quadcopter build, but forgot to buy an UBEC. My ESCs are OPTO, a fact I unfortunately did not realize until I had bought them. So, I am attempting to design my own circuit to reduce the 11V 3A battery I have down to 5V 1A for my receiver and flight controller board. So my question is this: can I use a simple 5V regulator to reduce the voltage and amperage? Or will 3 amps going into the circuit fry the regulator? I read that putting 2 regulators in parallel will increase current; however, I believe that is only for the output of current from the regulator(s). Any and all help is appreciated!! Thanks in advance!

Question by Adum24 


Which computer is better? Answered

Hey, I'm trying to figure out which computer I should buy. One is an HP Pavilion HPE H8 with an Intel i7 third generation quad core at 3.4Ghz. The other has an AMD FX100 Hex core processor at 3.5Ghz. It sounds like the AMD is the winner, but I just want to be sure. I plan on running games such as Battlefield 3, Crysis 2, Saints Row 3, Medal of Honor, Need for Speed World, and about 7 or 8 other smaller games. The computer with the AMD processor has 8GB RAM and the i7 processor has 10GB, both have 1TB sata 7200rpm HDD. Which is faster? Which will run best?

Question by knexpert1700   |  last reply


Battery stumper?

Somebody wanna tell me why when I got my brand new quad syma copter and I put 4 brand new rayovac rechargable batteries that measured 1.24 volts the hand controller would not turn on, and when I put in 4 old duracells that measured 1.14 that were just laying around and weren't brand new like the rayo's were and they worked, I'm stumped. Too much power?

Question by angpal59   |  last reply


Micro quadcopter circuit board as flight controller and receiver?

I have a little airhogs quadcopter. A motor had died in it, so it doesn't fly anymore. I kinda got the idea to connect ESCs to the motor output of the quad's circuit board. Would those motor outputs be able to drive the PWM input of the ESC, allowing the board to basically drive larger motors?

Topic by Dashing Rainbow Dash 


Is my GPU being bottle necked by my CPU? Answered

Hey Guys, just a quick question here. I have a Core 2 Quad Q6600 and an AMD R7 250 MCI OC 2GB Edition. I was wondering if anyone could tell me that if my GPU is being bottle .ecked by my CPU. Thanks in advance -Prickly Potato

Question by SA-DIY   |  last reply


what is the best graphic card for my PC?

My PC specs are : motherboard : BIOSTAR PURO HI-FI A85W processor      : AMD A8 APU 5600K Quad core 3.60 Ghz RAM                 : 8 GB OS                   : windows 7 ultimate 64-bit VGA                 : ATI RADEON HD 5570 HDD                : 1 TB If i wan't to change my graphic card for best gaming result what is the best VGA card should i buy? 

Question by eydie kevin   |  last reply


Can I run Crisis on Ultra-High with this computer?

The question is in the title, the computer I will be running has the following specifications; Memory; 4GB Kingston DDR3 C9 1333M Video Card; Saphhire HD 5750 700M 1GB CPU; Intel core i5 750 3.66Ghz SKT 1156 (quad core) All the other specs are sufficient, thanks in advance to anybody who can help me

Question by Tombini   |  last reply


How to Overclock a computer? Answered

I have recently heard that there is a way to change the clockspeed of my computer, and speed it up. But I have found next to nothing on how to overclock a computer. All I hear is change the fsb and decrease power etc. But I don't know what fsb is or how to change any of those things. (I believe it has something to do with the bios) Processor: Intel core 2 Quad Q8400 Thanks in advance

Question by vorlock   |  last reply


Why is my quadcopter toppling when i try to fly it?

I built a quad copter. I have done all the calibrations correctly (accel, compass, rc, esc). When I arm the drone, motors and propellers are spinning. But when i give more throttle to try to hover it, it doesnt fly upward steadily. Instead it lifts backwards and falls. Why is this happening? Should I change some PID setting?

Question by prash319   |  last reply


Bulding up a new PC, which one would you think be the best? Answered

Intel ·ASUS P7P55D - Intel P55 Chipset  - LGA 1156  - DDR3 (2133MHZ OC), 2x PCI Express 2.0 x16 (CrossFire Support) - Special Features - TurboV EVO OC Processor (2nd Micro Processor onboard) 12+2 Xtreme Phase Power, T Probe (Active cooling Microchip), Asus EPU · Intel Core i5 750 Lynnfield Processor - 2.66GHz Quad Core, 45nm, LGA 1156, 8MB L3, 2.5GT/s DMI Interface ·Patriot 2048MB DDR3 1333MHZ MEM x2 ·9800GT 1GB FORSA GRAPHICS CARD or AMD ·Jetway 770 Socket AM2+/AM3,AMD™ 770 Chipset and AMD™ S700 Chipset ,Supports AMD Socket AM3/AM2+/AM2:AMD Phenom series processors, Athlon 64 X2 / Athlon 64 FX / Athlon 64 / Sempron processors,HT 3.0,Dual Channel DDR2/DDR3 memory technology ·AMD Phenom™ x4  Quad Core (9650) 2.3GHz Processor ·Patriot 2048MB DDR3 1333MHZ MEM x2 ·9800GT 1GB FORSA GRAPHICS CARD

Question by Ortaega   |  last reply


Ultra cheap RC quadcopter (preferably using brushed motors)

Hey everyone.... :) I'm organising a camp to encourage high school students to take up STEM courses..... and I'd like to have them build their own RC quadcopters. I want the course to have a minimal fee.... so the quad should be INSANELY CHEAP. The quad should be able to do just one thing:FLY. Also, durability is not an issue.... just one or two flights should be sufficient. 1)Can someone please suggest a design using brushed instead of brushless motors? (Simply because they're cheaper) 2)If there's any way I can build a flight controller using off-the-shelf components.... please share your ideas.. 3)I have no idea about how to make the remote control/ RF transmitter....... is it the same as that of an RC toy car remote control? 4)I've come across some lovely designs where the frame is made out of paper or cardboard.... so that's not an issue.  Help in any form is welcome.... I'd love to hear from y'all....  Thanks in advance...:)

Topic by afshaanmaz   |  last reply


Quadcopter Build Check? Answered

I have recently researched and picked out parts for an entire quadcopter build. Would someone be able to tell me if all of these parts will be OK for a quadcopter build in terms of a.) if the parts will work together (I believe they will, but I am not 100% sure) and b.) if I will be able to do FPV with a Mobius Action Cam. Any and all help is appreciated, thank you in advance! (If I am missing anything important on the list please let me know also). Frame: I will be building one out of lightweight wood. Transmitter/Reciever: http://www.hobbyking.com/hobbyking/store/__9042__Hobby_King_2_4Ghz_6Ch_Tx_Rx_V2_Mode_2_.html Propellers: http://www.hobbyking.com/hobbyking/store/__39772__9x4_7_SF_Carbon_Fiber_Propellers_CW_and_CCW_Rotation_1_pair_.html Control Board: http://www.hobbyking.com/hobbyking/store/__17537__HobbyKing_Quadcopter_Control_Board.html Motors:  http://www.hobbyking.com/hobbyking/store/__39036__Turnigy_Multistar_2213_980Kv_14Pole_Multi_Rotor_Outrunner.html ESCs: http://www.hobbyking.com/hobbyking/store/uh_viewitem.asp?idproduct=27775 Battery: http://www.hobbyking.com/hobbyking/store/__16633__Turnigy_3000mAh_3S_30C_Lipo_Pack_US_Warehouse_.html Battery Charger:  http://www.hobbyking.com/hobbyking/store/__7028__Turnigy_Accucel_6_50W_6A_Balancer_Charger_w_accessories.html Power Distribution Board: http://www.hobbyking.com/hobbyking/store/__31223__Hobbyking_Multi_Rotor_Power_Distribution_Board_DIY_8_x_output_PCB_.html FPV Equipment: http://www.ebay.com/itm/5-8G-200mW-Video-Audio-AV-RC-5808-Wireless-Receiver-TS58200-Transmitter-for-FPV-/251413117397?pt=Radio_Control_Parts_Accessories&hash;=item3a8963b9d5

Question by Adum24   |  last reply


Can i swap out my processor?

My family just got a new computer. However, the processor on the new one sucks compared to the old one. Old processor: AMD Phenom x4 9100e quad core processor New Processor: AMD Athlon II 170u processor is my old processor compatible with my new computer? How do i swap them out?  what risks are involved? will any data be messed up? please help...

Question by quellek2   |  last reply


Can I create a quadrocopter RC transmitter using an Arduino?

I recently started playing with a quadrocopter. I love it, but I am not a fan of the traditional RC transmitters. I believe that they were designed for older RC airplanes and I think the design could be improved upon. I have also recently started experimenting with Arduino. I bought a USB shield and downloaded a fancy library and I can now control my more simple robotics projects using my wireless Xbox controller.  What I really want to do is send radio signals from my Arduino to my quad without altering the quad in any way. Perhaps the easiest solution would be to cannibalize my current transmitter, but I wonder if there is another way. I'm new at electronics but I'd really like get things going. Maybe a few more detailed questions would be helpful. 1. Can a custom built RC transmitter be paired with any RC receiver? 2. What sort of Arduino parts would I want to look for to accomplish RC transmission? I've seen a couple of 2-6 channel transmitters, but would like more resources to understand how they interact with receivers. Any other information/links would be greatly appreciated.  

Question by TylerT35   |  last reply


Can anyone help me with the control algorithm for MPU 9150 (9-axis motion controller)?

Me and my team are working to make a Quad-copter using an Arduino. But to stabilize it, we planned to use MPU9150. We tried and we are still trying to make it work with the controller. So far, we can get the raw data from the motion controller, but we are unable to configure it as per our needs. So can anyone help with the control algorithm?? Thanks in advance.

Question by rahulstanley   |  last reply


How do I get past the Miracast password screen?

I have a Bros Unite MXV Amlogic S805 Quad Core Android Tv Box Full Loaded Add-ons with Kodi BT Smart Player Streaming Media Player. When I went to use it the other day a Miracast screen came up and ask for a password. I have not set up a password for this and am not able to use my TV box because of it. What do I do to get pass the login screen and use my TV box?

Question by Janice0007   |  last reply


im making a circuit useing 30 or less LED lights and I only have 4 9V batteries. I was wondering if 36V will be enough? Answered

Im making a portable circuit useing 30 or less LED lights and I only have 4 9V batteries. I was wondering if 36V will be enough and if not how could I amplify the power. I thought about a quad-opp-amp IC but Im not sure how to use it. Im using blue,red,yellow.green,UV,white,and maybe pink

Question by fastcar123   |  last reply


3-channel RGB LED Color Organ

Pretty much I want to make a 3-channel color organ and hook it up to a single RGB LED. I'm really not used to analog electronics, but I'm pretty sure this could be achieved with a single quad op amp IC. Seeing as I would much rather trust your guys' expertise over my lack of said knowledge, I thought I'd ask the experts. I did get a schematic in Multisim, but I'm really not sure about the functionality.

Topic by agent   |  last reply


QUICK: Ideas for getting drone out of tree! [EDIT: already got it down, but ideas are welcome!]

Ok, so I have built up my $400 FPV quadcopter, and just last night, I was able to get it in the air working flawlessly! I then proceeded to have fun with FPV on a small TV monitor. I quickly got the hang of it, and decided to venture up and around the back yard. However, there was one problem I have been neglecting, which of course, it bit my ass as you can tell from the title. From countless hours of debugging and stress-testing previous weeks to find the intermittent issue with the ESCs, I finally pinned down the issue and was able to reprogram the ESCs, as well as calibrate them properly. (turned out when I first built the quad many moones ago, I unknowingly entered programming mode in the past and changed stuff I had no intention to change!) So eventually, I punctured one of the cells on the battery, and did not realize until a few days ago. I found after close inspection that it was most likely due to a crash which dislodged the battery from the strap, and it scraped up against the video transmitter shielding and heatsink. I removed and discarded the damaged cell, so I was left with a 2S battery. It is BARELY enough to lift the quad. And very slowly at that. However, I could not wait for the new battery to come! I just HAD to fly it to see if I got it to work! :D So today, I have been practicing full-on FPV, and unknowingly flew above a tree. I thought I was next to our chicken house,  and was looking directly at it, hoping to land directly in front of it. However, I did not know I was as close as I was to the tree directly below me. By the time I saw it it in the mobius camera, a slammed the throttle as high as possible, but by that time it was too late. That stupid 2S battery that I have not bothered to replace just did not have the umph to pop the quad up into the air higher, and as it discharged to below 6.98V based on the video feedback data, and the quad just kept descending even at full throttle due to the voltage being too low to effectively power the motors. So there it went tumbling and got snagged on to a thin limb. I lost remote control, so I could not get it unstuck like I did before from a previous flight. But I still surprisingly had FPV working, with the minimOSD sending down GPS data and battery voltage level. So I get to watch the battery voltage trickle down 1 mv at at time. (Welp, time to pop the kettlecorn and watch the 2S battery progressively deep-discharge and get more damaged by the minute!) It did, however, rise back up to 7.4V unloaded (telling me that the internal resistance must be pretty high, so I would not to too bothered too much to throw away the 2S battery entirely!)  Nor did I bother to watch it to see how low and how long it will take to discharge below the safe limit. I packed up all monitor and ground gear to get it out of the cold. So here it stands; stuck real high. I have tried climbing up 14-18 feet onto the tree, but it was still a good 12 feet up. I tried a rope to the trunk and shook the hell out of the tree. The limb that the quad was stuck on did not move much, and the tree was dampening the vibrations too much, even after hitting a resonance peak (technically a harmonic of the resonant frequency), where I could clearly see 2 "standing waves" in the trunk, but that got tiring real quick,and the winter sun has set and things were getting darker by the minute. I did not budge the quad.  I eventually resorted to shooting the limb with a 22 rifle, and on the 3rd shot, I got it to fall down!!! .......... 3 feet, that is, until it got stuck on an even LARGER branch, and now it is really stuck on it. It is on its side on a small fork in the tree, and it is snagged on that now. I can't shoot the base of the branch to break it, because it is like 4 inches in diameter, and on the forked branch right where it is caught, the quadcopter is sitting directly on! If I shoot it, there is a good chance of hitting the quadcopter and destroying the lipo battery causing it to catch fire, or hit electronics or the camera with the beautiful 1080p HD footage of the crash! Again, shaking the tree violently does not do much to budge it. Perhaps someone in the community has an idea on how to knock it down? 

Question by -max-   |  last reply


Can we request an instructable? Helmet Intercom?

So i was wondering if anyone could create an instructable to make a helmet intercom system. I recently bought quads and its hard to hear eachother screaming at the top of our lungs. I know there are kits you can buy that fit two-way radios with Push-to-talk options, but I was hoping I could just make it considering the kits are EXTREMELY overpriced. I was thinking of buying a 4 pair of cobra walkie talkies and would need an easy to craft earphone, microphone and push to talk button that would plug into the walkie. Thanks!

Topic by fabes253   |  last reply