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Thread: My Multi-rotor Project

  1. #1
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    My Multi-rotor Project

    Hi everybody,

    My name is Romain, I’m French, I’m living in Lyon and I’ve 24 years old. To summarize I’ve bought my first quad recently (Hubsan x4) which I appreciate a lot and which allow me to discover a real interest for flying, FPV, etc. But now I want to go to the next step!

    Step :

    1. To fly and make it stable
    2. GoPro installation
    3. FPV system

    Elements (what I’ve found with hours of research on the web) :

    • 1 x frame : Q450 Glass Fiber Quadcopter Frame 450mm - Integrated PCB Version
    • 4 x rotors : Sunnysky X2212-980KV Brushless Motor
    • 4 x propers : Slow Fly Electric Prop 9047SF (horaire et anti-horaire)
    • 4 x ESC’s : Turnigy Multistar 30 Amp Multi-rotor Brushless ESC 2-4S
    • 1 x controler : DJI NAZA F45
    • 1 x radio (transmission et reception) : FrSky DF 2.4Ghz Combo Pack for JR w/ Module & RX
    • 1 x battery (Lipo) : ZIPPY Compact 4000mAh 4S 25C Lipo Pack
    • 1 x charger: IMAX B6 Charger/Discharger 1-6 Cells (GENUINE) + Power Supply Adapter
    • 1 x “remote control” : DX6I DSMX SEULE MODE2

    Cost (average) : 550€ / $660 (without shipping)


    Other charges:

    • Additional batteries
    • Replacement pieces and part (frame’s arm, proper and screw)
    • Soldering iron + tin
    • Connectors and cable ?
    • Velcro
    • Device for balancing proper
    • Alarm for battery

    Need to thing about :

    • Balance the proper
    • Be careful to mode 1 and mode 2
    • Be careful regarding to the law (mostly for FPV I guess)

    How it works (what I’ve understood) :

    There are 4 propers (clockwise or counterclockwise). They are fixed to the motors. Those one are control via the ESC’s (don’t know why exactly), themselves are link to the controller. This one is programmed to manage the stability of the quad (among other) thanks to the gyroscope sensor. The information came from the receptor and the transmitter: the “remote control”. The all is supply by the battery.

    Is that a good summarise? Do I miss something? I’m wrong?

    Questions:

    • What means ESC exactly ?
    • What is the difference between 3S and 4S, 4S = more powerful? 3000 mah is enough? What is the difference between 3000 and 4000 mah, the during of the flight ?
    • Is the transmitter pack good? How it works? I’m not supposed to get the signal from the “remote control”?
    • For the charger there is not “package”? Do I’ve found a good solution?
    • What will be the total range with this config? I’m looking for something between 800 m and 1.5 km maybe.
    • Do you know efficient system of alarm for the battery?

    Thanks a lot for your advices and sorry for my English

    EDIT : I think to take http://www.miniplanes.fr/radiocomman...h-p-29541.html instead of the radio and transmitter
    Last edited by romstj; 31st December 2012 at 09:04 PM.

  2. #2
    Tinkerer Mochaboy's Avatar
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    • What means ESC exactly ?
    Electronic Speed Controller - it's what controls the speed at which your brushless motors spin.
    • What is the difference between 3S and 4S, 4S = more powerful? 3000 mah is enough? What is the difference between 3000 and 4000 mah, the during of the flight ? Alot but the simplest way to visualize it is...3S = more capacity, less weight, less voltage. 4S more voltage, more weight, less capacity but in some cases - higher efficiency. If you're starting - go with 3S. That will allow you to plug a range of components directly into the battery without having to use a step down converter.
    • Is the transmitter pack good? How it works? I’m not supposed to get the signal from the “remote control”?
    That's a fine radio but you'll eventually grow out of it.
    • For the charger there is not “package”? Do I’ve found a good solution?
    That's a fine charger. You will need a 12v power supply that can supply at least 3 amps. Typically these are the brick style power adapters you use to connect your laptop.
    • What will be the total range with this config? I’m looking for something between 800 m and 1.5 km maybe.
    That depends on a lot of things like where you're flying and what's around you, but yes that setup and most in this class will have that range out of the box.
    • Do you know efficient system of alarm for the battery?
    Any of these will work

  3. #3
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    Thanks a lot Mochaboy !

    You think 3S is enough to fly the quad with a gropro and all the FPV system ? How much mah I can get ?

  4. #4
    Tinkerer Mochaboy's Avatar
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    Yes - we fly 3s 3300's 2200's even 5000's just keep the battery weight around 350g or under. Over a certain weight, efficiency starts to take a big hit so keep it light.

  5. #5
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    Ok do you have any advice for the config Lipo/ESC's/Motors/Propellers ? Here what I've found :

    Lipo :

    • ZIPPY Compact 2700mAh 3S 25C Lipo Pack (215 g)
    • ZIPPY Compact 2450mAh 3S 35C Lipo Pack (220 g)
    • ZIPPY Compact 2700mAh 3S 35C Lipo Pack (241g)
    • ZIPPY Compact 3700mAh 3S 25C Lipo Pack (264 g)
    • ZIPPY Compact 3300mAh 3S 35C Lipo Pack (308 g)
    • ZIPPY Compact 4000mAh 3S 25C Lipo Pack (309 g)

    ESC's : (I'm looking for easy to use and efficient ESC's)

    • H-KING 20A Fixed Wing Brushless Speed Controller
    • Turnigy AE-20A Brushless ESC
    • HobbyKing 20A BlueSeries Brushless Speed Controller
    • Mystery 20A Brushless Speed Controller (Blue Series)

    Moteurs :

    • SUNNYSKY X2212-980KV Brushless Motor

    Hélices :

    • Slow Fly Electric Prop 9047SF (4 pc) (9")
    • Slow Fly Electric Prop 1045SF (4 pc) (10")
    Last edited by romstj; 1st January 2013 at 07:53 PM.

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