Eachine Wizard Killer x220 F4

By Whiffles on Mar 07, 2017

9 4,424  46 

Whether or not you're new to FPV quads, you've probably heard of the Eachine Wizard. While it's a great starter rig it has some shortcomings. This guide provides instructions on how to build a higher quality, comparable quad at nearly the same price. Some improvements include:

  • F4 flight controller for faster loop times
  • Dshot compatible 4-in-1 ESC
  • CCD camera for a wider dynamic range
  • OSD for real time voltage readings
  • Blackbox for tuning
  • A more solid frame and better quality motors

This is a fairly easy starter build as it doesn't require quite as many solder joints as a typical build. The 4-in-1 ESC saves about 16 joints. Also, this is a very roomy frame, so you've got lots of space for your RX as well as an HD camera. So let's get started!

Knolling

Frame Assembly

I had a few liberties with the kit, so I'll do my best to explain the build process. Most folks will screw the the frame together from the top. Instead, I excluded the red PDB and inserted the screws through the bottom. This offers a much more flush bottom face. To mount the stack I inserted the same screws through the bottom and screwed the standoffs into them as pictured:

Frame

Wiring the Motors and ESCs

After securing all of the screws I mounted the motors and fitted the 4-in-1. This particular ESC requires a little finesse around one of the standoffs. If the standoff isn't at the proper orientation it'll bump part of the circuitry under the board. Just be sure it sits flush on top of all of the standoffs. You might want to consider some blue loctite to mount the motors as there's a small chance the motor screws can wiggle free over time. This is debatable, so it's really a suggestion rather than a requirement. Note: The bottom plate is backwards in the next couple pictures, so make sure the ESC FC plug is facing the front of the quad.

Motors & ESCs

The first thing you want to do is replace the power leads. The wires they used were far too thin for a quad of this size. I used 16AWG which isn't ideal for a 4S build (14AWG would be better), but the pads were super tiny. It should be fine. Another problem is the motor wires are too short, so you need to join them to the pre-installed 4-in-1 wires. Ideally the motor wires should solder directly to the 4-in1 to reduce any potential point of failures.

Soo, I decided to get a little fancy with the wires. The paracord is entirely optional, but I've always wanted to give it a try. At the very least you need a little shrink tubing to cover the joints. I cut 3 pieces of paracord to 2.6 inches each and slid them over the wires. Then I cut a couple larger pieces of shrink tube to go over the paracord and 3 tiny pieces to go over each joint. You should tin the wires before adding any of the tubing to avoid melting it pre-maturely.

Paracord

At this point you can solder the wires, but be careful not to melt the shrink tube before you sleeve the joints. Get in quick and get out quick. Once it's soldered up you can sleeve the joints and melt the tubing. Before you melt the larger tubing over the paracord it's a good idea to take a lighter to the ends to reduce the fraying.

I used a little double-sided tape to keep the wires down and here's how it turned out:

Wires complete

Wiring the Flight Controller

Now for the fun part! Wiring the FC and FPV gear can go really quick if you know where all the wires go. The first thing you need to do is send power to the board. These go to the vbat and ground pads.

VBAT

Now that your board has power you can work on your FPV/OSD. This flight controller has 5v out but I found that it isn't enough amperage to power either the VTX or the camera, so you'll have to use the 5V BEC listed in the part list. To prepare the BEC remove the shrink wrap and de-wire it. Make sure you've got some shrink tube wide enough to cover it up afterward, or you can just use some electrical tape. I passed the vbat straight from the flight control board to the BEC and then connected both the camera and VTX power leads to the BEC output. It has terminals for two sets of wire on the output end. While this BEC isn't as small as a pololu, it'll get the job done. Make be sure you buy the 5v BEC because 12v is too much for this little VTX.

Finally, solder the camera video to the FC OSD in and the VTX video to the FC OSD out. That's it for the FPV wiring.

FPV
FPV

Receiver and ESCs

Now for the finishing touches! Depending on what TX/RX you're using the RX wiring will vary. Since I use a DSMX radio, I used a LemonRX diversity satellite. A nice trick to protect your antennas is to wrap zip-ties around the front arms pointed back toward the motors. Then you can use some shrink tube to affix them to the zip-ties where they'll never be affected by prop strikes or upside down "landings". Finally, don't forget to connect your ESC board to the FC. Just use the short cable included in the package.

Configuration

Now you're ready to configure! As always, make sure your motors are in the proper positions and that they're spinning the proper directions. The first thing you need to do is flash to the latest stable release of BetaFlight. Keep in mind that this board uses the Omnibus F4 distribution. If you use the same components listed below you can re-arrange the motors with these CLI commands:

resource MOTOR 1 A03
resource MOTOR 2 A02
resource MOTOR 3 B01
resource MOTOR 4 B00
save

After that you'll want to reverse the motor direction through BLHeli Configurator. In my case I needed to reverse motors 2 and 3. This ESC supports DSHOT300, so be sure to toggle that. And since this is an F4 board you can run both your PID loop and Gyro at 8khz. Now the rest is up to you! You'll want to bind and map your receiver, set your modes (ARM, AIR MODE, HORIZON, etc.), and configure your OSD. One nice thing about dshot is you won't need to calibrate your ESCs.

Camera Settings

One important step that I usually take care of last is adjust the camera settings. You'll need to hook it up to an analog screen using the included wire harness. The power lead is perfect for a Fatshark battery, but if you don't have one you can just use a laptop power supply. Just make sure the voltage and polarity are correct. Here are some optimal FPV camera settings. If you set your camera according to that document you'll be all set!

Final weight with Mobius Mini: 356g

Final

Photos

Part List

Frame

Martian II 220 220mm 4mm Arm Thickness Carbon Fiber Frame Kit w/ PDB For FPV Racing (33 builds)
Banggood.com
$26.10

Flight Controller

Omnibus Betaflight F4 Flight Controller V1 STM32 F405 MCU Integrated OSD (14 builds)
Banggood.com
$24.49

ESCs

Racerstar RS20Ax4 20A 4 in 1 Blheli_S Opto ESC 2-4S Support Dshot150 Dshot300 for FPV Racer (24 builds)
Banggood.com
$23.99

Motors

4X Racerstar Racing Edition 2205 BR2205 2300KV 2-4S Brushless Motor Dark Blue For 210 X220 250 280
Banggood.com
$28.45

Propellers

10 Pairs Kingkong 5040 5x4x3 3-Blade Single Color CW CCW Propellers for FPV Racer (34 builds)
Banggood.com
$6.49

FPV Camera

Foxeer XAT600M HS1177 600TVL CCD 2.8MM IR Mini FPV Camera IR Blocked 5-22v with Bracket (66 builds)
Banggood.com
$33.99

FPV Transmitter

Eachine VTX03 Super Mini 5.8G 72CH 0/25mW/50mw/200mW Switchable FPV Transmitter (57 builds)
Banggood.com
$13.99

Batteries

Infinity 4S 14.8V 1500mAh 70C Graphene LiPo Battery XT60 Support 15C Boosting Charger For Racer Drone (13 builds)
Banggood.com
$21.89

Power Distribution

DC-DC Converter Step Down Module UBEC 3A 5V / 12V BEC For RC Airplane FPV
Banggood.com
$3.59

Misc Parts

Mobius Mini Lens B 135 Degree Wide Angle Super Light FPV 1080P HD Camera DashCam 60FPS H.264 AVC
Banggood.com
$70.99

Misc Parts

MTV Mount 1.8mm 170 Degree Wide Angle Lens For FPV Camera (8 builds)
Banggood.com
$7.06

Misc Parts

5 Pairs Black XT60 Bullet Connector Plugs for RC Battery (2 builds)
Banggood.com
$4.99

Misc Parts

10 PCS M3*30 Colorful M3 Aluminum Column Spacer for RC Racer Drone Multirotor Silver Black Red Orang (2 builds)
Banggood.com
$3.49

Misc Parts

1M 8/10/12/14/16/18/20/22/24/26 AWG Silicone Wire SR Wire (2 builds)
Banggood.com
$2.16

Misc Parts

Mobius Mini. Schutz 20°+ 25° by smart67
Thingiverse.com
See Site

Misc Parts

550 Paracord Black Jet Black Made in USA (2 builds)
Paracordgalaxy.com
See Site
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Discussion

Sign in to comment.
Bumpy Crunch   Apr 22, 2017  

Hi, do you have any recommendations for PIDS on this build? or atleast a guide on how you set the PIDS?
Thanks,

Whiffles   Apr 22, 2017 

I'm still working on the PIDs, but I'm getting close! Here's a great video tutorial on LOS PID tuning,

Whiffles   Mar 27, 2017  

Here's a little footage from the other day. It's not a full pack, but just a short clip,

Show previous comments
Whiffles   Apr 04, 2017 

This was with the KingKongs. The 5051s were mainly for show. They'd pull too many amps for this setup.

KWADS_FTW   Apr 04, 2017 

Thought so, thanks

KWADS_FTW   Mar 17, 2017  

what are those racerstars like?

Show previous comments
KWADS_FTW   Mar 25, 2017 

Thanks for the reply, do you think that it's worth paying an extra few dollars to get the br2205s(a slightly upgraded version) over the br2205 you have on this quad

Whiffles   Mar 25, 2017 

Worth a shot! You may not be able to discern a difference, but they're only a couple dollars more. If you want to make a difference then you'll probably have to go with the Emax RS2205 2300kv motors.

SIGHKOTIK   Mar 20, 2017  

I like the direction you went with the paracord, looks great! So satisfyingly symmetrical.

Whiffles   Mar 20, 2017 

Thank you! I've seen it done before so I just had to give it a try myself. It does look quite nice, but it requires a lot of patience to get right.

SadisticLeprechaun   Mar 20, 2017  
1

SOLID inexpensive build. Never thought I would say that. Under 200 without the Mobius HD cam, almost disposable!! Only change I would make is to go 30A on escs (always for future-proofing and ease of mind while slamming throttle). I checked it and it is 20 dollars more.

Whiffles   Mar 20, 2017 

Yeah, I'm impressed. I've been flying it these past few days and it's a lot of fun. What I love about it over my GEP-TX5 is the top mounted battery. I can land anywhere to adjust my PIDs via OSD and pick up right where I left off.

Since this was a budget build 30a ESCs were off the table. I was just trying to get the price as low as possible. The 20a performs just fine for what it is.

MichaelGuest   Mar 18, 2017  
1

Clean build! I would like to build this just without the FPV stuff for LOS. I was wondering do I need the BEC you used or can the 4 in 1 ESC power the FC because someone said the racerstar ESC doesn't have enough power or something to power FC and should I use a PDB? I am buying the Revo F4 because the one you used is out of stock currently. Thanks!

Show previous comments
Whiffles   Mar 19, 2017 

I've got bags and bags of spare wire from building these things, so that black and white is just some grab-bag wire. If you do this long enough you'll have more wire than you know what to do with! If you know anybody personally who builds these they've probably got some wire to fit all your needs. You should be able to use the 22AWG to power the FC.

MichaelGuest   Mar 19, 2017 
1

Thanks for you help I really appreciate it!

VazUbik   Mar 13, 2017  

nice build, specially with the wire cord.

Whiffles   Mar 13, 2017 

Thank you! I've seen it used several times and just had to give it a try myself. I think it definitely adds some style and hopefully some protection for the wires.

snootux   Mar 10, 2017  
1

Great budged build and tutorial, thank you!

Show previous comments
snootux   Mar 10, 2017 

To me if i can sell my old 5", don't blame me if i will copy it exactly as it is ;) Anyway are you sure that powering that fc with lipo voltage won't overheat it?

Whiffles   Mar 10, 2017 

This is my 3rd build using an Omnibus board and they've been wonderful. While this is a clone it powers up just fine and I see no issues. They're made to handle up to 4S lipos and have a built-in 5v BEC. My favorite FC hands down.

If you're concerned you can always power it with the 5V BEC used to power the camera, but then you'd lose your voltage reading over OSD.

FissionBomb   Feb 17, 2017  

What antenna would you go with on this? Something RP-SMA to go with the Eachine VTX, right or does the VTX come with a dipole?

Does that frame/PDB or Flight controller come with nylon standoffs?

Whiffles   Feb 17, 2017 

The VTX comes with a dipole antenna, but if you want to use an SMA antenna you can use something like this to replace it.

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