Mini Hex Review – Melo’s Multirotor Minute

Here’s my quick review of the MJX X900 X901 3D Roll 2.4G 6-Axis First Nano Hexacopter from Banggood.com.

Pros:

  • Well built, solid construction
  • Flies stable, but quick and maneuverable if in high rates
  • Flips and rolls are crisp and precise
  • Shipping to 9 days (China – California)
  • Only $20.75

Cons:

  • Remote is kind of small (but standard for this size multi rotors)
  • Need a screwdriver to install batteries in remote
  • LEDs aren’t very bright

You can get your directly from Banggood here by clicking here.

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SubMini 200mm FPV Quad

Introducing the SubMini 200mm FPV quad, a custom designed multirotor. As the name indicates, is has a motor-to-motor diagonal measurement of 200mm, perfectly suited for 4″ props. The frame was designed and 3D printed in black ABS and is 4mm thick.

Components (with links).

Motors: RCX 1306 2300kv
Props: 4045 CW & CCW from MyRcMart.com
ESCs: RTF HUGESC 12AMP SIMONK-(RAPIDESC)
Flight Controller: Flip32 Racing Edition
RC Receiver: FrSky VD5M
FPV Transmitter: TS5823 5.8GHz 32CH Mini FPV Video Transmitter
Camera: RunCam PZ0420M 2.8 mm lens
Battery: ZIPPY Flightmax 1000mAh 3S1P 25C
Antenna: Off-brand CP RP-SMA antenna.

Here’s a quick rundown of the costs, but please note that not everything needed is included: I already had 4 batteries and the FPV antenna. Also, its a good idea to get a spare motor and ESC, just in case. You don’t want your project to be halted because of a faulty motor. But, on the positive side, Shipping from MyRCMart was suprisingly quick: the package took exactly a week to arrive from China to my doorstep in California.

costs

Soldering the HugESC wires was a bit tricky, you need a fast and steady hand. The ESCs where shrink-wrapped to the frame itself for additional protection.

Frame and ESCs

I was initially going to use a regular Flip32 fullsize controller, but the spare one I had wasn’t working quite right, so I ordered the Flip32 Racing controller, which is less than half the size of a standard Flip32 (35mm x 35mm). I decided to use the FrSky VD5M because it was what I had lying around, and it worked quite well. I removed the connectors and soldered the wires directly from the receiver to flight controller. Again, you need a fast and steady hand to pull this off, the solder points are tiny. I epoxied the receiver wiring to ensure durability.

The 1306 motors are tiny! They are really 1706 (17mm in diameter), but they perform quite well when paired with 4 x 4.5 props.

1306 motors and 4045 props

The all-up-weight (AUG) is 246g (165g for the frame alone). It was tuned and maidened at night and it was a blast to fly, going inside the house and over the sidewalks while I just stood there in the garage. Flight times are about 4-5 minutes of fast FPV flying, a bit more if you’re just cruising.

Overall I’m very happy with this SubMini quad, which is what I’m going to call it, since it is smaller than what is considered a mini quad (250mm) and not quite a nano or pico quad. So, SubMini it is!

Photo Gallery:

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The Ghoul Part 2: Assembly – Building a better Phantom

Here’s part 2 of the Build a Better Phantom Series: a quad with T-Motors, SimonK ESCs and an APM Mini flight controller in a Phantom shell: The Ghoul. Please visit the first part of the series to get a list of components by clicking here. Here are links to additional guides and documents needed to complete this build.

Official APM documentation

Un-official guide: Mini APM from Witespy

Light module pinout and info

In part 3, I’ll show you footage captured on the Ghoul during the maiden flight and a lazy adventure around my local park (as soon as I figure out how to process video shot at 120fps). Stay tuned!

 

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The Ghoul: Building a Better DJI Phantom – Part 1

Introducing the Ghoul: a quad built with a DJI Phantom Shell, but with better components and more capabilities. I came across a DJI Phantom Shell while navigating ReadyToFlyQuads.com and decided to build a quad using that shell and powering it with a Mini APM and overall better components. This is what is needed:

In part 2 I will show you step by step how I put it together: stay tuned!

 

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Custom Designed 3D Printed Y6 Multirotor

Introducing my custom designed and 3D printed Y6 multirotor. After many hours of designing, printing, troubleshooting and test flying, I am finally showcasing my latest multirotor with the world. The frame base, motor holders, landing gear and 3-axis gimbal were printed 3D printed in ABS. The booms are carbon fiber tubes that are 330 mm long and 16 mm in diameter. Here are some additional specs:

It features a 3 axis gimbal that uses the following:

Stay tuned for flight footage of the Y6 flying and gimbal stablilized footage from the GoPro / gimbal.

Additional Pictures:

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