View source for Hoverthings Parts Bin Quad

[[File:BTI.png|link=The_Airforce|Air-Force]]<br>
<i>October 2013</i><br>
<br>
{| border="0" cellspacing="1" cellpadding="1" width="900" align="center"
|-
| align="center" | [[File:PB000.jpg|900px]]
|-
| align="center" | HT-FPV + Talon Bits + an APM 2.5 and a Camera Gimbal
|}
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==<br> The Parts Bin Quad Build Log  ==

My two camera platforms, TBS Discovery and Turnigy Talon are small taking only a maximum ten inch prop and not providing more than eight to ten minutes of real flight time. So I started looking at what was available when I realized I had a bare Hoverthings HT-FPV frame and some bits and pieces from a couple of other builds. Looking at the "Parts Bin" I saw I could throw together a ship capable of utilizing 15" propellers without spending too much money. These notes then are this new design journey...<br><br>

== General Specifications  ==

Build Date - October 2013<br>

{| cellspacing="1" cellpadding="1" width="75%" align="center" border="0"
|-
| align="right" | Airframe Type - 
| Multi-rotor, Asymmetrical Spyder Quad-X 
| width="75" | 
| align="right" | Flying Type - 
| Aerial Photography
|-
| align="right" | Motor Centers - 
| Adj 24" to 26" (610 - 660mm) 
| 
| align="right" | Bare Weight - 
| 48.5oz (1375gr) w/12" props
|-
| align="right" | Max Rotor Area - 
| 15" - 706.84in^2
| 
| align="right" | AUW Weight - 
| 61oz (1730oz)
|-
| align="right" | Motors - 
| Multistar 4225/610Kv X4
| 
| align="right" | Propellers -
| HKCF 13 x 5.5
|-
| align="right" | Power - 
| 1320 watts MAX 
| 
| align="right" | Thrust - 
| 145oz (4120gr)
|-
| align="right" | Thrust/Weight - 
| 2.38:1
| 
| align="right" | Battery Type - 
| Lipoly - 5400mah, 3S, 35C 
|-
| align="right" | Speed Control (ESC)- 
| Q-Brain 20A (80A total)
| 
| align="right" | BEC - 
| Switch Mode 3A, 5.25v
|}
<br>

=== Component List ===

The component list includes all the major components needed. What is not shown are additional fasteners tie-wraps, connectors, G10 materials, battery's, etc. Prices are shown only for the parts I had to buy.<br><br>

{| border="1" cellspacing="1" cellpadding="1"
|-
| width="350" | '''Item&nbsp; (as of June 22, 2012)''' 
| width="60" | '''Price''' 
| '''Quant''' 
| width="60" | '''Sub-Tot'''
|-
| HT-FPV Frame Kit in Camo 
| $- 
| style="text-align: center" | x1 
| $-
|-
| Talon V2 Extended CF Tubes, 14mm 
| $- 
| style="text-align: center" | x4 
| $-
|-
| Talon V2 Tube Mounts 
| $- 
| style="text-align: center" | x4 
| $-
|-
| Talon V2 Motor Mounts 
| $- 
| style="text-align: center" | x4 
| $-
|-
| McMaster Aluminum 1" x 4-40 Stand-off 
| $0.37 
| style="text-align: center" | x8
| $2.96
|-
| McMaster Aluminum 1-1/4" x 4-40 Stand-off 
| $0.58 
| style="text-align: center" | x9 
| $5.22
|-
| Multistar 4225/610Kv 
| $29.46 
| style="text-align: center" | x4 
| $117.84
|-
| APCmr Props 12 x 4.5 
| $3.96 
| style="text-align: center" | x4 
| $15.84
|-
| Q-Brain 4X20A ESC 
| $29.31 
| style="text-align: center" | x1 
| $29.31
|-
| KK 2.0 -or- APM 2.5 Flight Controller 
| $- 
| style="text-align: center" | x1 
| $-
|-
| Spektrum AR6200 Receiver 
| $-
| style="text-align: center" | x1 
| $-
|-
| 
| 
| style="text-align: right" | '''Total-''' 
| '''$171.17'''
|}
<br><br>

== What I Threw Together ==

These build notes are about the the build of a quad frame mostly from parts I had from different projects. I did buy motors because I wanted to try the HK Multistar 16 pole series, an HK ESC called the "Q-Brain" because it has 4 ESC's and all the power distribution built right in, and some aluminum stand-offs to replace the too short stand-offs the HT-FPV frame came with.<br><br>

=== Frame Base ===

On the frame base plate I added 2 pieces of G10 fiberglass from McMaster Carr to help stiffen the frame from side to side. I bolted it all together using 4-40 screws and Aluminium stand-offs from MacMaster which fit perfectly. I did cut one down by 1/16" (1.5mm) which had to sit atop one of the G10 plates. I set the arms up at 90 degrees in the rear and XX degrees front which gives a layout that will support up to a 15 inch prop. I used a spyder layout to minimize prop interference in the video.<br><br>

{| border="0" cellspacing="1" cellpadding="1" width="900" align="center"
|-
| align="center" | [[File:PB004.jpg|800px]]
|-
| align="center" | Mod components on the HT-FPV base plate
|}
<br>

=== Power & ESC's ===

For this project I decided to give the HobbyKing Q-Brain 4-in-1 ESC and distribution unit a shot. Basically it is 4, 20 amp ESC's built on a single board with a single 3A, 5.25v switch mode BEC. At 112gr (3.95oz) it isn't light as it has a very robust heat sink plate on top. I mounted it on three nylon 6mm tall stand-offs so it sits between the two main frame plates for max air flow.<br>

It really does a nice job of cleaning up the wiring and it eliminates the need for a power distribution board (which can save some weight). <br>

{| border="0" cellspacing="1" cellpadding="1" width="900" align="center"
|-
| align="center" | [[File:PB005.jpg|800px]]
|-
| align="center" | Loaded up with a Q-Brain 4x 20A ESC
|}
<br><br>

{| border="0" cellspacing="1" cellpadding="1" width="900" align="center"
|-
| align="center" | [[File:PB032.jpg|800px]]
|-
| align="center" | Bottom view showing second receiver and gimbal control board
|}
<br><br>

=== Geometry ===

I spent some time comparing various spyder quad layouts and decided on the geometry as shown below. The layout is designed to fit a 15" (381mm) propellers with a gap of ~1" (25mm). The arm tubes are adjustable from 9.4" (240mm) to 10.4" (265mm). The layouts shown below depict 15" props with the arms adjusted to 260mm.<br><br>

{| border="0" cellspacing="1" cellpadding="1" width="900" align="center"
|-
| align="center" | [[File:PB010.jpg|800px]]
|-
| align="center" | Geometry layout in inches
|}
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<br>
{| border="0" cellspacing="1" cellpadding="1" width="900" align="center"
|-
| align="center" | [[File:PB011.jpg|800px]]
|-
| align="center" | Geometry layout in millimeters
|}
<br><br>

=== Brushless Gimbal ===

With all the great success I have had with the brushless gimbal on my TBS Discovery, I decided this project would include a similar one one as well. I already had an extra board and motors so it was a simple effort to make up a mount and a pair of swing brackets to build it on the frame. More information here: [http://www.itsqv.com/QVW/index.php?title=Easy_Brushless_Gimbal Easy Brushless Gimbal]


{| border="0" cellspacing="1" cellpadding="1" width="900" align="center"
|-
| align="center" | [[File:PB030.jpg|600px]]
|-
| align="center" | Brushless Gimbal for GoPro
|}
<br><br>

== See Also ==

[[Easy Brushless Gimbal]]

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==== Comments? Questions? ====

'''<u>[mailto:qmar80@hotmail.com email me!]</u>'''

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[[Category:Contents]]