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Brushed micro FPV quad build with Quanum Elite FX797T

DIY micro fpv quad with Quanum Elite

3d printed micro fpv quad

The Quanum Elite has recently opened up a whole new world making it easy to get started with micro FPVing.
The latest trend in the FPV world is undoubtedly brushed micro FPVing (especially the Tiny Whoop Inductrix build). What makes the micro FPV quads so popular is their small size, low weight, cheap parts and the ability to fly FPV indoors around your house and garden. If you like me have some micro quads lying around collecting dust (Like the Hubsan X4 h107 or the Eachine H8) you can easily convert them into micro FPV quads. The most popular micro fpv transmitter/camera combo is called Quanum Elite and is sold by Hobbyking. Banggood also carries their version called FX797T which is basically just a rebranded Quanum Elite. It is possible to build your own micro transmitter/camera fpv pack but it’s hard to get a clear fpv signal because of motor noise. To filter the motor noise in a diy setup you MUST use a Polulu regulator (increasing the complexity, cost and shipping time). A ready to go micro fpv transmitter/camera combo is not much more expensive and much easier to use.

Parts

Motors: 8.5mm motors
Frame: 3d printed micro quad frame from Thingiverse
Control board: Hubsan H107L X4 control board
Lipo: 300mah 1s, 500mah 1s or 600mah
Propellers: Hubsan propellers
Camera / Transmitter: Quanum Elite or FX797T

You can also just buy the complete Hubsan X4 H107C where the rc transmitter is also included.

Quanum Elite camera

Quanum Elite specs

Trasmitter power: 25mw
Input voltage: 2.5-5V, perfect for 1s power
Camera resolution: 600TVL
Output resolution: VGA 640×480
Field of view (fov): 120 degrees
Antenna: 3 lobe right hand circular polarized
Frequency: 5.8Ghz 5 bands 40 channels
Frequency band: 6558-5917
Size: 21x19x17mm (with case, excluding antenna)
Weight with case: 4.5g
Weight without case: 3.5g

Frequencies:
Band F: 5740, 5760, 5780, 5800, 5820, 5840, 5860, 5880
Band E: 5705, 5685, 5665, 5645, 5885, 5905, 5925, 5945
Band A: 5865, 5845, 5825, 5805, 5785, 5765, 5745, 5725
Band R: 5658, 5695, 5732, 5769, 5806, 5843, 5880, 5917
Band B: 5733, 5752, 5771, 5790, 5809, 5828, 5847, 5866

The build

As I mentioned earlier I had an old Hubsan x4 clone (7mm motors) collecting dust and when I saw the Quanum Elite I knew I was in for alot of fun. The first this I did was just tape to Quanum Elite to the top of my Hubsan and hooked it up to the main battery. I took it out to my garden and after a couple of batteries I was racing around the house.
After a while I felt that I wanted more power and started researching motor and frame options. The hubsan control board is capable of running the 8.5mm motors (even the 7mm motor version board) and they are so much more powerful. I decided to use these 8.5mm motors from Banggood and this 3d-printed micro quad fpv frame. The Hubsan control board fits perfectly in that frame and the motors are just friction fitted which means they will break lose in a crash instead of bending. It’s lightweight and there’s alot of room for both the lipo and camera on the top deck. The Quanum Elite is powered of my main lipo and I’ve never seen any motor interferance in my picture. I’m currently using 300mah lipos but the frame and motors can easily lift 500mah or 600mah lipos aswell.
The Quanum Elite is just attached with double sided tape and the lipo is held down with a household rubber band.

Printing and assembling everything to the frame is done in under two hours which is good because if you manage to break it then you can quickly have a new one flying again.
I’m planning to modify the frame a little in the future to make it even more sleek. I’ll upload the files here and on Thingiverse.

The best part of using a micro camera/transmitter combo like the Quanum Elite is that it can run of the same lipo that is powered the rest of the quad.