Purple Haze

By Carbon_Rob on Aug 16, 2017

12 2,417 19

I took a chance on some untested micro components for this build to get an ultralight racer. This thing could have been sub-200g if I had went with the Hyperfloss 2204 motors, but I went for 2205 V2. I've put 10 batteries through the 20x20 stack with no issues, fingers crossed. My only complaint so far is that current sensing seems to be non-functional. I haven't been able to get it even close to calibrated. Cyclones are moderately amp hungry props, so I'm impressed with this little 4in1 esc. I did add a capacitor. We will see if it can handle the abuse of the track this weekend. The Eachine Vtx03 has proven to be a good little vtx. After doing some research to make sure it will actually broadcasted on 25mw, I gave it a shot. I'm powering it, and the camera, from the 5v regulator on the fc, and the video quality is perfect. Sorry if the scale is hard to read in the picture, it's 227.6 dry. Thanks for looking.

Photos

Part List

Frame	Hyperlite FLOSS 5 inch Racing Frame (25 builds) Pirofliprc.com	$44.99
Flight Controller	FLIP 32 - F4 - OMNIBUS NANO V2 (5 builds) Readytoflyquads.com	$29.99
ESCs	25A Ori 4in1 ESC (20x20) BLHELI_S - (MUILTSHOT) (4 builds) Readytoflyquads.com	$36.99
Motors	4 x HyperLite V2 2205-2600 Naked Bottom Pirofliprc.com	$51.96
Propellers	DAL T5045 Cyclone Tri-Blade (19 builds) Dalprops.com	$2.89
FPV Camera	RunCam Micro Swift (119 builds) Pirofliprc.com	$29.99
FPV Transmitter	Eachine ATX 03 Video Transmitter - 25/50/200mw (VTX03 with Audio) (2 builds) Racedayquads.com	$13.99
Receiver	FRSKY XM+ Receiver - SBUS (332 builds) Racedayquads.com	$12.99
Batteries	Tattu 1300mAh 75C 4S1P lipo battery pack (73 builds) Pirofliprc.com	$28.99
Misc Parts	Panasonic 330uf 25v Low ESR Capacitor for ESC Noise Reduction (2 builds) Racedayquads.com	$0.99

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Discussion

Rhygin 24 hours ago

Great stuff... I am going to do something similar but will be using the same FC and ESC combo. I have been staring at the ESC alignment and your "wires" pic. Did you move around the signal pins? When I visualize the build it looks to me like I would have to run the wires all over the place to get from, for example pad 4 to motor 4. Any advice or insight?

1 Response

Carbon_Rob 23 hours ago

You can remap the motor resources in Betaflight and solder whichever motor to whichever esc pads make the most sense.

ClfHngr 9 days ago

Awesome build! Did your Ori come with the heatsink? If it did, from the looks of it, it seems you didn't install it with the Ori. I'm trying to figure out if I should install it to the ESCs or not .. and how it would install too.

1 Response

Carbon_Rob 9 days ago

Mine did not come with a heatsink.

Carbon_Rob 14 days ago

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mascaras 20 days ago

Hi ROB very nice build ! im building a super light 4" racer and i bought the new Omnibus F4 nano v3 LC and Ori 4in1 25A ESc . I also ordered the runcam Micro and eachine VTX03 , how do you wire the cam and VTX to the FC to get OSD ? Eachine VTX03 conected to the VIn & Vout + GRD & 5V of the FC Bec and the runcam micro connected to the VTX? also another question , if i use the 4in1 cable from the ESC to the FC it will also power the FC and i get OSD current sensor or do i need to power the FC from the VCC/XT60 ?

1 Response

Carbon_Rob 20 days ago

Thanks! So you'll want to connect the signal wire on the camera to the VIN (video in) and the signal wire on the VTX to VOUT (video out). I powered both the camera and the vtx from the 5v bec on the Nano F4. As far as current sensing goes, there is no shunt resistor on either the Nano or the Ori, though if you were to use a 4in1 with a shunt resistor, the Nano would probably support it since there is a wire marked current on the JST connector. I just connected the battery lead to the Ori and plugged in the JST and it powered the Nano and provided lipo voltage in the OSD. Good luck!

jwangdk 29 days ago

How is that pretty tucked-away VTX antenna placement working? I would think it needed to have more clearance from the frame?

Sick build! :O

1 Response

Carbon_Rob 29 days ago

Thanks! I haven't had any problem with reception, if that's what your wondering. I haven't changed it from 25mw or swapped out the dipole antenna, but keep in mind, I am using a LaForge diversity module in my Fatsharks, which is exceptional.

Carbon_Rob Aug 23, 2017

A short, comedic flight video.

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CesiumSalami Aug 23, 2017

Came here to say: "UNBELIEVABLE! What an awesome and well built quad - it must just be insanely fast."
But read your comment and thought I'd add: I find it incredibly frustrating that RTFQ descriptions are consistently off. Neither the FC nor the ESC have current sensing (as far as I can tell). The FC has an INPUT for current sensing so if your PDB or ESC was outputting scaled current values you could display that. But as it stands, the ESC does NOT have current sensing. When you enable current sensing on something like this you're just getting gibberish. There's no scaling value you can set to get an accurate reading. I mean neither the FC nor the ESC have a shunt resistor .... which every ESC/FC these days uses for current measurement. Maybe they're doing something else, but RTFQ has an error in pretty much every single one of their listings.

1 Response

Carbon_Rob Aug 23, 2017

Thank you, and yes it's incredible! You are absolutely right about the current sensor and RTF Quads. I came to the conclusion that the FC probably supports an external current sensor, but the ESC doesn't have one. The ESC is still working great after quite a bit of punishment, knock on wood.