Birdbrain RC SKEW_T

By CarbonRain on Feb 19, 2021

21  239  3

So, the MiniSKEW_L is small and all, but once I realised the JHEMCU FC I used in it had a smaller 16x16 sibling, I had to pick one up to try, and came back to an old failed frame design to put it in.

Alt Tag

I originally designed a tiny toothpick size plus frame way back in mid 2019 when 16x16 FCs and ESCs started becoming more widely available, but the first I got (a Diatone Mamba) turned out to be quite fiddly to solder. After a long struggle to get it together, I finally went to power it up...and it had a dead ESC. I rage quit the project, and it sat on my shelf, gathering dust.

Alt Tag

The frame did get a reworking for the new FC - the pod was redesigned to allow the antenna to be pushed through from the inside (original required it to be pushed from the outside, then the UFL clipped to the VTX, which was a huge pain), and the baseplate was reworked to be asymmetrical rather than having both side arms swept back, which brought the motor wires out at the corners of the ESC rather than needing the wires to be fed over the top of the ESC to reach the far pads.

Alt Tag

To fit the VTX and RX, I opted to make a shelf for them as I have in several other quads. I found the nuts were getting in the way, so decided to just drop the hole diameter so the screws grip the printed part tightly, giving a nice flush surface for the electronics to sit on. The components were reused from the original Mamba based build - a NamelessRC VTX, Foxeer Predator Nano (with connector, soldered would be much better from a squishing everything in point of view), and an XM RX. A 3D printed antenna mount which runs parallel to the capacitor should keep it from getting chopped in the props.

Frame weight: 14g, dry build weight: 54g. Got a couple of different sets of props to try with it, and still waiting on some little LiPos, but hopefully should be a fun little ripper for small spaces!

Photos

Part List

Flight Controller

16x16mm JHEMCU GHF13 AIO F4 OSD Flight Controller Built-in 13A Blheli_S 2-4S 4 In 1 Brushless ESC for RC Drone FPV Racing (2 builds)
Banggood.com
$34.97

Flight Controller

M2 Anti Vibration Silicone Grommets Soft Mount For Flight Controllers x10
Ebay.com
$3.99

Motors

4 x AMAXinno 1103 5000KV 1-3S Brushless Motor 3.7g for RC Drone FPV Racing (3 builds)
Banggood.com
$61.48

Propellers

4 Pairs GEMFAN 65mmS 65mm 2-blade 1mm/1.5mm Hole Propeller for Toothpick RC Drone FPV Racing
Banggood.com
$2.99

Propellers

2Pairs Gemfan Hurricane 2512 Durable 3 Blade 2.5" Propeller for Toothpick FPV Racing RC Drone (2 builds)
Banggood.com
$2.99

Propellers

4 Pairs GEMFAN 65MM 2-blade 1.5mm/1.0mm Shaft Propeller for 0802-1105 Brushless Motor RC Drone FPV Racing
Banggood.com
$2.71

FPV Camera

Foxeer Predator V5 Nano FPV Camera (Black)
Hobbyrc.co.uk
$46.02

FPV Transmitter

NameLessRC Nano400 VTX 5.8G 48CH PIT/25mW/100mW/200mW/400mW Switchable FPV Transmitter VTX for RC Drone (4 builds)
Banggood.com
$16.99

Receiver

FrSky Ultralight XM Mini RC Receiver Up To 16CH for RC Drone FPV Racing (5 builds)
Banggood.com
$16.16

Batteries

Turnigy Nano-Tech 450mAh 3S 45C Lipo Pack w/XT30
Hobbyking.com
$9.49

Radio

Jumper T-Lite 16CH Hall Sensor Gimbals CC2500/JP4IN1 Multi-protocol RF System OpenTX Mode2 Transmitter Support Jumper 915 R900/C (2 builds)
Banggood.com
$65.99

Radio Module

TBS CROSSFIRE NANO TX (7 builds)
Pyrodrone.com
$69.95

Radio Module

FrSky R9M 2019 Transmitter Module w/ Super 8 Antenna (ACCST/ACCESS)Default Title (16 builds)
Racedayquads.com
$45.99

Radio Module

Frsky R9M Lite - Radio Transmitter Module (Black) (12 builds)
Getfpv.com
$44.99
Show stores (7)

Discussion

Sign in to comment

dwhacks   2 days ago  

Ok ok, this caught my eye RIGHT away. I hope you are going to be selling the frame! Put me first in line!

fovea   11 days ago  
1

awesome!

DannerD3H   11 days ago  
1

Nailed it!.. Again xD

Guides & Reviews

37 6,451  52
Nov 19, 2020

FPV has had quite a journey. Just a few years ago we started racing drones around a track and doing flips over trees, but professional cinematic FPV is a more recent development. DJI has always owned the drone photography market, but smaller acrobatic drones are starting to enter the market. They have the advantage of close proximity flight indoors and around people. There's more artistic freedom and..

Read more
Aug 26, 2020

For the longest time we've been limited to 3 to 4 minutes of flight and lots and lots of batteries. With more efficient motors and frame designs it's now possible to push the envelope much further. This guide will walk you through the process of building a micro long range quad capable of flying 8-30 minutes and more than 4km. The build is moderately difficult, but with the right tools and steady hands..

Read more