LoS Bargain Basement 6" Martian III

By cjdavies on Dec 11, 2017

3  320  10

I've legit never tried to fly rate/acro LoS before, so I figured I'd put together something from spare/cheap parts to hopefully learn. The ESCs were £1.50 each from Gearbest with some coupon, the motors are the ones I bought for my Armattan F1-6 but weren't smooth enough.

Photos

Part List

Frame

Realacc Martian III X Structure 4mm Arm 190mm 220mm 250mm Carbon Fiber Frame Kit w/ PDB for RC Drone (12 builds)
Banggood.com
$22.99

ESCs

4 x HGLRC BS28A BLHeli - S 28A ESC - $5.99 |GearBest.com (15 builds)
Gearbest.com
$23.96

Motors

4 x Cobra CM-2208 2000kv Motor (4 builds)
Getfpv.com
$75.96

Propellers

HQProp 6x4.5 DP 2CW + 2CCW Propeller PC - Blue (4 pack) (6 builds)
Getfpv.com
$2.99

Receiver

FrSky XSR 2.4GHz 16CH ACCST Receiver w/ S-Bus & CPPM (480 builds)
Getfpv.com
$14.99

Radio

FrSky Taranis X9D Plus 2.4GHz ACCST Radio & X8R Combo w/ case (Mode 2) (42 builds)
Getfpv.com
$244.99

Radio

FrSky Taranis X-Lite Pro ACCESS 2.4GHz Radio Controller (Deep Sea Blue) (10 builds)
Getfpv.com
$199.99

Goggles

Eachine EV800DM Varifocal 5.8G 40CH Diversity FPV Goggles with HD DVR 3 Inch 900*600 Video Headset Build in 2000mAh Battery (2 builds)
Banggood.com
$79.90

Goggles

FatShark Attitude V2 FPV Headset System w/Trinity Head Tracker and CMOS Camera
Hobbyking.com
See Site

HD Camera

GoPro HERO4 Session Video Camera GPCHDHS-102
$147.97

Video Receiver

Aomway DIV006 V4 DVR 5.8G 64CH Raceband FPV Receiver Built-in DVR w/ Auto Save Function
Banggood.com
See Site

Radio Module

Frsky R9M Lite Pro 900MHz Transmitter Module Up to 1W RF Power Compatible FrSky ACCESS Protocol for Taranis X-Lite Pro S and X9 (8 builds)
Banggood.com
$65.99

Radio Module

FrSky R9M 900MHz Long Range Transmitter Module for FrSky R9 Series (69 builds)
Banggood.com
$61.80

Soldering Iron

Hakko FX888D-23BY Digital Soldering Station FX-888D FX-888 (blue & yellow) (26 builds)
Amazon.com
$100.99
Show stores (6)

Discussion

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thumbtwiddler   Feb 06, 2018  

would you happen to know how to power a 5v output with the martian pdb? i need to power my board and fpv equipment

cjdavies   Feb 06, 2018 
1

Just connect a little regulator like this one to one of the spare sets of vbat pads.

https://www.banggood.com/5V-12V-Adjustable-Voltage-Dual-BEC-Output-Board-Only-1g-p-1031884.html?rmmds=myorder&cur_warehouse=CN

thumbtwiddler   Feb 07, 2018 

kinda looks like a polulu 5v. if it's the same thing, i think i have some laying around somewhere...

cjdavies   Feb 07, 2018 
1

Pololu is just a brand that makes voltage regulators (amongst other things), so yes you may already have something suitable if you have Pololu kit lying around :)

FreeKill998   Jan 09, 2018  

Out of curiosity did the Martian III come with a battery plate? I'm about to buy the 190mm version as I too go the HGLRC esc's on sale from gearbest for $1.99 and some 1806 motors for $15 total. Going for a budget build to just have some fun with and get to build cause thats half the fun.

cjdavies   Jan 10, 2018 

I don't think it came with a battery plate - I looked through the unused parts & the only extra carbon I have is the camera parts & a FC stack top plate.

Jodie Froster   Dec 11, 2017  

You should only zip tie your signal wires to your ground wires, the power wires can interfere with the signal. Best of luck to you, I have been working on LOS acro a lil and it has me spooked, I want to build a quad just for it too.

cjdavies   Dec 11, 2017 
1

Good shout, I didn't even think about that. There aren't ESC signal ground pads on this FC so it's probably best not to have the signal wires running along the power :3

FreeKill998   Dec 11, 2017 

Mind saying the promo code you used for the esc's

cjdavies   Dec 11, 2017 

It expired weeks ago.

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