Feeds

Reg reader crafts 3-axis GoPro 'Stubilizer' for skull-mounted cameras

'Vertical learning curve' for CAD and 3D printing novice Stuart Smith

Security for virtualized datacentres

Interview As our title suggests, we at the Special Projects Bureau like a nice project, so we're pleased to share with you today reader Stuart Smith's ambitious 3-axis stabiliser for the GoPro HERO3 - dubiously dubbed the "Stubilizer".

A 3D rendering of the Stubilizer

The Stubilizer in 3D rendered glory

Stuart's an IT consultant based in Ipswich, Suffolk, but when he's not fiddling for his supper down at the likes of British Airways, he's slaving over a hot 3D printer in his pursuit of his dream to take the stabiliser market by storm.

He and his company RockSolid Technologies will shortly be rattling the tin on Kickstarter, hoping to raise cash to get the Stubilizer into full production.

The development process has been heavy on CAD and 3D printing, so we asked Stuart - who was a novice in both areas when he started the project - to explain just how the journey to the current working prototype has been. Read on...

El Reg: What inspired your cunning plan for world camera stabiliser domination?

Stuart: Aha... seven years of trying to get good in-flight video while flying my paramotor and paraglider with helmet-mounted cameras.

I'd previously tried servo-based stabilisers but they were rubbish. In Jan/Feb last year a bloke in Russia, Aleksey Moskalenko, came up with a novel way of using brushless motors instead of servos in gimbals. - initially rewinding motors by hand into a different wiring pattern which let them become more like "torque brakes" than motors.

That technology progressed last year, initially as 2-axis stabilisers (roll and pitch only). As an avid RC quadcopter flier, I was on the bandwagon from day one.

By the third quarter of last year; 3-axis controllers had started to be supported (yaw added), and I build many DIY versions cobbling together bits of gimbals from here and there.

Bits and pieces from Stuart's early gimbal projects

Some bits from Stuart's early cobbling

And, by the end of 2013, a fair number of 3-axis gimbals were available from from China for R/C use. However, what they all have in common is:

  1. They are all pretty DIY looking things with wiring hanging off them everywhere. Usually the pictures don't show the wires, or the controller, so the end result looks like a rats' nest.
  2. They need setting up on a computer, which needs the user to know what they are doing, farting around with closed loop PID controls and the like.
  3. They are all for either handheld or R/C use, using potentially dangerous LiPo batteries.
A typical Chinese 3-axis gimbal for the GoPro

Room for improvement: A typical Chinese-made 3-axis gimbal

El Reg: Room for improvement, then. What were your initial design criteria?

Stuart: I wanted to create something that was:

  1. Sleek and robust with no wires anywhere.
  2. Works in the more aggressive area of action POV sports.
  3. A consumer device - no computers required, no LiPo batteries, and balance chargers, etc.
  4. Able to hold a GoPro INCLUDING the protective case - unlike everything out there.
  5. True plug-and-play for the GoPro POV market - paragliding and paramotoring, mountain biking, skateboarding.
Another 3D rendering of the Stubilizer

Sleek and robust: Another rendered view of the Stubilizer

El Reg: So, the rig is powered from the GoPro battery or does it have its own supply?

Stuart: No, it has its own battery in the design - the box at that back houses all the electronics and the battery. The GoPro hasn't exactly got stunning battery life as it is (you're lucky to get an hour out of it), so sucking power out of that wasn't feasible.

El Reg: Where are you at with the project?

Stuart: I've completed all the technical challengers - can it work, is it robust enough, are the motors powerful enough, are my chosen batteries safe, and do they have sufficient capacity. I've also made several electronic changes that no one else has which get rid of one of the main problems with current 3-axis gimbals - that of the yaw "losing its direction" after it is knocked off. Mine ALWAYS comes back to straight ahead.

I'm in talks with local assembly companies and Chinese companies for parts and circuit boards.

El Reg: What 3D kit are you using for prototyping?

A FlashForge dual extruder. It's a clone of the MakerBot Replicator, but arguably better. Weirdly, the Chinese are producing a clone which is , in my opinion, superior to the original.

The FlashForge 3D printer

Attack of the clones: FlashForge dual extruder

El Reg: Did you have any previous experience of CAD or 3D printing?

Stuart: No. Bog all. It's been a bit of a vertical learning curve to be honest. From weeks trying every CAD package under the sun before finding one that I though could do the job, and be used by someone with an IQ of less than 300, to then trying to actually learn how to "build things" rather than just how to use the CAD package.

Top 5 reasons to deploy VMware with Tegile

More from The Register

next story
MEN: For pity's sake SLEEP with LOTS of WOMEN - and avoid Prostate Cancer
And, um, don't sleep with other men. If that's what worries you
Voyager 1 now EIGHTEEN LIGHT HOURS from home
Almost 20 BEEELION kilometres from Sol
Jim Beam me up, Scotty! WHISKY from SPAAACE returns to Earth
They're insured for $1m, before you thirsty folks make plans
ROGUE SAIL BOAT blocks SPACE STATION PODULE blastoff
Er, we think our ISS launch beats your fishing expedition
Comet Siding Spring revealed as flying molehill
Hiding from this space pimple isn't going to do humanity's reputation any good
BAE points electromagnetic projectile at US Army
Railguns for 'Future fighting vehicle'
OK Google, do I have CANCER?
Company talks up pill that would spot developing tumors
LONG ARM of the SAUR: Brachially gifted dino bone conundrum solved
Deinocheirus mirificus was a bit of a knuckle dragger
prev story

Whitepapers

Why and how to choose the right cloud vendor
The benefits of cloud-based storage in your processes. Eliminate onsite, disk-based backup and archiving in favor of cloud-based data protection.
Getting started with customer-focused identity management
Learn why identity is a fundamental requirement to digital growth, and how without it there is no way to identify and engage customers in a meaningful way.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
Saudi Petroleum chooses Tegile storage solution
A storage solution that addresses company growth and performance for business-critical applications of caseware archive and search along with other key operational systems.
Internet Security Threat Report 2014
An overview and analysis of the year in global threat activity: identify, analyze, and provide commentary on emerging trends in the dynamic threat landscape.