VULU DESIGN
Rotus
ONE MECHANISM. ZERO BLOCKED BUTTONS.
ROTUS — Xbox Controller Steering Wheel Attachment
Apparatus
A mechanical steering apparatus that brings pistol-grip precision to Xbox controllers. Designed in Istanbul, hand-assembled with hybrid manufacturing.
FIG.01 — GHOST ARCHITECTURE
Mounts on the controller. Blocks nothing on it.
The V-shaped steering arm sits on the lower-center face of the controller. Your hand only touches the grip points — no button is ever blocked.
A — GT2 belt drive system
B — Neodymium lock system
C — Optimized gear geometry
D — LM3UU precision bearing
DEV.TIME
3+ Yrs
PROTOTYPES
300+
MECH.LIFE
10M+
SWAP
1s
manufacturing
hybrid — 35% FDM (rigid skeleton) + 40% SLA (silky outer texture) + 25% precision metal components
mechanism
Precision micro-springs + optimized gear geometry
bearing_system
LM3UU industrial precision bearings
mech_life
10 million+ cycles (stainless steel micro-springs)
lock_system
Neodymium lock system — free movement on Y axis
button_blockage
zero — A/B/X/Y, triggers, bumpers, d-pad, right stick fully accessible
mounting
1-second swap — screwless, mechanical + magnetic hybrid lock
axis
X-axis (left-right) in production — Y-axis in development (accessibility focus)
compatibility
Xbox Series X controller — in production
weight
41 g
colorways
Multiple colorways — shown in the product photos
hand_orientation
Right-hand mount only — left-hand version in development
in_development
Xbox Series S and Xbox One, PS5, left-hand version, Y-axis
warranty
Vulu Design production warranty
price
GG Spirit $49 · Standard $29 · GG Grant $0
FIG.02 — SYSTEM IN ACTION
VIEW 01
VIEW 02
VIEW 03
VIEW 04
CHANNELS // SEE IT IN USE
Gameplay footage, builds and prototypes.
Every version of Rotus was tested on camera before it shipped. The full library lives on our channels.
YOUTUBE
@RotusApparatus
Gameplay runs and mechanism tests
INSTAGRAM
@rotusapparatus
Build log, prototypes and community messages
GG GRANT // Free Accessibility Program
GG Spirit sales fund a free version of Rotus for players with limb loss or functional difficulty.
For us, accessibility is a fundamental engineering debt. The GG Grant program takes Rotus beyond being a commercial product. For our friends experiencing limb loss or functional difficulty in their hands, this technology is entirely free. Proceeds from GG Spirit sales fund this program, letting us remove barriers in gaming with mechanical advantage. If you need this performance, we don't ask for documents — just share your story with us.
WHO CAN APPLY
01 People experiencing hand or finger loss
02 People with motor skill difficulty
03 Family members or caregivers applying on their behalf
04 No documentation required — a brief summary of the situation is enough
— YUSUF, 19 · A FRIEND EXPERIENCING FINGER LOSS · ADANA
"Because of this I can play games."
"I finally found the product I actually needed."
"I finally found the product I actually needed."
He messaged us on Instagram after seeing one of our posts.
GG GRANT APPLICATION
OUR STORY // VEDAT, ISTANBUL
I Just Wanted a Real Steering Wheel.
I'm Vedat, founder of Vulu Design. I'm not an engineer — I'm a music producer and DJ. But I'm a rally addict, mostly playing Dirt Rally. Dirt Rally or GTA, it didn't matter — whenever I tried fast, precise maneuvers in a game, I hit the same wall: the standard controller's thumbstick can't give you a real steering wheel's precision, and a full wheel setup is expensive and takes up space. This wasn't just my problem — it's every controller player's problem.
My idea was clear: bring the "pistol-grip" fine-control feel of RC cars to a standard Xbox controller with a cheap, portable add-on — an affordable, practical alternative to sim-racing. I turned a small corner of my Istanbul apartment into a workshop and got to work. I had no design background, no 3D printing experience. With calipers in hand and a few 3D printers around me, I printed 300+ prototypes — gears, bodies, parts I designed specifically for Rotus. Setbacks shelved the project more than once; the back-and-forth development took over three years.
While developing, I noticed something I hadn't expected: the mechanism also let you control the game one-handed — a side effect I never planned. Then a message came from Yusuf: "Because of this I can play games." That message brought the shelved, dormant project back into my hands. Today Rotus is a system that locks onto an Xbox controller magnetically, eliminating analog drift with Ghost architecture and a torque-limiting mechanism. Accessibility was a discovery for me, not the origin — but today it's a real, central part of Rotus and Vulu Design.
$ rotus --log --all
01 sim-racing precision problem — thumbstick not enough in Dirt Rally & GTA, full wheel setup expensive and bulky
02 300+ prototypes — gears, bodies, and parts custom-designed for Rotus
03 discovered the mechanism also enables one-handed control — a discovery
04 Yusuf, Adana — "Because of this I can play games" message revived the shelved project
05 "Hardware Democratization" mission became clear
LAB 01
LAB 02
LAB 03
LAB 04
"Designed to unleash every player's potential."
— Vedat, founder
COMPARISON // WHERE ROTUS SITS
Four ways to get finer steering control.
ROTUS
SIM RACING WHEEL
THUMBSTICK TOPPER
ADAPTIVE CONTROLLER
price
$29–49
$200–1,500+
$10–20
$99 + accessories
setup
1 second, screwless
desk mount and cabling
push-on
console setup, external switches
space
none — fits in a pocket
dedicated desk or rig
none
desk unit
steering_travel
mechanical gear reduction on the stick
full wheel rotation
added grip height only
depends on attached hardware
buttons_blocked
none
replaces the controller
none
replaces the controller
portable
yes — travels with the controller
no
yes
no
Prices are indicative market ranges as of 2026, for orientation only. Rotus figures are estimates for the first production run.
PRICING
GG Grant
$0
Accessibility program — for our friends experiencing finger or hand loss or functional difficulty
Join Waitlist
No payment is taken at this stage — we are only collecting demand. Prices are indicative and may change for the first production run.
FAQ // BEFORE YOU ASK
When will Rotus ship?
The first production run has no confirmed date yet. Everyone on the waitlist gets an email before it opens.
Am I paying anything now?
No. The waitlist takes no payment and creates no obligation. We use it to size the first run and to tell you when it opens.
Which controllers does it fit?
The Xbox Series X controller is supported in production today. Xbox Series S, Xbox One and PS5 versions are in development, with no date yet.
Does it block any buttons?
No. The Ghost architecture sits on the lower-center face of the controller — A/B/X/Y, triggers, bumpers, d-pad and the right stick stay fully accessible.
How does the GG Grant work?
Fill in the application form with a brief summary of your situation. We ask for no documents. GG Spirit sales fund the program, and Rotus is free for the people it covers.
Do you ship outside Turkey?
Rotus is assembled in Istanbul. International shipping is planned for the first run — countries and costs will be announced to the waitlist.
Join the Waitlist
The first production run is limited. Reserve your spot — no payment, no obligation.
No payment is taken. Prices are indicative.
CONTACT // GET IN TOUCH
Got questions?
Write to us, or join the waitlist to hear about the first production run.
email
mgmt@vuludesign.com
workshop
Istanbul, Kadıköy
visits
By appointment only
founder
Vedat Mutlu
instagram
@rotusapparatus
PRIVACY // KVKK NOTICE
What we do with your data
Vulu Design is the data controller for the information you enter in the forms on this site: your name, your email address, and — for the GG Grant application — the situation you describe.
Purpose and legal basis: waitlist and contact data are processed on your explicit consent, to inform you about the first production run and to answer your message. They are not used for any other purpose and are not sold or shared with third parties for marketing.
GG Grant applications may contain health-related information, which is special-category personal data under KVKK art. 6. It is processed only on your explicit consent, only to assess your application, and only by the people running the program.
Storage: submissions are held by our form provider and our email account. Waitlist data is deleted at the latest 12 months after the first production run; grant applications are deleted once the application is closed.
Your rights: you can ask at any time what data we hold, have it corrected or deleted, and withdraw your consent. Write to mgmt@vuludesign.com and we will action it.
ROTUS
© 2026 Vulu Design — Rotus, designed in Kadıköy, Istanbul
Vulu Design · Nakil Sk. 14/4, 34716 Rasimpaşa, Kadıköy/İstanbul · +90 555 641 63 04 · vuludesign.com