Build any robotyou imagine.Watch it run.
A free-form 3D robot workshop — right in your browser. Snap parts together, add real physics, and watch your creation come alive. No downloads, no limits.
By the team behind SUBO·Used in 500+ schools·India · USA · UAE · Australia
📬 All updates about Constructa — new features, releases & tips — are sent straight to this email. No spam.
Join the WhatsApp communityMeet the Winners
The top 6 builds from the Constructathon. Tap a name to open their robot in the community gallery.
Congratulations to all our builders! 🎊 Built by AtumX.
Three steps.
That's the whole product.
Build
Drag shapes into a 3D workspace. Snap parts together. Attach motors, wheels, sensors. There are no templates here — you're starting from your own imagination every time.
Run
Hit play. Your robot moves based on what you built and what you coded. If your design is wobbly, it falls. If it's clever, it works. Real physics, no shortcuts.
Code
Blockly for beginners. Python for intermediate. C++ for advanced. Pick how you want to talk to your robot. Same robot, three ways to teach it.
Anything that moves.
You build it.
01 / 05A six-legged spider that walks.
A servo on every joint, an OLED and an ultrasonic sensor riding on top. Code the gait and watch all six legs find their rhythm with real physics.
02 / 05A car that drives on wheels.
Two motors, a chassis, a pair of wheels. Give it eyes and a face, then send it rolling across the floor with a few lines of code.
03 / 05A scorpion that grabs with claws.
Pointed legs to stand, pincer claws to grab, a curled tail arched overhead. Stack the joints, add the grippers, and pick things up.
04 / 05A robot that waves hello.
A servo arm that lifts and an OLED that talks back. Tell it to raise a hand and flash “High five!” — your first robot with personality.
05 / 05A duck that walks on two legs.
Two legs, four servos and a wobbly sense of balance. Or a six-wheeled rover, a robot dog, a flying frame — the tool doesn't care what you build. Neither do we.
Why this exists.
For four years we've been making robotics kits for schools. Real kits, in real classrooms, in 500+ schools across India, the USA, UAE, and Australia.
Every month, the same thing happens. A kid wants to build a robot. They imagine something cool. Then reality hits. They need to find the parts. Figure out the wiring. Hope it works. Most quit before they finish.
So we built the tool we wished existed. Build any robot in your browser. Test it with real physics. If it works, build it for real. If it doesn't, try something else. No money. No hardware. No quitting.
— The AtumX team, Chennai
Three things no other tool does.
Free-form, not pre-built
Most robot tools give you templates. We give you a blank 3D canvas. Build any shape. Attach any sensor in any position. Your imagination is the only constraint.
Real physics, not animations
Your robot walks, falls, drives, flies based on how you actually built it. Wobbly designs fail. Clever designs work. Same as the real world.
Runs in your browser
Open it in Chrome, Edge, Firefox or Safari — no installs, no payments, free during beta. Just bring a computer (Constructa needs a big screen to build big robots).
Backed by people who build the future.
Awards, grants & partnerships from India's innovation ecosystem
Questions, answered.
Yes. Free during beta. We're a hardware company — the tool is how we say thanks to the maker community.
Nope. It runs right in your browser — Chrome, Edge, Firefox or Safari. Just use a computer: Constructa needs a big screen to build big robots.
Constructa is built for a desktop-size screen, so it isn't playable on a phone yet. Drop your email and we'll send you a link to open your workshop on a computer.
Any robot you imagine. Wheels, legs, arms, sensors, motors. Free-form 3D building, not pre-built templates. If you can dream it, you can build it.
Three. Blockly for beginners. Python for intermediate. C++ for advanced. Same robot, three ways to code it.
Constructa is free to jump into right now — just hit Launch. Drop your email too and we'll send every new feature, release and tip straight to your inbox. If you described a robot you'd build, we might build it and feature you.
A robotics hardware startup based in Chennai, India. Making STEM kits since 2022, used in 500+ schools across four countries. SUBO is our flagship board — Constructa is our workshop in the browser.
Ready to build
something weird?
Jump into the workshop now — or drop your email to get every update. Free, no login.
📬 All updates about Constructa — new features, releases & tips — are sent straight to this email. No spam.
Join the WhatsApp community