Independent clubs
One teacher, a teaching room, and a steady group of students. C3NTR puts your topics, exercises and notes in one place.
For academic schools
A knowledge home for your robotics club.
Building, programming, design and the long arc of the project
→ See a quick tour
Free for up to 30 students
No credit card
UK GDPR · EU (London)
Works offline
Your club's curriculum deserves a home
Build choices get made on the bench and forgotten by next meeting. Code reasoning lives in the lead's head. Lessons from competition runs rarely make it back to the curriculum. C3NTR is a quiet place to write it all down once, in your club's voice.
Who this is for
Clubs with multiple teachers
Two or more teachers teaching the same subject. C3NTR holds the shared standard so every class draws from the same library.
Clubs entering competitive leagues
You compete in FRC, FLL or VEX. Content locked by level keeps newer members on tools while competition teams see strategy.
Built for teachers, not for IT
Your teacher opens the app, taps Edit, and writes the next build note in plain prose. The next meeting, the team arrives knowing the choice.
Write directly in the app
Like a notepad. New articles are drafts until you publish, so nothing goes live by mistake.
Mobile-first authoring
Edit on the phone between classes or on the way home. The same library, the same edit screen.
A working library in under an hour
Import the starter template in a few taps. Edit anything that doesn't fit. Publish when ready.
Levels, beginner, intermediate, advanced, competition
Content locked by level, in your club's progression
Tag any article with a minimum level. Beginners see basics and tools. Intermediate see programming. Competition teams see strategy. The same library, the right view per student.
A glossary of robotics terms
Robotics has its own vocabulary. C3NTR's glossary holds the terms in one place: the technical names, your club's definitions, and the article each term appears in.
- Microcontroller
- A small computer on a single chip, designed to control physical devices, the brain of most beginner and intermediate robots.
- Servo
- A motor that can be commanded to a specific angle, and holds that position against opposing force.
- PWM
- Pulse Width Modulation, a technique for simulating an analog (variable) voltage using only a digital pin that can be on or off.
- Sensor
- Any component that converts a physical quantity, distance, light level, temperature, sound, into an electrical signal that the controller can read.
- Actuator
- Any component that turns an electrical signal back into physical action, most commonly a motor, but also solenoids, valves, speakers, and displays.
- Breadboard
- A reusable board with rows of holes connected internally in patterns, used for assembling circuits without soldering.
Competitions, build days, mentor sessions
C3NTR isn't only the library. Schedule the next competition, post build days, and let members see what's ahead. Announcements land on their Today tab and events sit on the calendar.
Start from our Robotics template
A working starter with 15 articles, 2 short videos, a 8-terms glossary across 5 tags (Getting Started, Mechanics and Build, Electronics and Sensors, Programming the Robot, Projects and Competitions). Import in a few taps, then edit anything that doesn't fit your school. Every article, term and tag is yours from the moment you import.
See the Robotics template Template source:assets/templates/academic/robotics.c3t.md
Inside the app
A look at how the library, articles and grade controls feel in your students' hands.
Plays well with what you already have
Bring your existing lesson notes and exercises in with smart Word document import or paste Markdown directly from your club's archive.
Word documents
Smart import reads headings and turns them into draft articles. You review before anything publishes.
Markdown from any editor
Notion exports, Obsidian notes, Bear, plain .md files. Paste or import.
C3NTR templates
Open .c3t.md format. Schools can share templates with each other without us in the middle.
UK GDPR · DPA 2018
UK GDPR compliant. Hosted in the EU (London).
C3NTR is built around UK data protection law from the ground up. Your school's data sits in the EU on Google Cloud London, the same region we manage from.
UK GDPR + Data Protection Act 2018
Built around UK GDPR Article 6 lawful bases. Subject access requests answered within one calendar month.
Hosted in the EU (London)
Your school's data sits on Google Cloud in the europe-west2 (London) region. No transfer outside the UK or EEA for core operation.
Encrypted in transit
All data is TLS encrypted. Access restricted to personnel with a clear business need.
Account deletion on request
Permanent deletion of personal data and content via in-app or written request.
What C3NTR is, and what it isn't
A library your school owns
Another booking or billing system
Built for how schools actually teach
A generic course builder
Calm, focused reading for students
A feed competing for attention
Start free. Move up when you outgrow it.
Seed
Free forever
Up to 30 students
All core features. No credit card.
Start freeSchool
£39/mo
£32/mo billed annually
Up to 150 students
Push notifications. 1 GB media storage.
Choose SchoolAcademy
£69/mo
£57/mo billed annually
Unlimited students
Multi-instructor publishing. Engagement analytics. 5 GB media storage.
Choose AcademyStudent? Show this to your teacher.
If you study robotics and you'd love a quiet library you can return to between sessions, share this page with your teacher. Most clubs start on the free Seed plan in under five minutes.
Common questions
Can students only see their level's material?
Yes. Tag any article with a minimum level. New students see only foundations. Teachers see everything.
Does it cover FRC, FLL, VEX, your club's curriculum?
Yes. The starter is curriculum neutral. FRC, FLL, VEX can adapt without rewriting.
Can my club customise the robotics template?
Yes. Every article, exercise and term is editable. Add your club's curriculum, your favoured exercises and your house standards.
How long does it take to set up?
Most schools have a working library in under an hour. Import the starter template in a few taps, then edit anything that doesn't fit. Starting blank takes a little longer. Allow an hour or two to write your first ten articles. Students can use the app the day you publish.
Do I have to stop using my booking system?
No. C3NTR is a knowledge library for your curriculum, terminology and progressions. Booking, billing and scheduling stay with the tools you already use.
Is there a free plan?
Yes. Seed is free forever for up to 30 students, with no credit card required. Move up to School (£39/mo) or Academy (£69/mo) when you outgrow it.
Other academic disciplines
Teach a different style? Tell us.
Whether it's a specific robotics lineage we don't list, or another discipline entirely, drop us a line and we'll add a starter template. In the meantime, the app already works for any structured curriculum, your library starts blank in a few minutes.
Ready to give your robotics students a knowledge home?
Free for the first 30 students. No credit card. A working library in under an hour.
Start free for your school