Leonardo's Machines: The Complete Masterclass
Like Duolingo, but for Leonardo's Machines: The Complete Masterclass. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
For the part of you with thirty open tabs that never became anything.
Free during early access · No credit card · iPhone & Android

Key ideas in Leonardo's Machines: The Complete Masterclass
- How gears trade speed for the ability to lift heavy weights
- The consequence of connecting a large gear to a small one
- Smooth surfaces slide against each other when under heavy pressure
- Interlocking teeth lock the wheels together to prevent slipping
- Angled teeth allow power to turn corners
- Different gear shapes are used to redirect energy to where it is needed
- Why teeth are superior to smooth rollers for heavy work
- How different gear shapes change the direction of motion
- Power builds up as you move from smaller gears to larger ones
- The final, largest gear in the chain provides the most force
- A large input gear driving a much smaller output gear
- The output side of the machine moving faster than the person's hand
- The sequence of energy through a gear train designed for power
- Identifying a high-speed gear setup versus a high-power setup
- The lantern gear uses vertical rungs to catch teeth from a different angle
- This specific design was essential for changing the direction of force
You've tried the other tabs
Thirty open tabs. Four facts you actually kept.
You watched. You nodded. By Sunday it was gone.
One answer, then back to scrolling.
Eight weeks. You meant to finish. You didn't.
Tomo gives Leonardo's Machines: The Complete Masterclass the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.
Here's what playing it feels like
A real question from this course. Take your best guess.
If a large gear with 40 teeth turns a small gear with only 10 teeth, what happens to the small gear?
Get it right to open this lesson and 214 more in the app.
Where Leonardo's Machines: The Complete Masterclass takes you
Step into the workshop of history's greatest polymath. From armored tanks and flying screws to robotic knights and hydraulic bridges, master every mechanical marvel Leonardo da Vinci ever dreamed of.
- 1
Build It First: The Basics of Motion
- Gears and Cogs: Turning Wheels into Work
- The Power of the Crank and Connecting Rod
- Ball Bearings: Making Heavy Things Roll
- The Worm Gear: Lifting Massive Weights Alone
- 2
Taking to the Skies: The Flight Designs
- The Ornithopter: Flapping Like a Bird
- The Aerial Screw: The First Helicopter Concept
- The Glider: Balancing on the Wind
- The Pyramid Parachute: A Safe Way Down
- Measuring the Air: Wind Vanes and Anemometers
- 3
Tools of the Trade: Workshop Automation
- The File-Cutting Machine: The First Industrial Robot
- The Rolling Mill: Making Perfect Metal Sheets
- The Gold-Beating Machine: Automating Fine Art
- The Screw-Cutting Lathe: Precision Threads
- 4
The Art of War: Offensive Inventions
- The Armored Car: A Turtle-Shell Tank
- The 33-Barreled Organ: Rapid Fire Artillery
- The Giant Crossbow: Engineering Massive Tension
- The Scythed Chariot: Blades in Motion
- The Steam Cannon: Launching with Water
- 5
Defending the City: Military Engineering
- Curved Walls: Deflecting Cannonballs
- The Temporary Bridge: Fast Moves for Armies
- The Double-Deck Bridge: Separating Traffic
- 6
Mastering Water: Hydraulics and Diving
- The Archimedean Screw: Moving Water Uphill
- The Diving Suit: Breathing Under the Waves
- Walking on Water: Buoyant Shoes and Poles
- The Double-Hull Ship: Surviving a Collision
- Canal Locks: Moving Boats Between Levels
- 7
The First Robots: Automata and Programming
- The Mechanical Knight: Pulleys as Muscles
- The Self-Propelled Cart: The First Programmable Car
- The Mechanical Lion: A Royal Surprise
- The Programmable Drum: Mechanical Music
- 8
Precision and Measurement: Scientific Tools
- The Odometer: Measuring Distance with Pebbles
- The Hygrometer: Predicting Rain with Wool
- The Inclinometer: Checking for Level Ground
- The Compass: Navigation with Gimbals
- 9
The Science of Sight: Optics and Light
- The Camera Obscura: Drawing with Light
- Lens Grinding: The Search for Magnification
- The Projection Box: Early Stage Lighting
- 10
The Anatomy of Design: Why It Works
- Biomimicry: Copying Nature's Blueprints
- The Power-to-Weight Ratio: The Great Hurdle
- Friction: The Enemy of the Renaissance
- The Limits of 15th Century Materials
- Mirror Writing: Protecting the Ideas
- The Legacy of the Codex: From Sketch to Reality
10 sections · 43 units · 215 levels. Built to play, not to enroll.
You pick the voice
Leonardo's Machines: The Complete Masterclass is taught in the The Professor style: clear, structured, thorough. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.
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