UD5 Toolkit
Subtractive Color Mixer (CMYK) – Online Paint Blending Preview
Mix cyan, magenta, yellow, and black virtually to see a predicted paint color. Better than RGB mixing.
Simulators & Virtual Labs
22+ toolsMiniature Contrast Painter – Online View Zenithal Highlight & Wash
Simulate zenithal priming and contrast/speed paints over a 3D bust. Understand light and shadow placement before you paint. Great for tabletop miniatures.
Bear Bag Hanging Simulator – Online PCT Method Practice
Step‑by‑step interactive animation for the PCT bear bag hanging method. Practice the throw and tie before you go.
Paper Fortune Teller Simulator – Online Click & Open Flat
Virtual paper fortune teller. Pick a color, count, and reveal a random fortune. Nostalgic fun.
Tesseract Rotation Simulator – Online 4D Cube Projection
A wireframe 3D projection of a rotating tesseract. Drag to rotate in 4D. Fascinating mathematical art.
Virtual Circular Slide Rule – Online E6B Style Calculator
Drag the virtual ring to perform multiplication, division, and unit conversions. Rediscover pre‑electronic calculator charm.
Canning Headspace Simulator – Online Visual Guide for Jar Fill
Select jar size and food type to see the correct headspace height visually. Avoid siphoning and seal failure.
Carrom Aim Trainer – Online Virtual Flick & Rebound Practice
Practice carrom shots on a virtual board. Visualize rebounds and plan your strike on the physical board.
Pitot‑Static Tube Simulator – Online Airspeed & Bernoulli Principle
Adjust speed and see how dynamic pressure changes. Visualize how a pitot tube measures airspeed. Aviation & physics demo.
Signal Mirror Practice Simulator – Virtual Aiming Flash
Learn to aim a signal mirror by aligning a virtual finger and target. Simulates the retro‑reflective mesh technique. Practice before you need it.
Projectile Motion Simulator – Online Launch Cannon
Adjust angle and initial speed to launch a projectile. See trajectory, range, max height. Interactive physics.
Simple Circuit Simulator – Online Visual Resistor LED
Drag a battery, resistor, LED onto a grid and simulate current flow. Show Ohm's law in action.
Coin Toss Probability Demonstrator – Online Long‑Run Simulator
Virtual flip coins thousands of times and see the heads/tails ratio converge to 50%. Interactive law of large numbers.
Exposure Triangle Simulator – Online ISO, Aperture, Shutter
Adjust ISO, f‑stop, shutter speed and see a simulated image brightness and depth of field effect. Learn manual mode.
Mohs Hardness Scale Simulator – Online Scratch Test Demo
Drag a virtual mineral across common items to understand scratch hardness. Interactive learning for jewelers.
Paper Snowflake Simulator - Online Fold & Cut Preview
Virtually fold a digital paper and cut out shapes to see a snowflake unfold. Experiment with designs before real scissors. Pure creative fun.
Colored Overlay Simulator – Online Tinted Reader
Apply a color tint overlay over text to see if it helps reading comfort. Trial for visual stress.
Telescope Field of View Simulator – Online Eyepiece & Object
Input telescope and eyepiece parameters to see a simulated view of the Moon or Andromeda. Plan observations.
Tarot Card Random Draw - Online Single & Three Card Spread
Draw a random tarot card (or three-card spread) with meanings. For entertainment and self-reflection. Fun mystical experience, no data tracking.
Magic 8-Ball Simulator - Online Ask and Shake
Ask a yes/no question and click to reveal a classic Magic 8-Ball response. Animated shake effect. Nostalgic fun, pure local randomness.
Visual Stress Pattern Checker – Online See Effect
Display striped patterns that can cause visual distortion. Learn about visual stress. Switch colors.
Barcode Scanner Simulator – Online Enter Number & Visualize
Type a UPC or EAN number and see how a laser scanner would identify it, plus check digit validation.