STEM Education

Webcam Movement Analysis (on the table)

Webcam Movement Analysis (on the table)

Try pushing an imaginary ball placed on the table with your finger. If your PC doesn’t have a camera, it won’t work. When the web browser asks for access to the camera, please allow it. (Personal … more

Bubble Pop! - Javalab ml5 project

Bubble Pop

Try popping the falling drops with your hands. If your PC doesn’t have a camera, it won’t work. When the web browser asks for access to the camera, please allow it. (Personal data never stored on … more

Potentiometer

Potentiometer

Potentiometer The potentiometer is an electronic component that allows you to adjust the resistance value freely. The potentiometer is used to adjust the volume of sound in audio equipment and so on.   How is the … more

Micro:bit Ultrasonic Distance sensor (HC-SR04P)

Micro:bit Ultrasonic Rangefinder

Ultrasonic rangefinder This sensor measures distance using the return time after ultrasonic waves are emitted. Please use the HC-SR04P (or HC-SR04+) sensor for 3V and 5V. Please note that 5V-only HC-SR04 will not operate. Connect the … more

Gear Simulation

Gear

Gear In general gears, the direction of rotation is reversed each time it is bitten. By adjusting the radius ratio of the gear, you can adjust the rotational angular speed and torque. When power is transmitted … more

마퀸

Micro:bit Maqueen robot code collection

Evasive maneuver (using distance sensor) Marqueen avoids walls or obstacles it encounters during its progress(< 20 cm). Source code https://makecode.microbit.org/#pub:75200-46487-20442-48437 Line tracker Line tracker – source code https://makecode.microbit.org/#pub:25457-13297-31811-64902 Black barrier Black barrier – source code https://makecode.microbit.org/#pub:28206-29997-02800-36929 ... more

Microbit Wireless Maze

Micro:bit Wireless Maze

This is a game using the micro:bit’s 3-axis acceleration sensor. Updated 2023.10.27: Score recording function added. Parts list Click here to view the parts list.

Javalab

What is Javalab?

Free interactive science simulation(Virtual lab) written by JavaScript Simulates various natural phenomena Includes about Physics, Chemistry, Earth, Astronomy, Biology, Measurment, Mathmatics… No need to plugin add-ons Available on mobile devices and tablets also Free of charge … more

All the Colors of the World

All the Colors of the Universe (Color Cube)

The three primary colors of light are red, green, and blue. Depending on how these three lights are mixed, different composite colors appear. For better understanding, let’s imagine a three-dimensional coordinate system with the x, y, … more

Hypocycloid

Hypocycloid

A hypocycloid is a special plane curve generated by the trace of a fixed point on a small circle that rolls within a larger circle. If the radius of a large circle is \(R\), and the … more

Hypocycloid

Hypocycloid drawing tool

This is a tool that draws a hypocycloid figure made on a 3D printer. For a description of the hypocycloid, see here(link). 3D print data The gear ratios are 24 for the external gear and 17, … more