Case 04 Ball Launching Vehicle
Purpose
To create a ball launcher with blocks with the Cutebot Pro.
Material Requires
ELECFREAKS micro:bit Joystick:bit V2 Kit
Assembly Steps
Hardware Connection
Connect the servo to the S1 port of the Smart Cutebot Pro.
Software
Programming
Click Advanced in MakeCode's code drawer to see more options.
In order to programme Smart Cutebot Pro, we need to add an extension library. Find Extensions at the bottom of the code drawer and click on it. This will bring up a dialogue box to search for CutebotPro and click to download this code library.
In order to programme the joystick:bit V2, we need to add an extension library. Find Extensions at the bottom of the code drawer and click on it. This will bring up a dialogue box to search for joystickbit and click on Download this codebase.
Code Example
Joystick
Reference
Link: https://makecode.microbit.org/_DHyiYdULjKg0
You can also download the links directly:
Cutebot Pro
Reference
Link: https://makecode.microbit.org/_dfmJjPJ1yMqp
You can also download the links directly:
Result
Use the joystick to control the route, and press the button C to control the car's transmitter to launch small balls.
Expanded knowledge
History and development of stone-throwing devices
A stone-throwing device is an ancient siege tool used to throw large stones, projectiles, or other offensive objects. The following is an overview of the history and development of stone-throwing devices:
Ancient stone throwing devices: Ancient civilisations around the world used stone-throwing devices. Among the earliest stone-throwing devices date back to the Assyrian Empire in the 9th century BC. Assyrian armies used crossbow-shaped projectiles, called "bellows," to attack cities and besiege enemies. During the Greek and Roman periods, more sophisticated stone-throwing machines were invented, such as the famous stone-throwing machines "cuirasses" and "crossbow-shaped stone-throwing machines".
Medieval stone-throwing devices: During the Middle Ages, stone-throwing devices were widely used in European warfare. The most famous of these was the Trebuchet, a huge mechanical device that used the counter weighing principle to throw huge stones. Trebuchet became one of the most powerful and effective stone-throwing devices in medieval siege warfare.
Modern stone-throwing devices: With the invention of gunpowder and advances in artillery shell technology, stone-throwing devices were gradually replaced by artillery. However, the concept and principles of stone-throwing devices still exist and are used in some special situations. For example, stone-throwing devices are used in modern military manoeuvres to simulate ancient war scenarios in order to enhance the realism of historical re-enactments.
Modern Applications: Although stone-throwing devices are no longer widely used in the military, they are still used in other areas. For example, some athletic competitions use small stone-throwing devices to test the accuracy and range of stone-throwing. In addition, the principles of stone-throwing devices also provide reference and inspiration for modern catapulting devices and engineering machinery.
Overall, the stone-throwing device is an important siege weapon in human history, representing the development of ancient technology and warfare techniques. Although it has been eliminated in modern warfare, the stone-throwing device still has its unique value in the fields of historical research, cultural activities and athletic competitions.