.. __about_this_kit:

About_this_kit
====================

Preface
-------------------------------

This is a modular Micro:bit smart car designed for maker education, supporting MakeCode programming and meeting the learning needs of all stages from beginner to competition.

.. figure:: ./Tutorial/img/小车主图.jpg
   :align: center
   :width: 70%

The hardware interfaces :   
-------------------------------

.. figure:: ./Tutorial/img/顶层.png
   :align: center
   :width: 90%

.. figure:: ./Tutorial/img/底层.png
   :align: center
   :width: 90%

Product Parameters :
-------------------------------
Please follow the following safety precautions when using or storing this product:

1. Power supply voltage: 3.5V~5V DC (3 AAA dry cell batteries or 3.6V~3.7V lithium battery)
2. Infrared line-following sensor (high and low levels) ×2
3. Buzzer x1
4. Infrared receiver (NEC encoding) ×1
5. RGB spotlights x2
6. WS2812 (RGB Ambient Light) ×4
7. HC-SR04 Ultrasonic Interface (5V) × 1
8. I2C interface (5V) ×1
9. Servo-specific interfaces ×3 (S1 S2 S3)
10. P0 P1 P2 Expansion Interface
11. N20 metal geared motor ×2
12. Maximum motor speed: 300 rpm
13. Motor drive method: PWM motor drive
14. Bracket and protective cover with extended M3 screw holes × 6
15. Programming method: makecode


Componen List
-------------------------------

.. list-table:: Componen List
   :header-rows: 1
   :widths: 10 40

   * - Qty
     - Item
   * - x1
     - PCBA Car Chassis (excluding motherboard)
   * - x1
     - fixed caster
   * - x2
     - Vehicle wheel
   * - x2
     - Cross axle
   * - x1
     - Triple AAA battery box
   * - x1
     - HC-SR04 ultrasonic module
   * - x1
     - Metal shovel
   * - x1
     - Servo mounting plate
   * - x1
     - SG90 servo bag
   * - x1
     - Metal bearing
   * - x1
     - Screw Pack
   * - x1
     - Patrol Route Map


.. tip:: Micro:Bit motherboard and battery need to be prepared by yourself.

.. image:: /Tutorial/img/组件清单.jpg


Screw package list
-------------------------------

.. image:: /Tutorial/img/螺丝.jpg

DEMO Video
-------------------------------

Car effect demonstration:

.. raw:: html
   
   <iframe width="674" height="379" src="https://www.youtube.com/embed/eTImQBHJAHw" title="LAFVIN MicroBit Smart Car" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>