Arduinoのクラス作成の方法を教えていただきたいです

Arduinoでのクラス作成

・質問の内容
Arduinoでクラスを作成して、LEDアレイを用いた演出に使うコードを組んでいたのですが、以下のエラーメッセージが発生しました。
有識者の方教えていただきたいです。

発生している問題・エラーメッセージ

base.h:9:5:warning: extra qualification 'Kikn::' on member 'Kikn' [-fpermissive]
     Kikn::Kikn(int _colorcode[])

base.h:12:3:error: 'Serial' was not declared in this scope
   Serial.begin( 9600 );

base.h:19:18: error: 'OUTPUT' was not declared in this scope
     pinMode(pin, OUTPUT);
base.h:19:5: error: 'pinMode' was not declared in this scope
     pinMode(pin, OUTPUT);
base.h:20:23: error: 'LOW' was not declared in this scope
     digitalWrite(pin, LOW);
base.h:20:5: error: 'digitalWrite' was not declared in this scope
     digitalWrite(pin, LOW);
base.h:28:11: error: 'A3' was not declared in this scope
   pinMode(A3, OUTPUT);
base.h:28:15: error: 'OUTPUT' was not declared in this scope
   pinMode(A3, OUTPUT);
base.h:28:3: error: 'pinMode' was not declared in this scope
   pinMode(A3, OUTPUT);
base.h:30:11: error: 'A4' was not declared in this scope
   pinMode(A4, OUTPUT);
base.h:32:11: error: 'A5' was not declared in this scope
   pinMode(A5, OUTPUT);

base.cpp:5:7: error: 'Serial' was not declared in this scope
   if (Serial.available() > 0)

base.cpp:12:22: error: 'random' was not declared in this scope
       pindata = (int)random(2, 12);
base.cpp:15:36: error: expected primary-expression before ')' token
   for (int rgb = 0; rgb < 3; rgb + )
base.cpp:20:48: error: 'LOW' was not declared in this scope
       if (cPin == rgb) digitalWrite(cPin + 17, LOW);
base.cpp:20:24: error: 'digitalWrite' was not declared in this scope
       if (cPin == rgb) digitalWrite(cPin + 17, LOW);
base.cpp:20:24: error: 'digitalWrite' was not declared in this scope
       if (cPin == rgb) digitalWrite(cPin + 17, LOW);
base.cpp:22:36: error: 'HIGH' was not declared in this scope
       else digitalWrite(cPin + 17, HIGH);
base.cpp:22:12: error: 'digitalWrite' was not declared in this scope
       else digitalWrite(cPin + 17, HIGH);
base.cpp:26:17: error: 'pindata' was not declared in this scope
   digitalWrite( pindata, HIGH );
base.cpp:26:26: error: 'HIGH' was not declared in this scope
   digitalWrite( pindata, HIGH );
base.cpp:26:3: error: 'digitalWrite' was not declared in this scope
   digitalWrite( pindata, HIGH );
base.cpp:28:3: error: 'delay' was not declared in this scope
   delay(5);
base.cpp:28:3: note: suggested alternative: 'display'
   delay(5);
base.h:9:5: warning: extra qualification 'Kikn::' on member 'Kikn' [-fpermissive]
     Kikn::Kikn(int _colorcode[])
last_mission:9:17: error: expected primary-expression before ']' token
 Kikn kikn(color[]) = new Kikn;
last_mission:9:20: error: expected ',' or ';' before '=' token
 Kikn kikn(color[]) = new Kikn;

exit status 1
'Serial' was not declared in this scope

該当のソースコード

Arduino
<lastmission.ino>
#include "Arduino.h"
#include "base.h"

int color[] = {1, 1, 1, 1, 1, 1, 1, 1, 1, 1};

Kikn kikn(color[]) = new Kikn;


void setup() {
  
}

void loop() {
  kikn.display();
}
<base.cpp>
#include "base.h"

void Kikn::display(void)
{
  if (Serial.available() > 0)
  {
    int pindata = Serial.read();
    //数値データを読み込む
    pindata = pindata % 12;
    if (pindata == 0 || pindata == 1)
    {
      pindata = (int)random(2, 12);
    }
  }
  for (int rgb = 0; rgb < 3; rgb + )
  {
    for (int cPin = 0; cPin < 3; cPin++)
    {
      //カソードの出力状況
      if (cPin == rgb) digitalWrite(cPin + 17, LOW);
      //光る１つの条件クリア
      else digitalWrite(cPin + 17, HIGH);
    }
  }

  digitalWrite( pindata, HIGH );
  //アノードの出力状態・光る２つ目の条件クリア
  delay(5);
}

<base.h>
#ifndef base_h
#define base_h
class Kikn
{
  public:
    void display();
  private:
    int colorcode[10];
    Kikn::Kikn(int _colorcode[])
    //インスタンス化(1度だけ通す)
{
  Serial.begin( 9600 );
  for (int x = 0; x < 10; x++)
  {
    colorcode[x] = _colorcode[x];
  }
  for (int pin = 2; pin <= 11; pin++)
  {
    pinMode(pin, OUTPUT);
    digitalWrite(pin, LOW);
    //アノード初期化
  }
  /*
    以下３行で出力ピンを設定※アナログピンをデジタルとして使用
    A3=17,A4=18,A5=19として設定することも可能
    カソード
  */
  pinMode(A3, OUTPUT); 
  //赤・17
  pinMode(A4, OUTPUT); 
  //青・18
  pinMode(A5, OUTPUT); 
  //緑・19
}

/*
   1または10番ピンをGND、11~20番ピンに電圧を印加すると赤色に光ります。
  また、同様に2または9番ピンをGNDで青色、3または8番ピンをGNDで緑色に光ります。
*/

};
#endif
//piblicが終わった後にセミコロンをつける