看到jxs做的那个遥控密码引爆装置，觉得深受启发，尤其是那个蜂鸣器。让我想起了从前玩CS的时代。正好最近做实验需要安全的起爆方式，所以就用现有的模块编写了个Arduino程序来定时控制继电器。为了追求更好的效果，做出了类似于CS中C4那个嘀嘀声和灯闪逐渐变快最后引爆的效果。（注：仅继电器模拟，并未连接和谐物演示）

从左至右为1234继电器，小灯也分别对应。假想123控制和谐物，4为倒计时指示，用继电器开合产生的哒哒声代替蜂鸣器。
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Arduino源代码

int _ABVAR_1_;
int _ABVAR_2_;
int _ABVAR_3_;
int _ABVAR_4_;

void setup()
{
pinMode( 8 , OUTPUT);
pinMode( 7 , OUTPUT);
pinMode( 6 , OUTPUT);
pinMode( 5 , OUTPUT);
}

void loop()
{
digitalWrite( 5 , HIGH );
digitalWrite( 6 , HIGH );
digitalWrite( 7 , HIGH );
digitalWrite( 8 , HIGH );
for (_ABVAR_1_=0; _ABVAR_1_< ( 20 ); ++_ABVAR_1_ )
{
delay( 900 );
digitalWrite( 8 , LOW );
delay( 100 );
digitalWrite( 8 , HIGH );
}

for (_ABVAR_2_=0; _ABVAR_2_< ( 20 ); ++_ABVAR_2_ )
{
delay( 400 );
digitalWrite( 8 , LOW );
delay( 100 );
digitalWrite( 8 , HIGH );
}

for (_ABVAR_3_=0; _ABVAR_3_< (12 ); ++_ABVAR_3_ )
{
delay( 150 );
digitalWrite( 8 , LOW );
delay( 100 );
digitalWrite( 8 , HIGH );
}
for (_ABVAR_3_=0; _ABVAR_3_< (10 ); ++_ABVAR_3_ )
{
delay( 100 );
digitalWrite( 8 , LOW );
delay( 100 );
digitalWrite( 8 , HIGH );
}
digitalWrite( 5 , LOW );
digitalWrite( 8 , LOW );
digitalWrite( 7 , LOW );
digitalWrite( 6 , LOW );
delay( 1000 );
digitalWrite( 6 , HIGH );
digitalWrite( 5 , HIGH );
digitalWrite( 7 , HIGH );
digitalWrite( 8 , HIGH );
delay( 250 );
digitalWrite( 5 , LOW );
delay( 250 );
digitalWrite( 6 , LOW );
delay( 250 );
digitalWrite( 7 , LOW );
delay( 250 );
digitalWrite( 8 , LOW );
delay( 250 );
digitalWrite( 5 , HIGH );
delay( 250 );
digitalWrite( 6 , HIGH );
delay( 250 );
digitalWrite( 7 , HIGH );
delay( 250 );
digitalWrite( 8 , HIGH );
}