commit 9e714fd87ca84cf14ed2a1691a0d381e361d81cc
Author: KangHayoon <5843rkdgkdbs@gmail.com>
Date:   Tue Jun 29 16:13:26 2021 +0900

    Arduino OSS code

diff --git a/sketch_jun29a.ino b/sketch_jun29a.ino
new file mode 100644
index 0000000..bcc4e56
--- /dev/null
+++ b/sketch_jun29a.ino
@@ -0,0 +1,101 @@
+#include <Stepper.h>
+
+#define STEPS 4096    // 한바퀴를 이루는 스텝 갯수 입력
+
+Stepper stepper(STEPS, 4, 5, 6, 7);  // 고정자 권선 순서 설정
+
+ 
+
+int dust_sensor = A0;
+
+ 
+
+float dust_value=0;
+
+float dustDensityug=0;
+
+ 
+
+int sensor_led =12;
+
+int sampling=280;
+
+ 
+
+int waiting =40;
+
+float stop_time=9680;
+
+ 
+
+void setup(){
+
+  Serial.begin(9600);
+
+  pinMode(sensor_led,OUTPUT);
+
+  pinMode(4,OUTPUT);
+
+ 
+
+  stepper.setSpeed(6); // 회전 속도 지정
+
+}
+
+ 
+
+void loop(){
+
+  digitalWrite(sensor_led, LOW);
+
+  delayMicroseconds(sampling);
+
+ 
+
+  dust_value=analogRead(dust_sensor);
+
+ 
+
+  delayMicroseconds(waiting);
+
+ 
+
+  digitalWrite(sensor_led, HIGH);
+
+  delayMicroseconds(stop_time);
+
+ 
+
+  dustDensityug =(0.17*(dust_value*(5.0/1024))-0.1)*1000;
+
+ 
+
+  Serial.print("Dust Density [ug/m3]: ");
+
+ 
+
+  if(dustDensityug <=75.0){
+
+    stepper.step(STEPS); // 정방향 회전
+
+  delay(1000);
+
+  
+
+  }else if (80.0 < dustDensityug && dustDensityug <=150.0){
+
+    stepper.step(-STEPS); // 역방향 회전
+
+  delay(1000);
+
+  
+
+  }
+
+  
+
+  delay(2000);
+
+  
+
+}