commit 09e868155fa6cda9a2e6c9495889101fa78afaba
Author: seo <seo@chaegeon.com>
Date:   Sun Jun 7 01:08:17 2026 +0900

    Initial project import

diff --git a/Project_E_MS-7C51.ino b/Project_E_MS-7C51.ino
new file mode 100644
index 0000000..99755aa
--- /dev/null
+++ b/Project_E_MS-7C51.ino
@@ -0,0 +1,116 @@
+#include <avr/wdt.h>
+
+#define hddledsensor 4 // HDD 상태 체크 (보라)
+#define psensor 5 // 전원 상태 체크 (검정)
+#define pled 6 // 전원 상태 led (green) (초록)
+#define msw 7 // 다기능 버튼 감지 (노랑)
+#define psw 8 // 전원 버튼 감지 (흰색)
+#define powersupplyrelay 9 // 파워서플라이 온 릴레이 (검정(흰색 쌍))
+#define statusled 10 // 입력 상태 led (red) (초록)
+#define fanrelay 11 // 케이스 팬 릴레이 (보라(초록 쌍))
+#define powerinput 12 // 전원 쇼트 릴레이 (회색)
+
+int buttonflag, buttonflag_old, shutdownflag, powerflag;
+boolean coolingflag, backlightflag, serialflag = 0;
+
+void setup() {
+  Serial.begin(9600);
+  pinMode(LED_BUILTIN, OUTPUT);
+  digitalWrite(LED_BUILTIN, 0);
+  pinMode(psensor, INPUT_PULLUP);
+  pinMode(hddledsensor, INPUT_PULLUP);
+  pinMode(powerinput, OUTPUT);
+  pinMode(powersupplyrelay, OUTPUT);
+  pinMode(psw, OUTPUT);
+  pinMode(msw, OUTPUT);
+  pinMode(pled, OUTPUT);
+  pinMode(statusled, OUTPUT);
+  pinMode(fanrelay, OUTPUT);
+  wdt_enable(WDTO_8S);
+}
+
+void loop() {
+  wdt_reset();
+  button();
+  powercontrol();
+}
+
+void powercontrol() {
+  if (powerflag == 0) { // 전원 켜짐 플래그가 0 일때
+    if (buttonflag >= 1) { //  버튼 플래그가 1 이상 때
+      buttonflag = 0;
+      powerflag = 1;
+      poweron();
+    }
+  } else if (powerflag == 1) {
+    if (buttonflag >= 1 && buttonflag <= 2) { // 오작동 값 청소
+      buttonflag = 0;
+    } else if (buttonflag >= 3 && buttonflag <= 5) { // 문제 있는 부팅
+      buttonflag = 0;
+      powerrestart();
+    } else if (buttonflag >= 6 && buttonflag <= 10) { // 강제종료
+      buttonflag = 0;
+      powerflag = 0;
+      focus_poweroff();
+    } else if (buttonflag >= 11) { // 오작동 값 청소
+      buttonflag = 0;
+    }
+    if (digitalRead(psensor) == 0) { // 시스템이 종료 상태로 감지 되었을때
+      shutdownflag = 0;
+      powerflag = 0;
+      poweroff();
+    }
+  }
+}
+
+void button() {
+  while (digitalRead(msw) == 0 && digitalRead(psw) == 1) { // 전원 버튼 감지 시
+    buttonflag++;
+    delay(200);
+    if (buttonflag != buttonflag_old) {
+      buttonflag_old = buttonflag;
+      digitalWrite(statusled, 1);
+      delay(50);
+      digitalWrite(statusled, 0);
+      delay(750);
+    }
+  }
+}
+
+void poweron() {
+  digitalWrite(powersupplyrelay, 1);
+  while (digitalRead(psensor) == 0) {
+    digitalWrite(powerinput, 1);
+    delay(100);
+    digitalWrite(powerinput, 0);
+    delay(400);
+  }
+  digitalWrite(powerinput, 0);
+  digitalWrite(fanrelay, 1);
+  digitalWrite(pled, 1);
+}
+
+void poweroff() {
+  digitalWrite(powersupplyrelay, 0);
+  digitalWrite(fanrelay, 0);
+  digitalWrite(pled, 0);
+}
+
+void focus_poweroff() {
+  while (digitalRead(psensor) == 0) {
+    digitalWrite(powerinput, 1);
+    delay(300);
+    digitalWrite(powerinput, 0);
+    delay(700);
+  }
+  digitalWrite(powerinput, 0);
+  digitalWrite(powersupplyrelay, 0);
+  digitalWrite(fanrelay, 0);
+  digitalWrite(pled, 0);
+}
+
+void powerrestart() {
+  focus_poweroff();
+  delay(500);
+  poweron();
+}
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..9c68567
--- /dev/null
+++ b/README.md
@@ -0,0 +1,22 @@
+# Project_E_MS-7C51
+
+## Overview
+
+- Type: Arduino project
+- Source directory: `Project_E_MS-7C51`
+- Files: 1
+- Related classification: standalone project folder; no exact duplicate top-level project was found.
+
+## Arduino Sketches
+
+- `Project_E_MS-7C51.ino`
+
+## Root Files
+
+- `Project_E_MS-7C51.ino`
+
+## Notes
+
+- This repository is intended to be stored as a private project repository on `git.chaegeon.com`.
+- Sensitive configuration may exist in source files and is kept private by repository visibility.
+- Exact duplicate top-level project folders were checked before repository preparation.