diff --git a/cds01.ino b/cds01.ino
new file mode 100644
index 0000000..4978a15
--- /dev/null
+++ b/cds01.ino
@@ -0,0 +1,60 @@
+#include <M5StickCPlus.h>
+#include <WiFi.h>
+#include <HTTPClient.h>
+
+const char* ssid = "miura2g";
+const char* password = "jikken2022";
+
+int PIN = 36;
+
+// +--- 15kΩ抵抗 --+-- CdSセル --+
+// |              |             |
+// GND           G26           3V3
+// https://www.storange.jp/2012/03/arduinocds.html
+
+// 注意点: https://lang-ship.com/reference/unofficial/M5StickC/Peripherals/ADC/
+int light = 0;
+void setup() {
+  M5.begin();
+  Serial.begin(115200);
+  pinMode(PIN, ANALOG); // PINのモード設定
+  // https://lang-ship.com/blog/work/m5stickc-io/
+
+  WiFi.begin(ssid, password);
+  while (WiFi.status() != WL_CONNECTED){
+    delay(50);
+    Serial.print(".");
+  }
+
+  delay(1000);
+}
+
+void loop() {
+  M5.Beep.update();
+  light = analogRead(PIN);
+  Serial.printf("%04d\n", light ); // 暗 0 〜 4095 明
+  if (light < 3000)
+  {
+    //digitalWrite(36, 1);
+    M5.Beep.tone(1000,500);
+    Serial.printf("HIGH \n");
+
+  }
+  
+  char* weatherapi_url = "https://script.google.com/macros/s/AKfycbzlbfiBTz_WOpS3Vb2quIos3nwVvgbyudq-gSI0-p9TRbWDe9XCXDb5pmBcjg-HH20qGA/exec?light=";
+  //char buf[weatherapi_url.length()+4];
+  char tmp[400];
+  snprintf(tmp, 256, "%s%d",weatherapi_url, light);
+  HTTPClient http;            // クライアント作成
+  http.begin(tmp); // HTTPでサーバに接続
+  int httpCode = http.GET();  // ステータスコードを取得
+  if (httpCode > 0) {
+      Serial.println(httpCode);
+    if (httpCode == HTTP_CODE_OK) { // ステータスコードが「成功」(200) なら
+      String payload = http.getString();
+      Serial.println(payload);
+    }
+  }
+  http.end();
+  delay(10000);
+}
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