diff --git a/SampleSrc/accel02.ino b/SampleSrc/accel02.ino
new file mode 100644
index 0000000..e1eef66
--- /dev/null
+++ b/SampleSrc/accel02.ino
@@ -0,0 +1,82 @@
+/** 
+ * FFTで周波数特性
+ * https://101010.fun/iot/m5stickc-plus-accel.html
+ * を改変
+ */
+
+#include <M5StickCPlus.h>
+#include "arduinoFFT.h"
+
+#define SAMPLE_PERIOD 10    // サンプリング間隔(mS)
+
+const uint16_t FFTsamples = 64; //This value MUST ALWAYS be a power of 2
+double vReal[FFTsamples];
+double vImag[FFTsamples];
+const double samplingFrequency = 1000.0 / (double)SAMPLE_PERIOD;
+arduinoFFT FFT = arduinoFFT(vReal, vImag, FFTsamples, samplingFrequency);
+
+int Y0 = 15;
+int _height = 135 - Y0;
+int _width = 240;
+float dmax = 1000.0; // Sensitive
+
+void drawChart(int nsamples) {
+    int band_width = floor(_width / nsamples);
+    int band_pad = band_width - 1;
+
+    for (int band = 0; band < nsamples; band++) {
+        int hpos = band * band_width;
+        float d = vReal[band];
+        if (d > dmax) d = dmax;
+        int h = (int)((d / dmax) * (_height) * 0.9);
+        M5.Lcd.fillRect(hpos, _height - h, band_pad, h, BLACK);
+        if ((band % 16) == 0) {
+            M5.Lcd.setCursor(hpos, _height);
+            M5.Lcd.printf("%dHz", (int)((band * 1.0 * samplingFrequency) / FFTsamples));
+        }
+    }
+}
+
+void setup() {
+  M5.begin();
+//   M5.Axp.ScreenBreath(24);
+  M5.Lcd.setRotation(3);
+  M5.Lcd.fillScreen(WHITE);
+  M5.Lcd.setTextColor(BLACK);
+  M5.Lcd.setTextSize(2);
+  M5.IMU.Init();
+  M5.IMU.SetAccelFsr(M5.IMU.AFS_4G);
+}
+
+void DCRemoval(double *vData, uint16_t samples) {
+    double mean = 0;
+    for (uint16_t i = 0; i < samples; i++) {
+        mean += vData[i];
+    }
+    mean /= samples;
+    for (uint16_t i = 0; i < samples; i++) {
+        vData[i] -= mean;
+    }
+}
+
+void loop() {
+  for (int i = 0; i < FFTsamples; i++) {
+    float ax, ay, az;
+    long t = micros();
+    M5.IMU.getAccelData(&ax,&ay,&az);  // MPU6886から加速度を取得
+    vReal[i] = ay * 1000;  // mGに変換
+    vImag[i] = 0;
+    delayMicroseconds(SAMPLE_PERIOD * 1000 - (micros() - t));
+  }
+
+  DCRemoval(vReal, FFTsamples);  // 直流分を除去
+  FFT.Windowing(FFT_WIN_TYP_HAMMING, FFT_FORWARD);  // 窓関数
+  FFT.Compute(FFT_FORWARD); // FFT処理(複素数で計算)
+  FFT.ComplexToMagnitude(); // 複素数を実数に変換
+  double x = FFT.MajorPeak();
+
+  M5.Lcd.fillScreen(WHITE);  // 画面をクリア
+  drawChart(FFTsamples / 2);
+  M5.Lcd.setCursor(40, 0);
+  M5.Lcd.printf("Peak: %3.1fHz", x);
+}
\ No newline at end of file
diff --git a/setup.sh b/setup.sh
index 44a1e21..8d1fdef 100755
--- a/setup.sh
+++ b/setup.sh
@@ -1,8 +1,8 @@
 #!/bin/bash
 
 # commented commands were not necessary for 1st setup, but necessary for future updates/upgrades
-#arduino-cli update
-#arduino-cli upgrade
+arduino-cli update
+arduino-cli upgrade
 
 # arduino-cli core update-index --additional-urls https://dl.espressif.com/dl/package_esp32_index.json
 arduino-cli core update-index --config-file arduino-cli.yaml
@@ -23,6 +23,7 @@
 arduino-cli lib install ArduinoJson
 #arduino-cli lib install WiFiMulti_Generic
 arduino-cli lib install "Adafruit SHT31 Library"
+# arduino-cli lib install M5Unified M5StickCPlus2
 
 ## You can find other libraries as follows.
 # arduino-cli lib search [keyword]