diff --git a/firmware/NeoPixelController.cpp b/firmware/NeoPixelController.cpp
index b67c73a..5624ebb 100644
--- a/firmware/NeoPixelController.cpp
+++ b/firmware/NeoPixelController.cpp
@@ -3,7 +3,6 @@
 #include <Adafruit_NeoPixel.h>
 
 namespace {
-constexpr uint8_t kPin = 18;
 constexpr uint16_t kCount = 1;
 constexpr uint32_t kColors[] = {
   0xFF0000, 0xFF8000, 0xFFFF00, 0x00FF00,
@@ -11,10 +10,11 @@ constexpr uint32_t kColors[] = {
 };
 constexpr uint8_t kColorCount = sizeof(kColors) / sizeof(kColors[0]);
 
-Adafruit_NeoPixel pixels(kCount, kPin, NEO_GRB + NEO_KHZ800);
+Adafruit_NeoPixel pixels(kCount, 0, NEO_GRB + NEO_KHZ800);
 }
 
-void NeoPixelController::begin() {
+void NeoPixelController::begin(uint8_t pin) {
+  pixels.setPin(pin);
   pixels.begin();
   pixels.setBrightness(255);
   pixels.setPixelColor(0, kColors[kStoppedColorIndex]);
diff --git a/firmware/NeoPixelController.h b/firmware/NeoPixelController.h
index d9004f4..f091f81 100644
--- a/firmware/NeoPixelController.h
+++ b/firmware/NeoPixelController.h
@@ -4,7 +4,7 @@
 
 class NeoPixelController {
 public:
-  void begin();
+  void begin(uint8_t pin);
   void setPlaying(bool playing);
   void update();
 
diff --git a/firmware/firmware.ino b/firmware/firmware.ino
index d7f224f..b311f48 100644
--- a/firmware/firmware.ino
+++ b/firmware/firmware.ino
@@ -3,6 +3,8 @@
 #include <U8g2lib.h>
 #include "NeoPixelController.h"
 
+const char kBluetoothName[] = "BT_Speaker5.31";
+
 // I2C接続のOLED設定 (SSD1306 128x64)
 U8G2_SSD1306_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);
 
@@ -83,7 +85,7 @@ void audio_state_changed_callback(esp_a2d_audio_state_t state, void *) {
 void setup() {
   Serial.begin(115200);
 
-  neoPixelController.begin();
+  neoPixelController.begin(18);
 
   // SDAをGPIO 19、SCLをGPIO 32 に設定
   // （配線に合わせて Wire.begin(SDA_PIN, SCL_PIN) の順で指定します）
@@ -96,7 +98,7 @@ void setup() {
   // 初期画面
   u8g2.clearBuffer();
   u8g2.setFont(u8g2_font_unifont_t_japanese1);
-  u8g2.drawUTF8(0, 20, "BTスピーカー5.3");
+  u8g2.drawUTF8(0, 20, kBluetoothName);
   u8g2.setFont(u8g2_font_6x10_tf);
   u8g2.drawStr(0, 40, "Ready...");
   u8g2.sendBuffer();
@@ -117,7 +119,7 @@ void setup() {
   a2dp_sink.set_on_audio_state_changed(audio_state_changed_callback);
 
   // Bluetooth起動
-  a2dp_sink.start("BT_Speaker5.3");
+  a2dp_sink.start(kBluetoothName);
 }
 
 void loop() {