From 74bbba51682fbae631196500f7a1e6a4ee59dadc Mon Sep 17 00:00:00 2001
From: Koichi Ito <koichii@live.jp>
Date: Tue, 22 Sep 2026 15:42:26 +0900
Subject: [PATCH] =?UTF-8?q?support=20=E9=96=8B=E7=99=BA=E3=83=9C=E3=83=BC?=
 =?UTF-8?q?=E3=83=89=20I2C(19,5)?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 firmware/firmware.ino | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/firmware/firmware.ino b/firmware/firmware.ino
index 5b0ba36..0ca1e35 100644
--- a/firmware/firmware.ino
+++ b/firmware/firmware.ino
@@ -211,8 +211,10 @@ void setup() {
   neoPixelController.begin(18);
 
   // I2Cの配線を設定します。Wire.begin(SDA, SCL)の順です。
-  Wire.begin(21, 22);
+  // Wire.begin(21, 22);
+  Wire.begin(19, 5); // SDA=19, SCL=5 開発用ボードの配線
   
+
   // OLEDを使える状態にします。
   u8g2.begin();
   u8g2.enableUTF8Print(); // UTF-8（日本語）描画を有効化