diff --git a/docs/assets/img/product_pics/base/btc_01.png b/docs/assets/img/product_pics/base/btc_01.png
new file mode 100644
index 00000000..f1a19940
Binary files /dev/null and b/docs/assets/img/product_pics/base/btc_01.png differ
diff --git a/docs/index.md b/docs/index.md
index a50c55e1..bf541650 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -52,7 +52,7 @@
-[](en/base/lan_base) [](en/base/node_base) [](en/base/btc_base)
+[](en/base/lan_base) [](en/base/node_base) [](en/base/btc_base)
diff --git a/docs/ja/module/btc.md b/docs/ja/module/btc.md
index 1959ecf4..07519349 100644
--- a/docs/ja/module/btc.md
+++ b/docs/ja/module/btc.md
@@ -6,7 +6,10 @@
***
-:memo:**[概要](#概要)** :octocat:**[サンプルコード](#サンプルコード)** :electric_plug:**[回路図](#回路図)** 🛒**[購入リンク](https://www.aliexpress.com/store/product/M5Stack-Official-Stock-Offer-GPS-Module-with-Internal-External-Antenna-MCX-Interface-IoT-Development-Board-for/3226069_32840757048.html?spm=2114.12010615.8148356.2.7c6c2743BZthY3)**
+:memo:**[概要](#概要)** :octocat:**[サンプルコード](#サンプルコード)** 🛒**[購入リンク](https://www.aliexpress.com/store/product/M5Stack-Official-Stock-Offer-GPS-Module-with-Internal-External-Antenna-MCX-Interface-IoT-Development-Board-for/3226069_32840757048.html?spm=2114.12010615.8148356.2.7c6c2743BZthY3)**
+
+
+
## 概要
@@ -44,23 +47,32 @@
- [サンプルコード](https://github.com/m5stack/M5Stack/tree/master/examples/Modules/DHT12) (for DHT12)
-
- 
-
-
- 
-
-
- 
-
-
- 
-
-
- 
-
+## サンプルコード
-## 関連情報
+```arduino
+#include
+#include "DHT12.h"
+#include //The DHT12 uses I2C comunication.
-- [BTC モジュール 購入(スイッチサイエンス)](https://www.switch-science.com/catalog/3993/)
-- [BTC モジュール 購入(AliExpress)](https://www.aliexpress.com/store/product/M5Stack-btc-DHT12-ESP32-micropython-bitcoin/3226069_32852302770.html)
\ No newline at end of file
+void setup() {
+ M5.begin();
+ Wire.begin();
+ M5.Lcd.setBrightness(10);
+ Serial.println(F("ENV Unit(DHT12 and BMP280) test..."));
+}
+
+void loop() {
+ float tmp = dht12.readTemperature();
+ float hum = dht12.readHumidity();
+ Serial.printf("Temperatura: %2.2f*C Humedad: %0.2f%%\r\n", tmp, hum);
+
+ M5.Lcd.setCursor(0, 0);
+ M5.Lcd.setTextColor(WHITE, BLACK);
+ M5.Lcd.setTextSize(3);
+ M5.Lcd.printf("Temp: %2.1f \r\nHumi: %2.0f%% \r\n", tmp, hum);
+
+ delay(100);
+}
+```
+
+特定の `BTC.ino`, click [here](https://github.com/m5stack/M5-ProductExampleCodes/tree/master/Base/BTC/Arduino) please.
\ No newline at end of file
diff --git a/docs/zh_CN/README.md b/docs/zh_CN/README.md
index 5cdd44df..be952f34 100644
--- a/docs/zh_CN/README.md
+++ b/docs/zh_CN/README.md
@@ -46,7 +46,7 @@
-[](zh_CN/base/lan_base) [](zh_CN/base/node_base) [](zh_CN/base/btc_base)
+[](zh_CN/base/lan_base) [](zh_CN/base/node_base) [](zh_CN/base/btc_base)