diff --git a/examples/ext_dev/sensors/thermography_mlx90640/mlx90640_example.py b/examples/ext_dev/sensors/thermography_mlx90640/mlx90640_example.py
index 65ed0ada..a8d0140b 100644
--- a/examples/ext_dev/sensors/thermography_mlx90640/mlx90640_example.py
+++ b/examples/ext_dev/sensors/thermography_mlx90640/mlx90640_example.py
@@ -1,9 +1,20 @@
 from maix import display, app, time, ext_dev
+import os
 
 disp = display.Display()
 
+I2C_BUS_NUM = 5
+
+if I2C_BUS_NUM == 5:
+    ### 使用I2C5，尝试加载外设驱动。如果外设驱动已存在会有错误提示，忽略即可。
+    ### Using I2C5, try to load the peripheral driver.
+    ### If the peripheral driver already exists there will be an error message, just ignore it.
+    os.system("insmod /mnt/system/ko/i2c-algo-bit.ko")
+    os.system("insmod /mnt/system/ko/i2c-gpio.ko")
+
+
 mlx = ext_dev.mlx90640.MLX90640Celsius(
-    5,
+    I2C_BUS_NUM,
     ext_dev.mlx90640.FPS.FPS_32,
     ext_dev.cmap.Cmap.WHITE_HOT,
     5, 50, 0.95)