diff --git a/README.md b/README.md
index 5fcbf71..6c5867d 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,9 @@ _ESP32-S3 Module embeded on Arduino Uno board_
 import esp, esp32, time, os, _thread
 from machine import Pin, SoftI2C, I2C
 
+# An infinite loop thread to blink LED
 def status_led():
+    # Blink pattern short-short-long
     while True:
         led.value(1)
         time.sleep_ms(250)