updates

Author: tradercentric

I2C/main.py

@@ -1,5 +1,15 @@
-from machine import Pin, SoftI2C
 
+# Micropython version
+#
+# ESP Pin  --  GY39 Pin
+# ---------------------
+# 3.3v     --  VCC
+# GPIO_22  --  CT 
+# GPIO_21  --  DR
+# GND      --  GND    
+
+from machine import Pin, SoftI2C
+    
 MCU_I2C_ADDR = 0X5b
 
 i2c = SoftI2C(scl=Pin(22), sda=Pin(21))

README.md

@@ -2,7 +2,9 @@
 
 GY-39 MCU Light Intensity Temperature Humidity Atmospheric Pressure, 4 in One Integrated Sensor Module
 
-<img src="./hookup_diagram.jpg">
+1. Communication using UART
+
+<img src="./uart_hookup_diagram.jpg">
 
     # Micropython version
     # With My ESP32 board, UART0 and UART1 are not available
@@ -16,6 +18,19 @@ GY-39 MCU Light Intensity Temperature Humidity Atmospheric Pressure, 4 in One In
     # GPIO_17  --  DR
     # GND      --  GND
 
+1. Communication using I2C (S0 to GND)
+
+<img src="./i2c_hookup_diagram.jpg">
+
+    # Micropython version
+    #
+    # ESP Pin  --  GY39 Pin
+    # ---------------------
+    # 3.3v     --  VCC
+    # GPIO_22  --  CT 
+    # GPIO_21  --  DR
+    # GND      --  GND    
+
 Working MicroPython code for ESP32 can be downloaded from this repository and here are some outputs:
 
 ```