Step 5: Program for Esp8266 and Arduino UNO (Optional)

Step 6: Hardware Connection for Arduino Uno and ESP8266 (Optional)

The wifi module I have used is ESP8266 which is connected to arduino UNO through UART. I have even added an OLED 1.3 inch display to check the esp8266 AT command and the trigger status of the relay. Note that Esp8266 Vcc and CH_PD should be connected to 3V3. This OLED is connected to arduino via I2C. The connections are shown in the scheme below.Please note that I have not used any level shifter in between UNO and ESP8266 and doing so will be at your own risk as ESP8266 is a 3V3 device .I recommend using a level shifter in between TX RX line.

Finally I want to thank you people for reading this and I hope you will make one your self and please note this is my first instruct able and I will be really happy if you can give me some feedback for improving .Thanks Again

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