Introduction: Node MCU WI-FI CLOCK

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About: Just a tinker in electronics

In this instructable I will be you the detailed steps to make a clock that displays both time and day using Node MCU Wi-Fi module and a 128 x 32 OLED display.

Supplies

1 x Esp 8266 Wi-Fi module or Node MCU

1 x 128 By 32 OLED display

4 x Female to Female jumper wires

Step 1: Watch the Video If You Feel Lazy to Read

The video gives you the full information. But if you got stuck some where, Here is the detailed steps.

Step 2: Connect the Components According to the Schematic

Connect The Components According To The Schematic

Step 3: Setting Up the Arduino Ide for Node MCU

Step - 1 : Go to Files

Step - 2 : Select preferences

Step - 3 : Paste this in the additional boards manager http://arduino.esp8266.com/stable/package_esp8266com_index.json

Step - 4 : Go to manage libraries and search NTP Client

Step - 5 : Click install

Step - 6 : Search Adafruit SSD 1306

Step - 7 : Click install

Step - 8 : Click install all


Step 4: Download the Code

Download the code from below and make the following modifications.

Attachments

Step 5: Wi-Fi Name and Password

Step - 9 : Enter your Wi-Fi name. make sure it is 2.4 Ghz and not 5 Ghz as it is not supported by Node MCU.

Step - 10 : Enter your Wi-Fi password.

Step 6: Calculation for UTC Offset

Get your UTC value from here: https://www.timeanddate.com/worldclock/?query=

For example: if your UTC value is -4:30 or negative or positive

The first part is hour and the second part is minutes

Multiply hours i.e (-4) with 3600 as there are 3600 seconds in an Hour

Multiply minutes i.e(30) with 60 as there are 60 seconds in a Minute

Add both the values together i.e -14,400 + 1800 = -12600

Step - 11 : Enter the calculated value as -12600

IF YOU GET A POSITIVE VALUE ENTER THE VALUE AS POSITIVE.

Step 7: Upload the Code to Node MCU

Select boards and type NODE MCU and select node MCU 1.0 ESP 12 E mod and then select the correct COM port and then hit upload.

Step 8: Possible Issues You May Run Into

  1. The display not lighting up. Then the Wi-Fi name or the password may not be incorrect.
  2. If the time is not correct then the utc offset value may be incorrect. Make sure that the calculation is correct.

Step 9: Thats It. You Finally Made It

Step 10: Subscribe If You Feel I Earned Your Subscription

Feel free to let me know where I could improve this instructable. Or if i earnt your subscription you can check out my channel.

https://www.youtube.com/channel/UCGnZFzWv-a-xBXPcCzoG5NA.

Thank You