Introduction: RGB HexMatrix | IOT Clock 2.0

About: 🧑‍💻Passionate software engineer at Siemens, dedicated to driving digitalization by day. 🧑‍🏭By night, I'm a maker exploring IoT, product design, electronics, CAD, and 3D printing, sharing my projects with the w…

HexMatrix 2.0 is a upgraded of previous HexMatrix. In the previous version we have used WS2811 LEDs by that the HexMatrix became heavy and thick. But in this version of matrix we are going to use custom PCB with WS2812b LEDs which made this matrix to be 3 cm thin.

Step 1: Supplies:

Step 2: 3D Printing:

  • Click for STL files
  • 3D Print all the 3D models, make sure to print the screen in white PLA.
  • The design I made is for hanging on the wall you can modify as per your requirement in Fusion360 Fusion360 file.

Step 3: Circuit Connection:

  • Solder all the LEDs on PCB in correct order.
  • Make all the connections as shown in circuit diagram.
  • Vin~5V
  • D2~Din

Step 4: Code:

  • Open the code given in Arduino IDE. Click for Code
  • Install the FastLED Library and board library for ESP8266 boards.
  • Type your Wifi_Name and Password

//Your Wifi info

const char* ssid = "Wifi_Name";

const char* password = "Password";

  • Enter the time zone of your country

//Your time zone

int timezone = 5.5 * 3600;

  • If say for me in India time zone is 5:30 I have typed 5.5,similarly you have to put time zone of your country.
  • Select the Board type as ESP8266 (NodeMCU),select the port and upload the code.
  • After the code is successfully uploaded check the Matrix by powering it with micro USB adapter.
  • You can even display animations from FastLED library examples.

Step 5: Final:

  • Cut the legs of the NodeMCU board and put everything in the enclosure.
  • Put the screen and make some holes with drill and screw the sides.