{"id":23673582,"url":"https://github.com/Smengerl/matrix_display","last_synced_at":"2025-12-21T09:30:15.892Z","repository":{"id":270159272,"uuid":"909495047","full_name":"Smengerl/Matrix_Clock","owner":"Smengerl","description":"Matrix LED retro clock with NTP sync based on 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LED Matrix Retro Clock\n\nA retro style clock with matrix LED display using an ESP32 microcontroller with automatic NTP time sync.\n- Displays the current time in HH:MM format\n- 4 Digit LED matrix display (8x8 pixel)\n- Customizable animations, dimming and \n- Automatic time synchronization using NTP\n\n\u003cimg src=\"./print/photos/example_usage.jpg\" alt=\"example_usage\"/\u003e\n\n\n## Hardware Requirements\n\n- ESP32 (housing designed for USB C version)\n- 4 digit 8x8 LED matrix display based on MAX7219 (FC16)\n\n\u003cimg src=\"./schematics/schematics.jpg\" alt=\"schematics\"/\u003e\n\n\n## Software Requirements\n\n- PlatformIO\n- MD_Parola (via PIO)\n- ESPDateTime (via PIO) \n- WiFiManager (via PIO)\n\n## Mechanics\n\nRenderings / Prototype:\n| Front                                                | Back                                                 | Isometric |\n| ---------------------------------------------------- | ---------------------------------------------------- | --------- |\n| \u003cimg src=\"./print/rendering/front.png\" alt=\"front\"/\u003e | \u003cimg src=\"./print/rendering/back.png\" alt=\"back\"/\u003e   | \u003cimg src=\"./print/rendering/iso.png\" alt=\"iso\"/\u003e |\n| \u003cimg src=\"./print/photos/front.jpg\" alt=\"front\"/\u003e | \u003cimg src=\"./print/photos/back.jpg\" alt=\"back\"/\u003e   | \u003cimg src=\"./print/photos/iso.jpg\" alt=\"iso\"/\u003e |\n\n\nThe only mechanical part required is the housing which consists of a front and a back piece.\nUsing the acrylic plate on top of the LED matrix display is optional but gives a cleaner look (not used in the example photos)\n\n### 3D-Printed Parts\n\n| Filename                     | Thumbnail                                                                | Required | Notes |\n| ---------------------------- | -------------------------------------------------------------------------| -------- | ------|\n| `./print/frontside.stl`      | \u003cimg src=\"./print/rendering/frontside.png\" alt=\"frontside\" width=\"300\"/\u003e | 1        | |\n| `./print/backside.stl`       | \u003cimg src=\"./print/rendering/backside.png\" alt=\"backside\" width=\"300\"/\u003e   | 1        | |\n\nPrinter settings:\n- All printed parts designed for PETG. \n- Best experience on my printer was to print the front upside down (the actual front of the case facing the print bed) as this does not require any supports. For a cleaner look you can consider to print it reversed with ironing enabled but note that this requires a lot of support material. \n- Using fuzzy skin for all outside walls creates a nice touch\n- No rafts/brim etc. reguired for any model.\n\n### Required parts\n\n| Name              | Spec                          | Required | Notes |\n| ----------------- | ----------------------------- | -------- | ------|\n| countersunk screw | M3 5mm, e.g. DIN EN ISO 4762  | 4        | To attach ESP to back of housing |\n| countersunk screw | M3 5mm, e.g. DIN EN ISO 4762  | 4        | To attach display to back of housing |\n| cylinder head screw | M3 10mm | 4        | To fix back and front of housing |\n| semi-transparent acrylic board | max 2mm, 140-150mm * 33-35mm | 1        | Optional, for cleaner look |\n\n### Assembly\n\n- All electronics are screwed to the back of the housing.\n- The acrylic plate is glued to the front.\n- Finally the front of the housing is snapped into the back and tightened via the screws from the back.\n- Consider using some hot glue to make sure everything stays in place\n\n![assembly](./print/rendering/assembly.gif)\n\n\n\n## Installation\n\n1. Clone the repository:\n   ```sh\n   git clone https://github.com/smengerl/Matrix_Clock.git\n2. Open the project in PlatformIO.\n3. Wait for PIO to configure and download the required libraries\n4. Compile and upload the project to your ESP32 microcontroller.\n\n\n## Usage\n- Power on the ESP32.\n- On first usage only: Configure the ESP to your local WiFi. For this, connect to the ESP's access point and use the default configuration page to enter your WLAN SSID and password \n- Wait for NTP sync\n- The current time will be displayed on the LED matrix.\n\n## Acknowledgements\nMD_Parola library by MajicDesigns\n","funding_links":[],"categories":[],"sub_categories":[],"project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2FSmengerl%2Fmatrix_display","html_url":"https://awesome.ecosyste.ms/projects/github.com%2FSmengerl%2Fmatrix_display","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2FSmengerl%2Fmatrix_display/lists"}