PixelClock – A Modern Visual Timer
PixelClock is one of my custom projects developed for a demanding client in the production sector. The goal was to create a large, highly visible countdown timer for lecture halls, allowing presenters to easily track how much time they have left for their presentation or topic.
The display measures 8 × 32 pixels, with each pixel sized at 1 × 1 cm, ensuring excellent readability even from the back of the room.
Simple Control via Android
Controlling the timer is quick and intuitive. A dedicated Android app allows the user to:
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Set the countdown time
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Start and stop the timer
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Adjust settings in just a few taps
When timing is not required, PixelClock can switch to alternative display modes. It can function as:
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A standard digital clock
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A date display
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A custom animated GIF display
Each pixel is individually addressable and supports an 8-bit color depth for each of the three primary colors, enabling vibrant animations and rich visual effects.
Modular and Scalable Design
The size of the display is fully configurable. PixelClock is built from 8 × 8 pixel modules that can be combined into larger matrices, making it easy to adapt the device to different room sizes and requirements.
High Contrast, Excellent Visibility
The entire unit is enclosed in a clean, professional housing with a smoked front panel. Each pixel is physically separated from the others, which significantly improves contrast and brightness. As a result, the display remains clearly visible even in bright, sunlit environments.
Open Non-Commercial Version
A non-commercial version of PixelClock was also created using the popular WLED platform. This version is available free of charge on my MakerWorld profile, including a full description and 3D printable files.
There are three diffrent version, depend on that what screen we want use:
