Credit Card Computer Prototype Unveiled

A Marvel of Miniaturization

A maker has shared plans for a fully functional computer prototype, no larger than a credit card, on GitHub. The device, dubbed Muxcard, measures just 1mm in thickness. Details were made public on 10 May 2026. The project is open for experimentation and modification.

The Muxcard is powered by the ESP32-C3 microcontroller, a relatively compact chip. It features an eInk screen, making it a unique, ultra-thin computing device. The creator encourages non-commercial use of the prototype.

The Muxcard's tiny size is a significant achievement, showcasing advancements in microcontroller technology. By utilizing the ESP32-C3, the maker has successfully condensed a working computer into an extremely small form factor. This level of miniaturization has potential applications in various fields.

Can This Tiny Computer Revolutionize IoT Devices?

The device's eInk screen is another notable feature, providing a low-power display solution. This is particularly useful for applications where power consumption is a concern. The Muxcard's design and capabilities make it an interesting project for makers and developers.

The Muxcard's compact size and low power requirements make it an attractive option for Internet of Things (IoT) applications. Its potential uses include smart home devices, wearables, and other connected products. The project's open nature allows developers to explore various possibilities.

As the Muxcard project continues to evolve, it may lead to innovative applications and products. The device's tiny size and capabilities could pave the way for new uses in fields such as IoT and beyond.

Frequently Asked Questions

What is the Muxcard powered by? The Muxcard is powered by the ESP32-C3 microcontroller. This chip enables the device's computing capabilities. It's a relatively compact and efficient microcontroller.

How thick is the Muxcard? The Muxcard measures just 1mm in thickness. This makes it an extremely thin computing device.

What is the intended use of the Muxcard? The creator encourages non-commercial use of the Muxcard. The project's open nature allows developers to experiment and explore various applications.