Introducing the credit card-sized Muxcard computer
Recent technological advances have significantly minimized the size of computers. The Muxcard, developed by GitHub user krauseler, is a groundbreaking device that fits within the dimensions of a credit card and maintains a remarkable thickness of only 1mm. This innovation is crafted using an old plastic NFC card, distinguishing it from typical single-board computers by its sleek design. Currently, Muxcard is in the prototype stage, with future enhancements planned to increase its durability and power. For those interested in innovative design, exploring how designers turn simple accessories into statement pieces could offer valuable insights.
Technical specifications and future upgrades
The Muxcard features a RISC-V CPU architecture and a Wi-Fi-capable microcontroller, offering 320KB of usable SRAM and 384KB of ROM. The current version employs an ESP32-C3 CPU, and plans exist to upgrade to more robust processors like the ESP32-S3 or nRF52/53. It has a 1.54-inch, 200×200-pixel flex ePaper display for low power consumption, coupled with an LIS2DW12 accelerometer for motion detection. A 1mm thick, 30mAh LiPo battery powers the device, with intentions to replace this with an even thinner battery.
Future improvements and potential applications
The Muxcard is slated for further enhancements, including touch button controls, USB Type-C connectivity, and a microSD card slot. Despite its current exposed design, which the DIY community can utilize, efforts to reinforce and make the device more practical are ongoing. The creator envisions the Muxcard being used in smart home controls, security systems, or as a flexible alternative to the Raspberry Pi. If you’re interested in exploring more technology innovations, check out why AI matters now in graphic design.
Open source development
The Muxcard project is open source, with hardware files and firmware available online for non-commercial use, allowing enthusiasts to contribute to its development. Those interested should note that any commercial use requires the creator’s consent.
