Redditor Develops Ultra-Thin Credit Card-Sized Computer with Innovative Engineering
A Reddit user, known as krausler, has engineered a computer that is the size of a credit card, named the Muxcard. This device measures only 1 mm in depth and includes features such as Wi-Fi, low-energy Bluetooth, an E-Paper display, an accelerometer, and an NFC reader. The creation of the Muxcard involved significant engineering challenges, particularly in maintaining mechanical stability and managing material fatigue. The main chip used is an ESP32-C3FH4, and it is powered by an ultra-thin lithium polymer battery. Despite its small size, the Muxcard is considered a functional computer, although krausler acknowledges that the term 'computer' might be an overstatement. 
