Tiny credit card computer includes eInk screen and is just 1mm thick — Muxcard is powered by the ESP32-C3 microcontroller
… Right now the prototype specs are as follows: MCU: ESP32‑C3, a RISC-V CPU architecture, Wi‑Fi capable microcontroller with 320KB of usable SRAM and 384KB ROM. But future versions could use a more powerful ESP32‑S3 or nRF52/53. …