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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@allObjects
The 'all-you-can-eat wire-buffet' hints the use of a dedicated peripheral display that includes the logic to receive by, for example I2c, SPI, etc. and do the multiplexing. ...if the display is not the only thing you want to show case (educationally).