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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.
@yngv126399
https://www.aliexpress.com/item/1005004728587963.html
The board is easy to solder too, plus you get two buttons.
inside
I should add: I removed the original SQUARE display as it was cracked on delivery; that leaves the entire 12-pin array of solder points so if you can solder at 0.6mm you can get 3.3,GND,and 5 GPIOs (for the display CS,RST,SDA,SCL,DC). These are tricky and fragile solder points so I just used two here and secured them