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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.
@fanoush
Just FYI this Amiibo is probably quite popular so there are several additional models.
There is still this basic keychain type for ~ $4USD see e.g. https://www.aliexpress.com/item/1005006521163109.html however now some sellers are part of the "choice delivery" offer with free returns and free shipping over 10 USD so when getting more they are really cheap now.
There is $8 model with li-pol battery inside and usb-c charging - I just received one (from same seller, see previous link) - see https://ibb.co/album/CKkBWt it has same quiet buzzer and has four leds, two blink when you push button, two light up when it is put on charger so not sure how many gpios are connected to them - 2 or 4.
There are also some $15-$20 models with display see e.g. https://www.aliexpress.com/item/1005006770284160.html some have li-po battery inside, some have only CR2032 so check the listing details. I did not get that one yet.
They are all nrf52832 based. The one with display sometimes use name "pixl" or "pixl.js" since it was perhaps inspired by Espruino pixl.js and uses same or similar display - google "amiibo pixl.js" for details or check this https://github.com/solosky/pixl.js/ looks like there are several revisions of the hardware one having OLED screen.