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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.
Ollie
BTW regarding 1:
a simple way to "power-cycle" the puck is to get your fingernail under the battery and lift it slightly from the PCB towards the springs of the metal clip.
A quick way to reboot a stuck puck or get into bootloader mode when pressing the button while doing this...
For suspending it longer just push in the little transparent plastic tab - but leave it sticking out wide enough so you can just grab it to get it out again.