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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.
@Gordon
That's insane! I'll have to try sending off some designs now :)
I just uploaded the exact file I provided in that last post and I'm quoted $8.36 + shipping for stainless. Potentially it's still quite a bit of work to swap out the aerial, HRM and charge connector (and the aerial is going to be no use inside the metal case anyway) but it's a very interesting option!
edit: I wonder what the tolerances will be like on it (it says 0.3mm which seems pretty good). In a way it's a shame it's not aluminium because then you could have finished off any mating surfaces with your mill - stainless is usually a bit of a pain to machine