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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.
@jlawson
That did it.
I initially assumed the board wasn't getting updated properly as one did work.
Just for reference; there is a 32.768kHz crystal on the original Espruino boards I tried.
Excellent work. Thanks Gordon.