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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.
@Hardware_Hacks
Thanks for the pointers Gordon I'll take a look.
A9 is just an enable pin which disables/enables the GPS running when you change the output. It's worked fine on other devices this way so I would assume your first point and second post are more to do with it.