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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
It might have been some recent changes in 'cutting edge' Espruino firmware. Espruino used to always get polled every 20ms when connected, which uses up a bunch of power. Now it polls every 7.5ms which makes everything way faster, but after a minute or so of inactivity it drops down to every 200ms until stuff happens again.
It means your Puck will now last a year on its battery even when it's connected, but if you just press the button after > 1 minute of inactivity then the sending of the button press and release will take 400ms. It's way more likely that you can press the button twice within that 400ms period :)
You can turn it back to default behavior with
NRF.setConnectionInterval(20)if you need to.