Have you tried holding down the button for several seconds? There have been a few people recently complaining of issues, and it's just been because when the Bangle is flat and power is applied it no longer automatically boots. You need to hold the button down for get it to turn on.
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.
Is the Bangle completely off now?
Have you tried holding down the button for several seconds? There have been a few people recently complaining of issues, and it's just been because when the Bangle is flat and power is applied it no longer automatically boots. You need to hold the button down for get it to turn on.