If the chip isn't sending data, is it that it's expecting a 5v signal? That shouldn't be an issue, but I'm struggling to see what the issue could be.
Also you said that it was originally working with Espruino, and then stopped?
@Gordon started
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.
If the chip isn't sending data, is it that it's expecting a 5v signal? That shouldn't be an issue, but I'm struggling to see what the issue could be.
Also you said that it was originally working with Espruino, and then stopped?