when I connect D0 it gets offline and returns as soon as I disconnect D0
As @fanoush says if that knocks it offline it sounds like there's a short between D0 and GND?
@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.
As @fanoush says if that knocks it offline it sounds like there's a short between D0 and GND?