and the red light constantly shines
Were you holding down the Pico's button when applying power? It might just be in bootloader mode
@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.
Were you holding down the Pico's button when applying power? It might just be in bootloader mode