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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.
@JumJum
For information only, there is an overlapping of GPIO16/17 on some boards
For WROVER boards, those with additional 4MB PSRAM, 16/17 are used for the PSRAM.
For WROOM boards like yours it should'nt be a problem.