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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.
BootySnorkeler
Lowest forward bias is best... a good schottky does well. And yes, this is perfect protection. You have just to know that your module has
3 - diodeForwardVoltageas input voltage (less than 3V).