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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.
@allObjects
...if the Puck built-in NFC coil would be 'switchable' between antenna - as it is right now - and between transfer/charging coil - the new feature - that would be great...
There is still some active circuitry needed, because because pass-filters cannot do the job... except they may be switchable. I have no knowledge about the frequencies such charging applications use.
Puck Built-In Micro Energy Harvesting... a next thing? ( @Gordon? )