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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.
@Gordon
Using what I'd mentioned in the last post you shouldn't need an ESP32 - it can all be done from just the one Raspberry Pi.
Yes, when you're connected there won't be any advertising so the data won't be sent. However if you're writing this as an app you could just momentarily disconnect from your phone by calling
NRF.disconnect()