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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
Hi - I'm not sure I understand the question? You mean can you send more than one chunk of data per connection interval?
I'm not 100% sure - I don't believe so. However with BLE5 (and possibly before?) the two computers can negotiate to use larger packet sizes, so you're not limited to 20 bytes. That's not part of Espruino yet, but hopefully it will be at some point in the future - however it's only possible if both ends support it.