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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
Yeah, it's just BLE.
Basically the Puck can only have one concurrent connection - there's no point in it continuing to advertise once connected, since even if it did it couldn't be connected to.
I'm not quite sure what you mean about Pucks connecting to each other though - you mean flash each Puck with code that tries to connect to the other one when a button is pressed?
That should work fine - as long as you're not connected to either Puck.
Just to add - if you do want to debug while a Puck is being connected to from another Puck, you can use a USB-TTL converter to make a wired connection: http://www.espruino.com/Puck.js+Quick+Start#by-wired-connection