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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, have you seen this post on the BLE module? http://forum.espruino.com/conversations/566/#comment6652
It looks like you can just solder it on. There's also another post on entering low-power mode with the HC-05 (http://forum.espruino.com/comments/5587/). I'm not sure anyone has tried it yet, but even that can get down to 3mA. There might even be a way to programatically turn it off, and then only turn it on when you need to transmit data.