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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.
@DrAzzy
No, connecting power via USB will prevent it from working over bluetooth (or it did when I was playing with it).
In fact, I think it prevents it from working if it's plugged in at all, even if the other end is dangling - not sure about this last part, but I'm like 80% sure that I wasn't able to get it to connect until I unplugged the USB from the Espruino - call it 60%, because at the time, the HC-05 had a dodgy solder joint on the RX pin, and unplugging the cable might have caused a different amount of pressure to be applied to that dodgy connection, making it work. But the dodgy connection was almost always working at that point.
Also, check the solder joints to the HC-05, it's really easy to get a bad connection there.