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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.
@hansamann
OK, although I've been super careful and really never connected BAT (which was 12V during the time the solar panel was connected), it seems my CC3000 is burnt. I've had troubles connecting and finally switched the CC3000 against a second one that I have. In the old setup, with 5V connected to the micro USB, CC3000 again on BAT/GND, it now works again.
During the solar panel testing, I really unplugged espruino from power, then connected CC3000 to GND and 3.3V - as BAT would now be 12V - and started up. After that did not want towork, I began investigating.
Is 3.3V on Espruino guaranteed to be 3.3 - even if a 12V battery is connected to BAT and GND?