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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.
@Mudderman
Well...would be so bold as to call my mac "new", but thanks ;)
I figured as much. When I first connected the card my MBP would even recognize the card as a usb device (in either of the mini-usb ports), googled it and found someone with similar problems which led me to the Prolific drivers and installed them. After that there was a /dev/tty.usbserial but only if I connected it to the mini-usb by the power led not the other one. But flashing failed and gave some random error messages as seen by my previous posts.
After flashing the card on my ubuntu machine (thank god I saved it in my closet) my MBP has no problem finding it and connecting to it on either mini-usb port.