Bought some Digisparks - they're presumably cloned as despite the eBay advert having "Digispark" written on the PCB, mine don't have that.
Anyway, I can't get the Macbook to recognise them. When I plug them into either USB port, with or without an extension cable, they light up for 5 seconds and then the other LED starts flashing (presumably a preloaded sketch) so they're getting power but I'm getting no ports appearing and
tail -f /var/log/system.log has no reaction.
Trying to plug them into my QNAP NAS gives a reaction on dmesg so I'm presuming they're not junk - I've tried 2 out of the 5 so far but am reluctant to open the other 3.
I've tried downgrading Arduino to 1.6.5 (which solved a lot of the compilation errors)
Macbook is a Pro running El Capitan. I had issues getting my Nano clones to work but solved that.
Can't even see a USB chip on the Digispark so don't know if there is a specific driver to download