Indeed, at least I've added a fuse and Schottky diodes to protect the PC but I'd...

Sanddancer · on Feb 25, 2015

An isolating transformer, like the ADUM3160 ( http://www.analog.com/en/products/interface-isolation/isolat...) should be more than overkill in protecting there.

gbin · on Feb 25, 2015

Interesting, thanks for the pointer !

andyjohnson0 · on Feb 26, 2015

I use an Olmex isolator [1], which I believe is also based on Analog's ADuM chip. Its worth knowing that the ADuM only supports USB "Full speed" mode (12Mbit/sec) and not the normal "High Speed" mode (480Mbit/sec).

[1] http://uk.farnell.com/olimex/usb-iso/usb-isolator-1000vdc-fo...

comboy · on Feb 25, 2015

It's awesome that you made it all open source. You could probably spin up some kickstarter since making them in bulk would be cheaper (plus you get something for all the work you've done). I'd be happy to get one.

kenrikm · on Feb 26, 2015

Resettable PTC fuse for overvoltage and P-Channel MOSFET for reverse voltage protection without a large voltage drop.