Please use an USB isolator!

I’ve just came across a serious problem that can be caused by the Arduino version. In the unlikely event of a blown amplifier chip, a short circuit on the USB bus could be caused. This may damage your computer (or just reboot it, as it has happened to me).

This problem can be circumvented by using a USB isolator circuit/adaper between your computer and the Arduino board.

Such isolators can be found on eBay for about 20$ – just do a search for “ADUM4160”.

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