This is my first message here ...
I have this a Uno R3 that I had it connected to a 12V 1500 mA source. And I decided to created a small test so see how easy is to program it.
The moment I plug in the USB cable into the laptops port the laptop when dark and will not start!
I will try later today to take the battery out and see if that helps but I am afraid I fried it...
What is the best way to connect an arduino safely and if there is a risk to the computers why is this not clearly stated ?!
Can anyone chime in a bit about this topic ? Thank you!