I thought it has protection against that.

Genuine Arduinos do have some protection, yes.

Is it normal for them to react like that so easily?

Cheap Chinese rubbish? Sure. You get what you pay for.

How can I prevent this happening AGAIN..

Buy a real one. Also be more careful.

But at the price you pay for Chinese clones, do you really care if they end up broken? You can buy many clones for each genuine one, and while a genuine one may last longer, when you do manage to kill it (they aren't that much more rugged, but some components are more reliable, such as the USB interface chip), which you seem adept at, you would be far more upset than if you'd killed a clone.

So I would suggest invest in one Genuine one for special projects, and to support Arduino (if no one buys Genuine boards there will be no Arduino), and a pile of Chinese clones that you can experiment and learn with. Blow them up at will, and when you are happy with your project transfer it over to the genuine board for showing off to people.

I thought it has protection against that.

Genuine Arduinos do have some protection, yes.

Is it normal for them to react like that so easily?

Cheap rubbish? Sure. You get what you pay for.

How can I prevent this happening AGAIN..

Buy a real one. Also be more careful.

But at the price you pay for cheap clones, do you really care if they end up broken? You can buy many clones for each genuine one, and while a genuine one may last longer, when you do manage to kill it (they aren't that much more rugged, but some components are more reliable, such as the USB interface chip), which you seem adept at, you would be far more upset than if you'd killed a clone.

So I would suggest invest in one Genuine one for special projects, and to support Arduino (if no one buys Genuine boards there will be no Arduino), and a pile of clones that you can experiment and learn with. Blow them up at will, and when you are happy with your project transfer it over to the genuine board for showing off to people.

I thought it has protection against that.

Genuine Arduinos do have some protection, yes.

Is it normal for them to react like that so easily?

Cheap Chinese rubbish? Sure. You get what you pay for.

How can I prevent this happening AGAIN..

Buy a real one. Also be more careful.

I thought it has protection against that.

Genuine Arduinos do have some protection, yes.

Is it normal for them to react like that so easily?

Cheap Chinese rubbish? Sure. You get what you pay for.

How can I prevent this happening AGAIN..

Buy a real one. Also be more careful.

But at the price you pay for Chinese clones, do you really care if they end up broken? You can buy many clones for each genuine one, and while a genuine one may last longer, when you do manage to kill it (they aren't that much more rugged, but some components are more reliable, such as the USB interface chip), which you seem adept at, you would be far more upset than if you'd killed a clone.

So I would suggest invest in one Genuine one for special projects, and to support Arduino (if no one buys Genuine boards there will be no Arduino), and a pile of Chinese clones that you can experiment and learn with. Blow them up at will, and when you are happy with your project transfer it over to the genuine board for showing off to people.