For those of you who have earbuds on your ears 24/7 and turn up the music loud all the way, you might have hard time telling whether someone has rung your doorbell like me.
If you are that deaf (because of such great earbuds, btw you can read the best earbud reviews here), you will need to build yourself one of these DIY train whistle doorbells that will surely alert you.
Check out more interesting categories: DIY, Entertainment, Featured DIYs, Featured Gadgets, Featured Hacks, Gadgets, Hack, HOWTO, Projects.
