As we all know, wearing a helmet is mandatory in most countries, including India while driving a vehicle, not just because of ...

What if you could get an instant SMS alert the moment a fire or smoke is detected at home or office? Through this project ...

You could put the Arduino in deep sleep, if you wanted to and that LED will still blink. With a little work, you could probably adapt this idea to any number of circuits out of the 555 playbook ...