Temporary Microphone

Did you know that headphones can be used as a microphone.

Technically, there is not much difference between the circuits of a Microphone and a Headphone. It's just that the headphone is designed to spread voice and an microphone to capture the voice

Now, how can we use the headphones as microphone? All you need to do is connect the headphone in microphone slot in your computer (usually in the left of the headphone slot). Now, you can use it as a microphone. Since headphones are not designed to capture voice, you need to speak on the earphone and speak a bit loud in order to be audible to the other end.

Please note that this is just a temporary solution. Just an alternative in cases you hardly need a microphone.