Trying to Make a Wireless Lavalier Microphone
11:12
Impossible Active Audio Noise Cancelling by Muzo
11:08
Video Recording with Rode Shotgun and Wireless Lavalier Microphones
10:03
How to Wiretap Phone Line with DIY Circuit
15:43
Build a carbon microphone with a soda can and a paper clip.
18:42
Testing the world's biggest LED
5:56
LIGHTER is a MICROPHONE
11:18
Make a SUPER HIGH VOLTAGE Capacitor
10:48