Line 94: |
Line 94: |
| * wire | | * wire |
| * rubber band | | * rubber band |
| + | |
| + | [[File:Carbon microphone materials.jpg]] |
| + | |
| + | Crush the charcoal to a fine powder. Make a hole in the centre of the lid. Strip a small amount of insulation from the wire, pass the wire through the hole. Then place a piece of foil against the wire. Fill the lid with crushed charcoal. Place foil over the charcoal and secure with a rubber band. |
| | | |
| ==Links== | | ==Links== |