Using an integrated circuit that was available at the time, this circuit produces animal sounds such as mooing, rooster crowing, etc. The circuit is from a March 1997 Electronics Now magazine.
The assembly of this amplifier was described in an article in the magazine Radio Electronics from...
Mouser Electronics offers a vibration sensor which is considered the smallest in its class. This...
This circuit was found in a documentation by A. Fanzeres making use of a grounded metal housing...