The circuit is based on an LM555 timer and a CMOS Quad Schmitt Trigger.
It can be used on tricycles, bicycles, battery-powered toy cars, and any other games where a wailing siren sound is desired.
Description
A speaker is required (not included), use a 10-watt 8-ohm speaker for great results.The PCB is double-sided, plated thru-hole, 1.50″ long x 2.50″ wide made of .062″ FR-4 epoxy glass. It has a green solder mask (LPI) on both sides with white silkscreen on the top side and four mounting holes.
