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Motion: Activated Sound

Photo: Sound Activated Electronic Switch Sound Activated Electronic Switch
Adjust the sensitivity of this circuit to control a Relay that can turn on whatever is connected to the contacts of the relay. Very practical circuit for a variety of projects. Turn on a light when your dog barks, or set of a siren when an intruder makes
Photo: Sound Voice Activated Relay Switch Sound Voice Activated Relay Switch
This mini-VOX - voice operated relay - is based on a circuit published in Silicon Chip, 9/1994, p31.
Photo: Gun Sound Effects Chip with Ambulance, Fire, Machine Gun Sounds Gun Sound Effects Chip with Ambulance, Fire, Machine Gun Sounds
Easy to build Gun Sound Effects generator kits, also inludes several different sounds and tunes.
Photo: Sound Activated FM Transmitter Sound Activated FM Transmitter
Sound turns on the transmitter, which operates in the FM radio band. A neat way to catch a thief in another room or garage. The volume of sound needed to trigger the circuit is adjustable. The two stage transmitter has good range and the circuit powers do
Photo: Train Sound Effects Train Sound Effects
Easy to build sound effect generator kits, inludes several different sounds and tunes.
Photo: Cellular Phone Sound Effects Cellular Phone Sound Effects
Easy to build sound effect generator kits, inludes several different sounds and tunes.
Photo: Sound Effects Generator Electronic Circuit Sound Effects Generator Electronic Circuit
Extremely useful electronic circuit capable of producing a variety of cool sound effects.
Photo: Motion Detector Motion Detector
This super sensor detector sounds an alarm if someone approaches the unit. Adds safety to your home or office. Learn the basics of motion detector technology. Uses pyroelectric infrared sensor.
Photo: Assorted Melodies Sound Chip Assorted Melodies Sound Chip
Easy to build sound effect generator kits, inludes several different sounds and tunes.
An electronic circuit that uses a 556 (Dual timer) IC to produce a two-tone train horn sound effect. Equivalent circuit using two 555 timers (single timers) is given.
0 Comments - in Sound Effects
This page links to two electronic circuits. Once circuit produces emergency siren noises (police, fire, ambulance), and the other is a chime type sound effect.
Photo: Light Activated Relay Switches Light Activated Relay Switches
Three relay-based electronic switching circuits that switch according to light levels.
Photo: Sound Car Robotic Kit Sound Car Robotic Kit
It's snail-like design may give a lethargic impression but, contrary to first impression, COMET is quick to respond and scurries speedily on command.
Photo: Educational Robit Kit Moon Walker II Educational Robit Kit Moon Walker II
A stronger, Mecha-Medusa is a walking robot that operates with the aid of a sound sensor. Clap hands or snap fingers to command this robot to start walking on four legs. Stops automatically after a preset time. Ideal for the hobbyist or budding scientist.
Simple schematic for a doorbell electronic circuit that produces a ding-dong sound when your visitors presses the door-bell button. Based on IC 8021-2.
Photo: Infra Red Motion Movement Detector Infra Red Motion Movement Detector
This is an excellent security device, sees infra red heat of intruder in field of view. This is a recent design for a PIR detector; should not be underestimated. Rather than the usual opamps-amps and amplifiers, this kit uses a movement IC. Has PC board m
Photo: Light Activated Music Box Light Activated Music Box
This circuit will play a tune when light strikes a light dependent resistor, such as when a music box lid is opened.
Dick Cappel's page illustrates an extremely basic small FM transmitter that rebroadcasts sounds using a 1.5 Volt battery. very simple circuit.
Photo: Siren Alarm Horn Electronic Kits 9 volt Siren Alarm Horn Electronic Kits 9 volt
Easy to build sound effect generator kits, inludes several different sounds and tunes.
Photo: Broadcast Warehouse All-in-One 1 Watt FM Transmitter PCB (Fully Assembled) Broadcast Warehouse All-in-One 1 Watt FM Transmitter PCB (Fully Assembled)
This is the Brodcast Warehouse All-in-One PCB 1 Watt FM Transmitter. This item has a built in limiter / compressor & stereo encoder!
Our Morse Moris code guide shows the Morse code beeps and sounds for the alphabet, which will help you read Morse Code moris code. Also features Alphabetic sounds for Moris Code.