Used as a sound effect generator it can be connected to external amplifiers, tape recorders etc. It can be used for door-bells or other purposes thanks to a built-in audio amplifier and loudspeaker _ Contact Flavio Dellepiane, fladello tin.itĬuckoo-song Generator - This circuit generates a two-tone effect very much alike the cuckoo song. _ Credit to SparkyĬricket Chirping Generator - Funny gadget for props and jokes.5, 12V Battery operation. Your cross pieces can be any length, but I made mine the size of my IC PCB (standard IC PCB from Radio Shack). The notch cut on the angle bar is about 2" in from the front (the length of your servo from front to back mounts). The size I picked out is 1/16" X 1/2" X 3/4" and the sides are just short of 7". May be used as an alarm, a sound effects generator or perhaps a replacement doorbell _ Designed by Andy CollisonĬolour Organ - Three Lamp-Channels Output - Built-in Electret Microphone _ Contact Flavio Dellepiane, fladello tin.itĬricket Chipper Sound Generator - Here is the aluminum "angle bar" I used. Each period is 45 minutes long, while the duration of the lunch break_ Electronics Projects for Youīird Sound Generator - A few years back, Wilf Rigter posted this circuit for making bird-like sounds _ Designed by Wilf RigterĬanary Sound Effect - An electronic version of a chirping canary. _ Contact: Charles Wenzel of Wenzel Associates, Inc.Īutomatic School Bell - Consider that a school has a total of eight periods with a lunch break after the fourth period. The circuit can be built simply by using one 556 or two 555 timers _ Designed by Tony van Roon VA3AVRģ Level Audio Power Indicator - Battery-operated3 LED display that connect it to loudspeaker output _ Contact Flavio Dellepiane, fladello tin.itĪmbulance Siren - This siren circuit simulates police, fire or other emergency sirens that produce an up and down wail. The sound is triggered automatically as the train reaches a desired place on the track so you can produce the sound as the train approaches stations, level crossings, etc.
Links to electronic circuits, electronic schematics and designs for engineers, hobbyists, students & inventors:Ģ Tone Train Horn - With this circuit you can electronically simulate the noise of a diesel-train horn.