Colour (Sound) Organ
Posted on Feb 7, 2013
New Circuits
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This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of.... -
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is.... -
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to.... -
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This.... -
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the.... -
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,.... -
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the.... -
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power.... -
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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This circuit is for a QRP (low power) antenna tuner, a.k.a. a transmatch, for use in the short...
The reason why I'm using a LCD display is because it allow me to display many characters and it...
This circuit employs an adjustable resonant tank circuit which insures operation at the desired...
The VHF frequency is generated by a tuned Hartley oscillator circuit. Resistors R2, R3, and R4...
The trip point is set half way between the supplies by Rl and R2; R3 provides over 200 mV of...
The circuit shows a simplex fiber link between the NE5080 transmitter and the NE5081 receiver....
A variable dock-pulse generator is made up of two sections of IC1 (a 4069 CMOS hex inverter). Rl,...
Originally, this circuit was used to sense a low-water level in a Christmas tree stand, but the...
This circuit operates from a 16- to 50-V supply. Adding the buffer circuit (within the dashed...
Useful for A/B control, the IR receiver shown controls a relay from an infrared beam that has a...
This is a circuit schematic diagram for the VU meters. Circuit diagram is controlled by IC TL072....
A few years ago, someone gave me a small wireless infra-red keyboard, part no. RC-KB2, designed...
Anti-jamming circuit (watchdog circuit): KA555 interference when analog baseband circuit shown in...
As illustrated, 555 and Rl, RPl, C1 controllable audio oscillator and other components, f...
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