8 LED`s Audio VU Meter
Posted on May 5, 2012
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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The heart(s) of the unit are the ETAL P3400 line modules available from Farnell. These modules...
This amplifier provides 140-W PEP nominal output power when supplied with input levels as low as...
The circuit will generate precision triangle and square waves. The output amplitude of the...
Microphone problem on Nokia 6630 usually caused by several reason, damaged microphone, broken...
This project uses a widely available IRF510 MOSFET. This N-Channel enhancement mode silicon gate...
This design was created at the request of my father. It is designed to operate a 240V a. c....
A 1994 Pontiac Transport. the front wipers only work on high. Someone said I need a wiper motor...
Turn ON or OFF electrical devices using remote control is not a new idea and you can find so many...
By the ultrasonic sensor, control and display (or buzzer) and local composition, it can tell the...
Driving an LED, we covered the electronic theory of how to use a Power MOSFET to turn the LED On...
The circuit below consists of two twin-T oscillators set to a point below oscillation. To set...
This circuit provides a cheap alternative to the LM3915 series LED displays. The meter relies on...
The device uses a microammeter with full scale deflection of 50 uA and with the resistance of 2...
ICi latch is used to lock the digital data clock signal rises ~ Qu holding data port AD7s23 thin...
Bridge the digital pressure signal conditioner MAX1458 excitation circuit is shown. Using the...
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