With the microelectronics and technical fast development of information, the digital technical development represented by one-chip computer changes with each passing day. Because one-chip computer have small, low power dissipation, strong expanding flexibility, micromation and using advantaging such as being convenient control function, and apply
Click here to download the full size of the above Circuit.
to the control of various instruments, network communication and data transmission of the computer extensively, real time control and data processing of the industrial automation process. In fact, control by adopting the one-chip computer, can realize the digitization, intelligent and micromation of the instrument. This text realizes the design of the audio analyzer by comparing with and choosing to adopt LPC2148 chip solution. While analyzed to the voice signal, until Fu set up the leaf and vary FFT algorithm fast literary grace this, namely carry on dispersed V Visualization to the voice signal at first, then carry on FFT operation, find the power number value that each discrete frequency of signals is lighted, and get the power spectrum of discretization, calculate in the frequency domain the total power of examining the voice signal finally. On the choice of the processor, can usually choose MCU of 8, 16 or 32-bit microcomputer. But in the course of dealing with the signal, usually can use Fu set up the leaf and vary FFF algorithm fast, so need to carry on a large amount of floating point arithmetic, and a floating point should take up four byteses, so take up a large number of memory in the processing procedure, the operating time of floating point is very slow at the same time, so it is generally difficult to finish operation to adopt 8 ordinary MCUs and 16 MCUs during when sure. Consider magnitude and operation speed...
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.....
characters left: