DTMF Tone Decoder
Posted on Dec 29, 2012
New Circuits
-
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.....
.
This section describes an experimental low power, low bandwidth data signaling system that...
This is a simple servo tester which will comprehensively test the capabilities of almost any...
During summer nights, the temperature is initially quite high. As time passes, the temperature...
A transducer senses a direct current magnetically, providing isolation between the input and the...
This circuit uses a digital voltmeter (formed from IC1 and IC3) to display fuel quantity as a...
Make the following connections: GND (pin 8) to ground, Vcc (pin 16) to 5V OE (pin 13) to ground...
To apperceive whether it is freezing you alone charge to admeasurement the temperature. This has...
The article on my RGB LED fader has been one of the most-visited articles on this blog. Since...
The LOEWE F875 SENSOTRONIC CHASSIS 543/490 is realized with the F800 LOEWE Chassis serie and in...
An electronic circuit is composed of individual electronic components, such as resistors,...
As the robot`s battery voltage would slowly drop, the servo`s centre point would drift. After a...
This handy, pocket-size mobile transmission detector can sense the presence of an activated...
characters left: