tone decoder
Posted on Apr 4, 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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ICl, an Intersil ICL 7106, contains an aid converter, a 3,1/2-digit LCD driver, a clock, a...
The outputs from the comparators will swing, in sequence, from high to low as the input voltage...
Arduino Uno has a ATMEGA328P-PU microcontroller, and bunch of other stuff on the board. I`d like...
A variable frequency, variably duty cycle 555 configuration in astable mode. I`m using a set of...
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This article includes a list of references, but its sources remain unclear because it has...
An 5 pole elliptic low pass filter (impedance: 50Ohm, -6dB cut off frequency 33MHz) connects the...
On the Uno boards, there`s an IC which is responsible as a USB to serial converter and it makes...
The Analog Devices ACP3610 is a voltage doubler that works with a switched-capacitor converter,...
This article describes how to build a simple uC based delay circuit for photographic applications...
This is a very simple square wave generator circuit built with IC 74LS00 that can generate square...
This circuit was intended to be used as a separate, portable unit, to signal by means of a LED...
Here is the circuit diagram of a guitar preamplifier that would accept any standard guitar...
As shown in FIG exchange by PGA204/205 op amp OPA602 constituted coupled programmable amplifier....
As shown in the design of the power supply circuit diagram. Using the oscillator circuit 74HC...
Circuit consists of three parts is light-control section 5: Two foot f light time control...
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