Clap switch using timer 555
Posted on Jun 28, 2012
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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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Both halves of the circuit are identical. Both inputs have a dc path to ground via the input 47k...
The following circuit enables me to measure inductance of the inductor labeled LX which is the...
Electrical potentials are generated by muscle when there is movement. This Signal can be pick up...
Numbered components are so designated for PC-board layout purposes. C5 and C8 are disc ceramic....
Traditionally, high quality reception of VLF natural radio signals has involved driving or hiking...
This is a very simple game circuit. You can play this with your friends. To win this game one has...
Discussion about application of microcontroler PIC16F84 both for Control or Robotics and How to...
transistors as a darlington pair. The circuit is also using a thermistor to detect or sense the...
When the water is empty the wires in the tank are open circuited and the 180K resistors pulls the...
A preamplifier circuit suitable for high impedance type electric guitar pickups is given here....
A circuit of an off-line telephone tester which does not require any telephone line for testing a...
Modify it to click and latch a relay when i press the button from any ware in the house. Also if...
The EMD SD45 was manufactured starting in 1965 so that it represents one of the newest prototypes...
Most sound card microphone inputs require a minimum signal level of at least 10 millivolts, but...
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