Video circuits
Posted on Feb 7, 2014
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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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This can be used to control entry on a Cat or Dog Door" NOTE: There may be some changes and...
This amplifier functions over a wide range of gains, typically 1-10. It combines the LT1010 and a...
This Nicad battery tester discharges the test battery at a rate of 500 mA. When the endpoint of...
The indicator is intended for use with an audio amplifier or preamplifier, but it can also be...
Examples of RF and audio ANL circuits. Positive and negative clipping occurs in both circuits....
This sketch sends an ASCII A (byte of value 65) on startup and repeats that until it gets a...
Most all work off of some flip-flop like principle. And while I could have suggested a true...
The purpose of this application note is to present an example circuit, illustrating how to...
This circuit is mainly intended to provide common home stereo amplifiers with a microphone input....
Drive a four line LCD panel from an Arduino. The project started out as a way to drive the LCD to...
Touch controls are not only used to switch devices on or off. They can also be used to control...
This unit is designed for monitoring the audio output level across a loudspeaker when carrying...
As shown for the long timer circuit. This circuit uses an operational amplifier CA3094...
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