Keyless Lock
Posted on Mar 13, 2013
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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This page features H-Bridge circuits used for controlling direct current motors. Several designs...
This tachometer can be set up for any number of cylinders by linking the appropriate timing...
This circuit provides a simple means of obtaining phase shifts between zero and 170°. The...
Car power amplifier uses SI1050GL IC as the main amplifier. The output power 50 Watt 8 ohm mono...
This Battery Back-up circuit can be added to surveillance systems or control like alarms to power...
This 860 MHz Phase Locked Loop (PLL) oscillator circuit is for 1200 MHz transverter`s local...
On the poles, the plane of the pendulum swing would make one rotation each day. On the equator,...
The LM1279 is a full featured and low cost Video Amplifier with OSD (On Screen Display). 8V...
This simple counter can be used to count pulses, as the basis for a customer counter (like you...
Consumers of mobile wireless devices expect a workable, real-world balance of performance and...
A great collection of touch switch circuits. A touch switch is an electronic device that enables...
The CAN Interface is a Balanced (differential) 2-wire interface running over either a Shielded...
Sound with CD4011 digital circuits made light lamp dual-control delay section circuit shown in...
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