Auto light Controller and Visitor Counter
Posted on Nov 12, 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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This circuit combines two LTC1043s with a based humidity transducer in a simple charge-pump based...
A commercial diode is the detector in this highly accurate radiation monitor. The lowdrift...
With 3-V to 9-V supplies, this amplifier can provide from 100-mW to 1-W output into a 4 and...
This light-wave receiver consists of a 741 operated as a preamplifier and an LM386 operated as a...
You may need also need 10 diodes and different resistors, especially if you are using white LED`s...
This light sensor switch circuit allows the automatic connection of a lamp when the light is low...
Electric guitars use coils (guitarists call them pickups or elements) to convert the vibrations...
VisISP-52 is a Windows application that will run on all modern versions of Windows (Win95, Win98,...
The circuit is able to charge 2. 4V, 4. 8V, and 9. 6V NiCd batteries. The LM317T IC showed in...
This circuit is essentially a light chaser but it can also be set to provides heads or tails (Two...
Default setting for the UART is 9600 baud, 1 start bit, 1 stop bit, no parity. You can configure...
Gray Code. A positional binary number notation in which any two numbers whose difference is one...
This multi-tone siren is useful for burglar alarms, reverse horns, etc. It produces five...
If you ever thought of experimenting with pulse-width modulation, this circuit should get you...
Electronic tube amplifier lovers started his art that simple, excellent single-ended Class A...
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