Automatic multipurpose emergency lights circuit diagram
Posted on Mar 28, 2007
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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 is a very simple project using a printed circuit board and 8 components. It will flash an...
You'll find that this is a very easy project to build. It will transmit good quality sound in the...
Sensing circuit detects either steady or fluctuating air flows. The heart of the circuit is a...
Originally, this circuit was used to sense a low-water level in a Christmas tree stand, but the...
The hobby circuit below uses an unusual method to generate about 12, 000 volts with about 5uA of...
A simple lab power supply electronic project can be designed using this circuit diagram which is...
While discussing an all-linear automatic night light circuit I mentioned that I was testing an...
Attach a 12V fan to this circuit which draws 70mA (0. 007A), so the circuit must have at least...
Many fire alarm circuit is published in different website. But, here in this website is a simple...
rfRXD0920 The RFRXD0420 RFRXD0920 are low cost, compact single frequency short-range Radio...
The following is one of the most rare and special documents here at the DigiBarn, the only known...
It looks as if they are highly prone to harmonics meaning in this case, that if the resonator is...
Accurate control of water temperature, this got me thinking and I figured it was a good...
This discussion continues on from the audio tone control topic, which introduced both passive and...
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