Decorative lights arranged in different moving patterns look very interesting and are surely eye catching and that`s why these types of lighting arrangement have gained immense popularity in today`s world. Though the more complex lighting might need the incorporation of microcontroller ICs, simpler yet very interesting light effects can be generat
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ed through ordinary ICs, which require very few components for the configuration. A light chaser circuit is a configuration which generates a running or chasing light pattern which goes on repeating itself from start to finish, producing a very eye catching and fascinating light pattern. Here we are discussing how to make a simple 18 LED light chaser circuit which can be built by any newcomer in the field albeit the individual has some knowledge of soldering and regarding the commonly used electronic components. The circuit of a light chaser discussed here utilizes the popular Johnson`s decade counter IC 4017 for getting the desired light chasing effect. Another IC 4049 provides the clock signals to the counter ICs. We all have probably seen how the IC 4017 can be configured for creating the light chasing effect using LEDs, however the number of maximum LEDs supported by this IC is not more than ten. In this article we`ll learn how to make an eighteen LED light chaser by cascading two of these ICs. Looking at the figure we see how the two ICs are configured so that the chasing of the LEDs at its outputs are carried on for 18 LEDs. The diodes included in the circuit especially are responsible for switching the ICs into a cascading action. The diodes make sure the IC outputs are carried forward from one IC to another, so that the chasing effect is pulled for the entire 18 LEDs in the array.
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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