555 timer IC
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555 Timer Based Electronic Code Lock Circuit Digital Code Locks are very popular in Electronics, where you need to enter a particular ‘Code’ to open the Lock. This type of Locks needs a Microcontroller to compare the entered code with the predefined code to open the Lock. We have already built these kinds of Digital Locks using Arduino, using Raspberry Pi and using 8051 microcontroller. But today here we are building… |
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Automatic Rain Sensing Wiper Circuit using 555 Timer IC You have seen Automatic Wiper System in luxury cars where Windshield Wiper automatically gets activated when there is Rain or if there is some water on the windshield. Electronic Wiper is very common device that is attached in every car to wipe the water on the windshield during the rain. But generally they are manually operated and we need to switch them ON manually. But… |
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Frequency Counter using Arduino Almost every electronic hobbyist must have faced a scenario where he or she must measure the frequency of a signal generated by a clock or a counter, or a timer. We can use an oscilloscope to do the job, but not all of us can afford an oscilloscope. We can buy equipment for measuring the frequency, but all these devices are costly and are not for everyone. With that in… |
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Voltage Doubler Circuit Voltage doubler is the circuit where we get the twice of the input voltage, like if we supply 5v voltage, we will get 10 volt at the output. Generally transformers are there to step-up or step-down the voltage, but sometimes transformers are not feasible because of their size and cost. So here is the quick, easy and practical solution to double the voltage, using 555 timer… |
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RGB Bulb All the colors can be made from Red, Green and Blue color (RGB), these are the basic three colors from which we can generate any color. By varying the amount of these three colors, many colors can be generated. In case of light, we can produce any color of Light by using the three basic lights i.e. Red, Green & Blue and varying the intensity of these three light. So our… |
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555 Timer Bistable Multivibrator Circuit Bistable Multivibrator mode of 555 timer IC is the easiest mode of 555 timer IC, where Monostable multibrator mode has one stable & one unstable state, Astable multvibrator mode has both the unstable states, here in Bistable mode, both the states are stable. Means it remains in the same state (either HIGH or LOW) until an external trigger is applied; otherwise it stays… |
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555 Timer Astable Multivibrator Circuit Astable Multivibrator mode of 555 timer IC is also called Free running or self-triggering mode. Unlike Monostable Multivibrator mode it doesn’t have any stable state, it has two quasi stable state (HIGH and LOW). No external triggering is required in Astable mode, it automatically interchange its two states on a particular interval, hence generates a rectangular waveform.… |
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555 Timer Monostable Multivibrator Circuit Monostable multivibrator (MMV) mode of 555 timer IC is also called Single shot mode. As the name indicates, only one state is stable and the other one is called unstable or quasi stable state. 555 timer IC remains in Stable state until the external triggering is applied. An external triggering is required for transition from Stable to unstable state. 555 IC automatically… |
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2 Digit Object/Product Counter Object counters or product counters are important applications used in industries, shopping malls, etc. They count objects or products automatically and so reduce human efforts. In this tutorial we are going to design a simple object counter circuit without using any microcontroller. Components LM358 IC - 1 555 timer IC -1 Voltage… |
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Simple Digital Stopwatch Circuit Often we need stopwatch to differentiate the time of two events. Here in this tutorial we are going to design a simple digital stopwatch circuit, without using any microcontroller. Here we have used the popular 555 timer IC, CD4033 ICs and few other components, which are listed below. Required Components IC 4033 - 2 555 timer… |
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Toggle Switch Toggle switch is used to toggle the output between two devices. Means when one device is ON, second device remains OFF and when second device is OFF, first device becomes ON. This toggle of output can be controlled using a PUSH button switch, so you can control two devices using one button. Further you can interface two Relays in place of LEDs to control the two AC… |
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Digital Dice Circuit Dice can be used to play several games, such as Snakes and Ladders, Ludo, etc. Generally, dice are made of wood or plastic, which gets distorted over time and becomes biased. A digital dice circuit is an alternative to the traditional dice; it can’t be biased or distorted, and it acts so fast that nobody would be able to cheat. This guide will explain how to build a digital dice circuit… |
