In this project, we are going to show you how to make a wireless circuit using LDR, LMop-amp IC and decade counter IC. This change in voltage is sensed by Op-amp and this will in turn control IC output which is connected to the AC light through Relay Module. controlled by means of switch- es, sensors, etc. However, physical contact with switches may be dangerous if there is any shorting. The circuit described here. This Wireless Switch Mini Project can be used as final year mini project. During the interruption, the relay will be active and connected to 5v.

Wireless Switch Mini Project Pdf

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Working of Wireless Switch Circuit using CD Using this circuit, you may operate any electrical appliance by just passing your hand above LDR. It is the big collection of ideas to do some innovative project, to make something new. I believe this Book will be helpful for the students for their mini project. Battery Charger with Automatic Switch-off Here is a low-cost and simple wireless stepper motor controller using infrared signals. WIRELESS SWITCH CIRCUIT CONTROL SYSTEM INTRODUCTION It will . riapeocaconcou.ml project riapeocaconcou.ml

Wireless Light Switch

Working is explained further below in this article. An operational amplifier IC is used as a comparator which compares the two signal, the inverting and non-inverting signal.

The main function of this IC is to do the mathematical operation in various circuits. Learn more about Op-amp here.

It can produce output at the 10 pins Q0 — Q9 sequentially, means it produces output one by one at the 10 output pins. After the Q9, it will start from the Q0 again.

Go through CD circuits to learn more about this IC. And here is one simple application of Toggle switch to understand the working of to latch the output. Now the light remains in OFF state until the next clock pulse, which will be generated when we again put the hand over LDR.

Now here is the trick, we have fed the Q2's high output to the reset pin 15 of IC, which resets the IC and put the IC in default mode where Q0 will be high. So again Light will get turn on with Q0 high.

To prevent it from misbehaving or remove error in counting pulse because of bounding effect, we have used RC circuit using the capacitor of 22uf and 10k resistor at Clock PIN 14 of IC, which helps it to count only one pulse on each time hand passes over the LDR. What happens in a dark room at night. I cant see how waving your hand across the LDR would turn the light on and off if the ambient light in the room is dark all the time.

It seems to me that as your circuit stands at the moment, it will only work in daylight so you can create a dark situation by covering the LDR to make the circuit switch, and then uncovering the LDR to make it switch again. In this project, I will show how to operate any electrical without making physical contact with switch by implementing a Wireless Switch Circuit using CD IC. But in this project, I will show an interesting way to control any device like a Light Bulb for example.

Electronics For You

The method implemented here involves a Wireless Switch Circuit where when you slide our hand in front of the circuit, the device like Lamp will be turned ON and if you slide you hand once again, the device will be turned OFF. Using this simple Wireless Switch Circuit, you can avoid the dangers of having physical contact with the switches. Related Post: The following image shows the circuit diagram of the project.

The design of the circuit is very simple. First, connect a voltage divider using either two resistors or a potentiometer to the Inverting terminal Pin 2 of the Op-Amp LM Rest of the connections with respect to power supply are self explanatory. In place of two fixed resistors that are connected to the Inverting Input of the Op-Amp, you can connect a Potentiometer and vary the sensitivity of the circuit.

It is very simple to understand the working of the circuit. The circuit mainly depends on two ICs. First one is LM, which is an Operational Amplifier.

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Now, as soon as someone passes their hand over the LDR, Pin 3 of the Op-Amp will be at a higher voltage when compared with the Pin 2 and as a result the Pin 6 will become High for a moment. As this Output pin of CD is connected to the input of the relay, the lamp connected to the relay will be turned ON.

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Do we have to supply Ac source to relay.The article is presented exactly for this purpose. In place of two fixed resistors that are connected to the Inverting Input of the Op-Amp, you can connect a Potentiometer and vary the sensitivity of the circuit.

Resistor Resistor is a passive component used to control current in a circuit. Can anyone help?

Sonoff sends data to cloud platform through the WiFi Router, which enables you to remotely control all appliances with the App eWeLink on your smart phone. The 9, 13 pins of the IC works as the set and reset contacts respectively.

The components needed for the circuit can be obtained easily and the circuit is easy to design.

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