relay

Relay Interfacing

Relay Interfacing with PIC Microcontroller

In this project we will interface a Relay with PIC Microcontroller PIC16F877A. Relay is a mechanical device to control high voltage, high current appliances ‘ON’ or ‘OFF’ from lower voltage levels. Relay provides isolation between two voltage levels and it is generally use to control AC appliances. From mechanical to Solid state relays, there are various type of relays are …

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Interfacing Relay circuit

Interfacing Relay with PIC Microcontroller

To control our high voltage device like home appliance by pic microcontroller, we have to have clear idea on interfacing relay with pic microcontroller. Here I try to answer your very important question with simulation that how to interface relay with pic microcontroller? To discuss it elaborately I have to discuss what is relay? How it work? …

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Switch Relay1.

Switch Relay using pic-microcontroller

INTRODUCTION: The Switch Relay was designed to give clients control over two different switch-activated devices using only one switch. Pressing and releasing the switch will directly control the first device. However, when the client presses the switch for a minimum duration of time, the device toggles its state so that the switch now controls a …

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Security Alarm Circuit

PIC12F675 Microcontroller Based Security Alarm Circuit

Crime in general is still on the rise, and having a security alarm installed is no longer a perquisite of the wealthy! Here is a simple and compact security alarm system to protect your home/shop and valuables. The circuit is built around a tiny microcontroller chip PIC12F675. Besides, a ready-made Passive Infrared (PIR) module is …

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DTMF Controlled Home Automation System Circuit

DTMF Controlled Home Automation System Circuit Using Atmega

Generally, appliances used in our home are controlled with the help of switches. These days, you can see automation of these appliances using many technologies. This article presents the controlling of home appliances using DTMF technology. DTMF is acronym for Dual Tone Multi Frequency. So, just think when you make call for customer care, they will …

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