Relay
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Arduino Whistle Detector Switch using Sound Sensor As a kid I was fascinated by a toy music car which gets triggered when you clap your hands, and then as I grew up I wondered if we can use the same to toggle lights and fans in our home. It would be cool to just turn on my Fans and lights by just clapping hands instead of walking my lazy self to the switch board. But often times it would malfunction as this circuit will… |
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MQTT Based Raspberry Pi Home Automation: Controlling Raspberry Pi GPIO using MQTT Cloud In previous tutorial we have discussed about MQTT Protocol and installed local MQTT server on our Raspberry Pi for controlling the GPIO locally. But the drawback of local MQTT server is that we cannot control the GPIOs from anywhere in the world, it only provides services locally. But if this MQTT server is hosted on some cloud then any appliances connected to Raspberry Pi… |
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IoT controlled Home Automation using Raspberry Pi and Particle Cloud Raspberry Pi is one of the most famous low cost computer and powerful tool for prototyping different types of IoT and embedded projects. With the popularity of Raspberry pi in the IoT domain, Particle cloud started support for this board on its platform. Particle Cloud is a very popular IoT platform which can help you to start with everything that… |
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Control Home Lights with Touch using TTP223 Touch Sensor and Arduino UNO In some applications, user input is required to control the functions of a device. There are different kinds of user input methods used in the embedded and digital electronics. The touch sensor is one of them. Touch sensor is an important and widely used input device to interface with a microcontroller and it has made inputting data simpler. There are individual places where… |
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Controlling Light using Touch Sensor and 8051 Microcontroller In modern electronics world, touch input is used almost everywhere, whether it can be a mobile phone or an LCD monitor switch. Capacitive touch is the widely used in the touch sensor segment and we previously used capacitive touch with a Raspberry Pi. Here in this project, we will interface touch sensor with 8051 microcontroller AT89S52. If you are new to 8051 microcontoller… |
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IoT based Web controlled Home Automation using PIC Microcontroller and Adafruit IO Home Automation has always been inspiring projects for most of us. Toggling an AC load from the comfort of our chairs or bed of any room without reaching for the switch in another room sounds cool doesn’t it!!. And now in the era of IoT, thanks to the ESP8266 module which made it easy to control anything from anywhere in the world. In this… |
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High Current Photorelays in DIP4 Package Features low ON-state resistance and high ON-state current ratings for easier use
Toshiba introduced two new high current photorelays, fabricated using the latest U-MOS IX semiconductor process. The new “TLP3553A” and “TLP3555A” devices has OFF-state output terminal voltage ratings of 30V and 60V, and ON-state… |
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24V Flasher Circuit Different Electronic systems operate in different level of voltages. Most commonly the digital electronic systems like microcontrollers and microprocessors operate in 5V or 3.3V. Industrial Level Control devices like PLC, HMI etc. have an operating voltage of 12V, 24V etc. The loads (LED indicator) and sensors, that are used to interface with a PLC, also have a nominal… |
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DIY Arduino Relay Driver Shield In this DIY project we make a 3-Channel Arduino Relay Shield Circuit for relay based applications. We designed an isolated PCB for 3 relays. By using this Arduino Relay Shield, we can operate 3 AC appliances at a time. We have put a two pin screw terminal blocks (Neutral, NO) for connecting appliances. Here we have provided PCB layout, circuit… |
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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… |
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Arduino RFID Door Lock You have seen RFID Door Lock Mechanism in some Hotels and other places, where you don’t need a key to unlock the room. You are given a card and you just need to put it in front of a RFID Reader box, and the lock gets unlocked with a Beep and a Blink of LED. This RFID Door Lock can be made easily at your home and you can install it in any door. These Door lock is… |
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Arduino Light Sensor Circuit using LDR We all want our home appliances to be controlled automatically based on some conditions and that's called Home automation. Today we are going to control the light based of darkness outside, the light turns ON automatically when it is dark outside and turns off when it gets bright. For this, we need a light sensor to detect the light condition and some circuitry to control… |
