The single-channel relay module is much more than just a plain relay, it comprises of components that make switching and connection easier and act as indicators to show if the module is powered and if the relay is active or not. The input pin is active low, meaning the relay will be activated when you pull the pin LOW and it will become inactive when you pull the pin HIGH.Ī relay is an electromechanical device that uses an electric current to open or close the contacts of a switch. On the other side of the module, there are three pins – a Ground pin and a VCC pin to power the module and an input pin IN to control the relay. This relay board lets you control one 240V power appliance directly from 5V. The channels are labeled for their function: common (COM), normally closed (NC), and normally open (NO). This is a small and easy to use 1 channel relay board that operates on 5V. We have three channels of the relay broken out to screw pin terminals. After learning to use the 5V 1-Channel relay component, you can use it to turn off lamps, fans, and other appliances up to 250 VAC. It is a bridge between Arduino and high voltage devices. It is used to programmatically control on/off the devices, which use the high voltage and/or high current. There are two LEDs on the relay module indicating the position of the relay. About Relay A relay is a programmable electrical switch, which can be controlled by Arduino or any micro-controller. Arduino IDE for Windows download link 1 Arduino IDE. It is module ready for easy Arduino project integration. Click to download: Datasheet ELEGOO DC 5V Relay Module - link 1 ELEGOO DC 5V Relay Module - link 2 - Google Drive Skip to content. It has a relay rated up to 10A per channel at 250VAC or 30VDC. It also has a optocoupler to interconnect two separate electrical circuits. ADIY 1 channel 5v relay module is designed for switching only a single high-powered device from your Arduino.
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