2. Relays are most commonly used switching device in electronics. Using a relay module with a different number of channels is similar. VIEW MORE 5. Very powerful and easy to use. The mains wiring is screwed to the terminal block, and the microcontroller can be connected using jumper cables. Name * Email * What’s new? IN1. // These data pins link to 4 Relay board pins IN1, IN2, IN3, // Initialise the Arduino data pins for OUTPUT, digitalWrite(RELAY1,LOW);           // Turns ON Relays 1, delay(2000);                                      // Wait 2 seconds, digitalWrite(RELAY1,HIGH);          // Turns Relay Off, digitalWrite(RELAY2,LOW);           // Turns ON Relays 2, digitalWrite(RELAY2,HIGH);          // Turns Relay Off, digitalWrite(RELAY3,LOW);           // Turns ON Relays 3, digitalWrite(RELAY3,HIGH);          // Turns Relay Off, digitalWrite(RELAY4,LOW);           // Turns ON Relays 4, digitalWrite(RELAY4,HIGH);          // Turns Relay Off, Previous Step: Making LED lights dance to your music, Zircon - This is a contributing Drupal Theme, NetSensor: Monitor your sensors from anywhere in the world. Description. These handy relay modules provide the easiest way to use your DuinoTECH to switch real world devices. You can also notice a diode connected across the coil of the relay, this diode is called the Fly back Diode. For demonstration purposes, let’s take a look at the pinout of a 2-channel relay module. Input 2: Connect to a digital output from your microcontroller, or leave unconnected if channel not used. Thanks Brian P.S. Then connect the signal pin of the relay module with the pin 12 of the Arduino. Input to activate the first relay. 8-Channel Signal Relay Module… The other parameter is your Load Voltage & Current, this is the amount of voltage or current that the NC,NO or Common terminal of the relay could withstand, in our case for DC it is maximum of 30V and 10A. V CC. Mains Voltage Connections. // You can here them click as there state changes from off to on and on to, // You will also see the corresponding Red LED on the 4 Relay board, //  define names for the 4 Digital pins On the Arduino. Wifi datalogger with 2 x temperature sensors, View the Graphs & download the data over wireless (Wifi), Robust Robotic platform for the hobbyists. The circuit which powers the coil is completely isolated from the part which switches ON/OFF, This provides electrical isolation. VIEW MORE 2. iMatic RJ45 Ethernet/Wi-Fi Control Board with integrated 16-Ch DC 12V Relay. Two way Control, wifi button + physical switch for Single AC device https://youtu.be/jqhb5d-uRZ4 Curious how to handle web pages in Arduino? Pin Number. How to use a Relay. Relays work on electromagnetism, When the Relay coil is energized it acts like a magnet and changes the position of a switch. $13.99. Pin 6 -----GND. Relay power +: Connect to the positive (+) le… Let’s have a look at the pinout of one channel relay module. Input to activate the second relay . 4 Channel 5V Optical Isolated Relay Module This is a LOW Level 5V 4-channel relay interface board, and each channel needs a 15-20mA driver current. 5. In setup function we have to set pinMode as output for all channel pins. KC868-H4, KC868-H2, KC868-H8, KC868-H32 controller are KC868 series of KinCony’s products, so phone APP and PC software are compatible. Then it’s a only a matter of just connecting the communication pins, labeled IN1, IN2, IN3 and IN4, two 4 data pinson the Arduino.In the example code below we used Arduino pins 7, 8 , 9, 10. This is the one I have bought. Make sure the load you are using falls into this range. GND. Usually you would expect opposite, but this way relay module consumes less current. 4. Let’s first discuss the pinout and pin configuration details of the 5V single channel relay module. 3V Relay, 12V Relay, 1-channel Relay module, 4-channel Relay Module. This is the reason we can control a relay using 5V's from an arduino and the other end of it could be running an 230V appliance, the 230V end is completely isolated from the 5V arduino circuitry. On the left side, there are two sets of three sockets to connect high voltages, and the pins on the right side (low-voltage) connect to the ESP GPIOs. IN2. 8-Channel-Relay-Module-Wiring-Pinout-Diagram-Optocoupler ← Previous; Next → Leave a Reply Cancel reply. The following figure shows the relay module pinout. Before we proceed with the circuit to drive the relay we have to consider two important parameter of the relay. Once is the Trigger Voltage, this is the voltage required to turn on the relay that is to change the contact from Common->NC to Common->NO. It can be controlled directly by Micro-controller (Arduino, Raspberry Pi, 8051, AVR, PI , DSP, ARM, ARM, MSP430, TTL logic). Packaging: Products Function: 1. A popular relay board that is available at the Chinese webstores is a 4 channel opto isolated relay module. The one you use will depend on whether you want the 5V signal to turn the switch on or turn the switch off. PI GPIO | Relay module. 4-channel 5V USB Relay Module. The above circuit shows a bare-minimum concept for a relay to operate. JD-V CC. VIEW MORE 2. Since the relay has 5V trigger voltage we have used a +5V DC supply to one end of the coil and the other end to ground through a switch. Explanation . It is equiped with high-current relays that work under AC250V 10A or DC30V 10A. It can be used to control various appliances and equipment with large current. This 8 Channel Relay module can adopt most common range of microcontrollers, such as Arduino, Raspberry Pi, AVR, PIC, ARM with digital outputs to control larger loads devices like AC or DC Motors, Electromagnets, Soleniod, Incandescent light bulbs, Actuators and any another devices that you want to drive with in the relay. 3V Relay, 12V Relay, 1-channel Relay module, 4-channel Relay Module. If connected to NO the load remains disconnected before trigger. The 4 channel relay module has two different types of electrical contacts inside – normally open (NO) and normally closed (NC). 1. I have just added a 4 Channel Relay Module to my collection of bits. 4 channel relay module reversed? The first to connections are the ground and power pins, You need to connect the Arduino +5v to the 4 Relay board VCC pin and the Arduino ground to the 4 Relay board … One Channel Relay Module Pinout. For demonstration purposes, let’s take a look at the pinout of a 2-channel relay module. Dual-Channel Relay Module Pinout. The board is both 3.3V and 5V logic compatible and uses 4 digital outputs to control 4 individual relays. This is a 5V 4-channel relay interface board, and each channel needs a 15-20mA driver current. There are only different input and output channel. This relay can handle 7A / 240 VAC, 10A / 125VAC, 10A / 28DV. So, connect the 5V and the ground of the Arduino with the 5V and the ground of the relay module. It is an active low pin, meaning the relay will be activated when you pull the pin LOW and it will become inactive when you pull the pin HIGH. As shown one end of the load can be connected to the Common pin and the other end is either connected to NO or NC. It is known as a single channel because only one relay is used and it operates on 5V. Input 4: Connect to a digital output from your microcontroller, or leave unconnected if channel not used. 6. Bluetooth Smartphone Relay with 4 Channel Outputs, 4 optically Inputs This is a TSIR04 Bluetooth version relay board with optically isolated inputs and OLED display and temperature sensor port. VIEW MORE iMatic RJ45 TCP/IP Remote Control Board with 8-Ch Relay. Mains Voltage Connections. The 4-Channel Relay Module is a full-height module that provides four relay outputs. Pin 10 -----IN3. How to Use a Relay. Pin Name. $36.99. It can be used to control various appliances and equipment with large current. Let us learn how to use one in our circuits based on the requirement of our project. Our relay here has 5V trigger voltage, but you can also find relays of values 3V, 6V and even 12V so select one based on the available voltage in your project. CN0136 . When you have something connected to the relays NO (Normally Open) connector and you set the corresponding IN pin to LOW (0v), power will flow in from the COMM connector and out of the NO connectorpowering your device.. Input ground reference. Let us learn how to use one in our circuits based on the requirement of our project. The four and eight channel versions even have optical isolation to protect your DuinoTECH. V CC. 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RJ45 TCP/IP Remote Control Board with Integrated 8-Ch Relay . The default state of the relay when the power is off for COMM (power) to be connected to NC (normally closed), this is the equivalent of setting the 4 Relay boards IN pin to HIGH (has +5v sent to it)  It is a safety feature to notuse the NC connector in-case you Arduino looses power it will automatically turns off all the devices connected to the relay. Using a relay module with a different number of channels is similar. Input 1: Connect to a digital output from your microcontroller, or leave unconnected if channel not used. 4 or 8 channel relay to wall switches ( on/off ) ( Read times... And then off this example, we will Connect the signal pin of relay.: wiring 4 or 8 channel relay module with the circuit which powers the coil is isolated... Wifi relay module connections for connecting the relay produced by the relay shows a bare-minimum concept for a to. 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