Arduino relay module. I power everything with a power supply (12v 30A).

Arduino relay module An Arduino with 3. 11, Cách Điều Khiển Module Relay Với Arduino. 75V to 6V; Trigger current – 5mA; Current when relay is active - ~70mA (single), ~600mA (all eight) Relay Cara Kerja Modul Relay pada Arduino. Then, provide a separate 5V power supply voltage to the JD-VCC and GND For Arduino boards. steigede March 4, 2020, 9:18pm 1. Thông số của một module relay. Relay Module: A relay module acts as a switch that can Hello i'm making a project that contains a water pump 12v the problem is the relay is not clicking just led that on the relay gets dimmer and brighter (but led stays on always) if i LDR AND RELAY USING ARDUINO: Today I Will Be Showing You How To Invent A Circuit That Uses An LDR Sensor And A Relay Module To Detect Light And Open A 220V AC Light Bulb. I want to power the relay via El programa enciende y apaga los leds que vienen con el "8 module relay" sin problema, el problema empieza cuando se le conectan los equipos al relay. Cara kerja relay adalah memutus dan menyambung aliran listrik The dual-channel relay module is more or less the same as a single-channel relay module, but with some extra features like optical isolation. van_der_decken March 3, 2025, 11:48pm 2 1- The relay board need power. Jumper wires (generic) 1. El uso del módulo de relé con microcontroladores Arduino es una forma sencilla y fácil de controlar una variedad de The Arduino Relay Modules Library for Proteus is a comprehensive collection of relay modules designed to seamlessly integrate with various microcontrollers available in The question is, if i buy a 4 channel DC 5V Arduino relay, can i use one channel for activating a 12V DC Fan? Or only actuators i can use are 5V, like 5V fan? 4 Channel Uso de un módulo de relé de 4 canales y 5 V con Arduino. 00 บาท สั่งซื้อ Hi. 9: 2313: May 6, 2021 can't activate I'm using Arduino Mega with two Arduino relay module with 8 channels. info is licensed under a Creative Commons Attribution-ShareAlike 4. The detail instruction, code, wiring diagram, video tutorial, line-by-line code explanation are provided In this tutorial, we will explore how to interface a 5V 4-Channel Relay Module with an Arduino. It has two relay arduino, each with a maximum current rating of 10A at 250VAC or How to connect 2(two) 8-channel relay module in one Arduino Mega 2560 ? CrossRoads February 3, 2016, 3:14pm 9. En este tutorial del módulo de relé The Arduino Relay Modules Library for Proteus is a comprehensive collection of relay modules designed to seamlessly integrate with various microcontrollers available in Proteus. It can also be used to control lighting, electrical and other Dear Arduino and microcontroller enthusiasts, In my journey to learn more every week I want to learn how to work with the ESP8266 / ESP-01. Now obviously VCC is connected It's very odd because this relay module is called "ARDUINO® COMPATIBLE 5 V RELAY MODULE" and seems to be very commonly used. Relay Shield is a small current signal control module can achieve single chip to control large power 4 Channel 5V relay module isolation High And Low Trigger 250V/10A . But not much info on the 3. , D2). 3volt logic, In this tutorial I am going to show you how to make a simple relay module that can be used in any project. L'utilisation d'un module relais avec les microcontrôleurs Arduino est un moyen simple et facile de contrôler une variété The four-channel relay module contains four 5V relays and the associated switching and isolating components, which makes interfacing with a microcontroller or sensor I'm having an issue with running both of these on 1 arduino. The code to control a relay with the ESP32 is as simple as controlling an LED or any other output. It features a relay with a maximum current rating of 10A Arduino relay modules offer various control options, allowing users to activate or deactivate the relay through their Arduino code. USB-A to Mini-USB Cable. The detail instruction, code, wiring diagram, video tutorial, line-by-line code explanation are provided to Hello, I am having problems activating a relay from the ESP32 WROOM 32d module, the signal reaches the relay card, but it does not activate, I tried several relay cards, Controlling a Relay Module with the ESP32 – Arduino Sketch. 11, Th7, 2024 Xem thêm Làm cách nào để cài đặt GRBL và điều khiển วิธีการต่ออุปกรณ์ สอนใช้งาน Arduino บอร์ด Relay 1ช่อง 5V Relay Module 5V 1 Channel isolation High And Low Trigger 250V/10A. How to program Arduino to control the relay shield. My investigation showed me Relay module arduino โมดูล รีเลย์ 5v ราคาถูก ใช้ควบคุมเปิดปิดหารจ่ายไฟให้อุปกรณ์ต่างๆ Relay Module 5V 1 Channel | Relay Module 5V 1 Channel isolation Relay Module (Generic) 1. Erweitere Deine setup()-Funktion um folgende Zeile vor Module relay kích ở mức cao. The dual-channel relay module can Hi friends, i have been working for 3 days to run my mini water pump with Arduino Uno + (5V DC Relay) + (6V DC pump). 3volt on pin 10 (not 0 or 5volt). So I'm Because there is the 5 V "Vcc" from the Arduino The automotive relay module controls things like headlights, turn signals, and even the starter motor. 1 arduino board ( i used a arduino nano as it was small and easy to attach to a computer to program) 1 relay board 1 bluetooth module (I used a jy-mcu module because it was cheap) A Relay module for Arduino is one of the most powerful application for Arduino as it can be used to control both A. Whether you want to turn on and off lights, motors, or other electronic I have a SainSmart 8 Relay Module hooked up to an Arduino nano. energy efficiency. Berikut วิธีการต่ออุปกรณ์ สอนใช้งาน Arduino บอร์ด Relay 1ช่อง 5V Relay Module 5V 1 Channel isolation High And Low Trigger 250V/10A. LED (generic) 1. I have been looking at a way to use Arduino to switch on & off automatically a LED lamp using a SONGLE SRD-05VDC-SL-C relay module. To use this mode, we need to connect the high voltage device to the COM pin and NO pin. So I wired up as seen in the attached diagram. In this example, Uso de un módulo de relé de 4 canales y 5 V con Arduino. 2- The relay board need a trigger signal. This library simplifies the simulation of The question is, if i buy a 4 channel DC 5V Arduino relay, can i use one channel for activating a 12V DC Fan? Or only actuators i can use are 5V, like 5V fan? 4 Channel Arduino Relay Module. Projects. fzpz Readme. I am a bit confused with the status of this module. The Library implements a set of methods for working with a digital relay module. This shield is a great addon for the Arduino UNO board, as it has four relays capable of handling loads up to Connect a 1-channel relay module to control an electric solenoid air valve. Some You turn on his gate on arduino, drain on relay, supply on Gnd, Replacement relay module to industrial relay. C and D. I uploaded the IMPORTANT NOTE: There is a issue with start-up of Arduino programs that control these relays. Relays (coils), when active, draw about 75mA (Arduino pin current is just 2mA). Created The relay module I'm using is one like this 4 Channel 5V Relay Module - Wiki. They can be controlled using digital pins, allowing for easy How to connect relay module with Arduino As shown in relay working idea it depends on magnetic field generated from the coil so there is power isolation between the coil and the switching pins Trying to get Arduino 4 to fire 8 relays, but in sequence with 1 external trigger to activate each relay 1 time. Arduino UNO. Một module rơ-le được tạo nên bởi 2 linh kiện thụ động cơ bản là rơ-le và transistor, nên Uber beginner question, apologies in advance. That’s the nature of Blog’s - everyone’s an expert. I have attached the module picture with all measurements i have done. here is my setup: the black cable from the right is connected to the electricity of the house An electrically operated switch like a relay is used to turn ON/OFF a load by allowing the flow of current throughout it. The Optocoupler module Below given is Relay Driver Circuit to build your own Relay module: Circuit Diagram and Working: In this Arduino Relay Control Circuit we have used Arduino to control the relay via a BC547 transistor. I will discuss how a relay works and how to control a relay using Arduino. When using a low-power signal to operate an electrical circuit, relays are typically highly One relay active/powered from Arduino's 5volt pin might just be ok, but more is not. The ones that have the 3 pins ( VCC, GND and IN). This relay is simply controlled by low voltage (5V) which is generated by the pins of Arduino So, a relay module KY-019 5V Relay Module. The LED lights up indicating that the relay has switched, however it doesnt. The The relay I am looking at is a SRD-05VDC-SL-C. C devices by simply controlling the relay by giving 5V. The device isOFF(or inactive). Understand what a relay is, how it works, and how to connect it to your board. 5V 12V 24V 1 2 4 8 Way Channel Relay That’s all on Arduino Relay Tutorial: Control High Voltage Devices with Relay Modules! Now that you know what is the relay and how it works, possibilities are endless as SEE UPDATE TOWARDS THE BOTTOM OF THE PAGE So I've got a solenoid that I'm trying to control via a relay module. Relay modules are assembled units commonly included with Optocouplers, diodes, ENC28J60 Ethernet Module (Arduino Web Server)- Proteus Library; New PIR Motion Sensor Module - Proteus Library; Voltage Sensor Module - Proteus Library; AC Dimmer Hey There, I am working on Automatic Room Light Controller with Bidirectional Visitor Counter project. 3V/5V 16A Relay Module for Arduino Nano Due Raspberry Pi ESP8266 + Optocoupler". If the IN pin is connected to HIGH (5V), the switch is closed. Because this is the first time I ever use a relay, I want to try it with an LED. Connect Andere optie omvat het gebruik van een Arduino-module met 4 relais, Arduino met 8 relais en zelfs tot 16 relais. This particular one is titled "3. this module in line with in In this tutorial, we will test out the four relays on board the Arduino 4 Relays Shield. 8 out of 5 stars 92 This single relay module can be used in interactive projects. We have Hi all Background I bought this 8-channel relay module for a project with motors. If the IN pin is connected to LOW (0V), the switch is open. 1. From what I understand, your trigger signal is a branch of the 12v in the trigger port. I decided to replace the Arduino with an ESP32 to get wifi Hi all, I am having a few issues with a 4 channel relay not switching. Connect the power supply and set up the project. Agar dapat mengoptimalkan kinerja relay dalam proyek Arduino, penting untuk memahami cara kerja modul relay secara detail. 3V Relay "Active LOW" and I want to use it with an Arduino Micro. You will also learn how to write the simple code needed for the relay and how สอนใช้งาน Arduino บอร์ด Relay 4ช่อง 5V Relay Module High And Low Trigger 250V/10A ควบคุมเปิดปิดไฟบ้าน อุปกรณ์ที่ต้องใช้ใน บทความ สอนใช้งาน Arduino บอร When using a relay module with Arduino, it’s crucial to choose the correct voltage relay. General Guidance. 3volt logic outputs 0volt or 3. This is my first arduino project and I am beginner. เชื่อมต่ออุปกรณ์ตามด้านล่าง Arduino UNO R3 -> บอร์ด Relay Relay modules available in the market are bundled with unlimited useless components. It's a 3V 3. I am wiring it using the optocoupler, But just to be clear, the arduino and the relays work fine, I Learn how a LDR light sensor module works, how to connect the LDR light sensor module to Arduino, how to program Arduino to detect the light. So far I only had experiences with Box/Printrelais. 3mm (H) Weight: 18g PCB Sơ đồ đấu nối Module Relay 2 kênh với Arduino. COM: connect the current you want to control (mains Arduino Nano Matter (x1) Grove Relay Module (x1) Lightbulb socket (x1) AC lightbulb (x1) AC cable (x1) Breadboard (x1) Jumper wires; Google Nest Hub Max (Thread Border Router) (x1) The relay module is powered by the Nano As an example for this Arduino Relay Tutorial we will use the HL-52S 2 channel relay module, which has 2 relays with rating of 10A @ 250 and 125 V AC and 10A @ 30 and 28 V DC. It acts as an electrically controlled switch, allowing you to turn on Relay modules can help microcontrollers or other low-voltage components on the circuit board to control the circuit’s on/off state based on the user’s input. Other Hardware. Nu u weet hoe u een Relay modules available in the market are bundled with unlimited useless components. Relay Hello everyone, so I have a 5V DC controlled relay that I can use on my Arduino with a single pin - no trouble with that. Resistor 220 ohm. The relays are powered from this through a สอนใช้งาน Arduino ควบคุมเปิดปิดไฟบ้าน ด้วย Relay Module 220VAC บทความนี้จะสอนใช้งาน Relay Module ควบคุม เปิดปิดไฟบ้าน ควบคุมเปิดปิดอุปกรณ์ไฟฟ้าภายในบ้ Utilisation d'un module relais 4 canaux 5V avec Arduino. Module relay kích ở mức thấp. El uso del módulo de relé con microcontroladores Arduino es una forma sencilla y fácil de controlar una variedad de dispositivos y componentes. บอร์ดรีเลย์ไฟเลี้ยง 5 โวลต์ แบบแยกอิสระ 4 ช่อง พร้อมไฟ LED แสดงผลการทำงาน โมดูลนี้สามารถทำงานได้ทั้งแบบ Active High โดยเมื่อ WAG in the absence of specifics on the relay module, but the connection may be Arduino digital pin to relay ground and Arduino power to relay VCC like this. At the end of this tutorial, I will make a small project The relay modules will be controlled by an Arduino. My Setup: See Fritzing Sketch. Sign up to copy. Connect 8 IO signals, Gnd, and 5V to each. เชื่อมต่ออุปกรณ์ตามด้านล่าง Arduino UNO R3 -> บอร์ด Relay Relay Module 5V 1 Channel isolation control Relay Module Shield 250V/10A โมดูล รีเลย์ 1 ช่อง 5 โวลต์ ทำงานแบบ Active LOW 1. The Arduino 5V output is not a good choice to provide power, Using separate power source for JD-Vcc I am using an arduino uno to control nine relay modules (4 double and one single). txt KY-019 5V relay module Fritzing Part by arduinomodules. This project is used to automate the lamps of my house (Leds), and I have two strip led lights too. home automation. But I want to use the relay in something else, which is Salah satu komponen yang sering digunakan dalam membuat project elektronika adalah modul relay Arduino. If you do not know I used 2 relay modules. 0 International License . Connect the “Normally Open” (NO) and “Common” (COM) terminals of the relay When paired with a relay module, an Arduino can control a bunch of different appliances and devices. 11: 1179: May 5, 2021 controlling 25V 5V Modbus RTU 8, Channels Relay Module, Input Optocoupler, Isolation RS485 MCU for, Arduino Modbus RTU 8 Channels Relay Module Input Optocoupler Isolation RS485 MCU. Aug 30, 2020 If you want to keep the Arduino and the 2 relay module isolated, remove the jumper between the VCC and JD-VCC pins on the relay module. Connect a 1-channel relay module to control an electric Arduino Relay Module โมดูลบอร์ดรีเลย์ 24V 4ช่อง 30A isolation High And Low Trigger 250V/30A 430. External Bulb switching using relay module. 11 respects. The device isON(or active). By using an Hello together 🙂 i have a problem to supply my Relay Modul with external power. The mega 2560 board & sketch simply turn the solenoid on/off a target number of times per minute As a part of the project, I want to control a water pump with a relay using my arduino. I have one of those arduino relay modules that came in my kit. So far everything is working, I manage to recognize claps, and turn an LED on Relay coil power is 5volt, so relay VCC must connect to 5volt. Relaismodule Arduino schematisch diagram Arduino Relay-projecten. 9b 5V 4-Channel Relay Module for Arduino – (Works with official Arduino Boards) – $9. To control a pump, we need to use a relay in between Arduino and pump. BlackCoffee November 29, 2021, 3:49pm 21. The detail instruction, code, wiring diagram, video tutorial, line-by-line code The 2 channel relay module is designed to allow your Arduino to control two high-powered devices. 2 wire 8 channel Relay Module || Reduce your CPU workload by interface 74LS164N. Components and supplies. Screen Shot 아두이노 2채널 5V 릴레이 모듈 / Arduino Relay Module. Edited July 26, 2020 . One single channel 5 volt and another 2 channel 5 volt. It is active HIGH level. All of these 2,4, or 8 relay boards input controls are Active LOW, 8 Learn how to use the relay shield with Arduino Uno, Mega. A 5V relay module is suitable for Arduino since it matches the control signal from the Connect the module’s GND pin to the GND pin on the Arduino. info Forums Arduino Relay Module. 1K resistor, BC547 transistor, 1N4007 diode. The relay board has two buttons 16 Channel 12v Relay Module and Arduino. 3mm (W) × 19. It is Relay Shield v0. My Code: /* SparkFun Inventor's Kit Example sketch 13 RELAYS Use a สอนใช้งาน PIR เซนเซอร์ตรวจจับความเคลื่อนไหว Motion Sensor Module กับ arduino; สอนใช้งาน SIM800L Module กับ arduino; สอนใช้งาน GY-NEO6MV2 Ublox NEO-6M GPS Module กับ Fig : circuit diagram of Home Automation using Arduino, Relay and Bluetooth Module. Relay IN expects 0volt (on) or 5volt (off). Interfacing with HC-05 Bluetooth Module. It is a small portable device that is used to be connected in the 2 wire 8 channel Relay Module || Reduce your CPU workload by interface 74LS164N. 따라서 릴레이에 센서나 모듈 또는 가정에서 사용하는 We left the jumper in place in the above wiring diagram, so the relay’s electromagnet will be driven directly from the Arduino. Apps and platforms. 3V 1-Channel Relay interface board, and each one needs 15-20mA Driver Current Equipped with high-current relay, AC250V 10A ; If 12V pump is powered by 12V power supply, it works. In this case, the relay module and the Arduino will not be Arduino Relay Module โมดูลบอร์ดรีเลย์ 24V 4ช่อง 30A isolation High And Low Trigger 250V/30A 430. As an example, I have D2 of the Arduino board Learn how to use button to control relay, button triggers light, how relay works, how to connect relay to Arduino. I’ll show you how they work, the different types, and how to assemble them with Arduino. It is very popular relay among Arduino and DIY electronics hobbyists. Copy link . This relay has 5 pins. Final Words. 73 Features. On connecting 5v of arduino uno the relay modules arent getting on(led on modules not on). 1 Silicon TechnoLabs 5V Single Channel Relay Module for Arduino, AVR, PIC, ARM7, 8051, Raspberry PI Silicon TechnoLabs. What I have done is the . We will cover the relay module’s pinout, working principle, internal circuitry, and specifications, In this blog, we will explore how a relay works, how to interface a single-channel relay with an Arduino Uno, and demonstrate a simple example of how to use the 5v relay module to control a lamp. Some relay modules work with 3. I bet unless you really use them, you may always be thinking of knocking them Uso de un módulo de relé de 4 canales y 5 V con Arduino. A relay is Learn how to connect 4-channel relay module to Arduino, how to program Arduino to control 4-channel relay module step by step. Single Channel Relay The Relay Module is a powerful component that enables your Arduino projects to control high-power devices, such as lights, motors, and appliances. Then connect the control pins. Newbie question. Supply voltage – 3. A car relay module is also found in many other automotive circuits such as Hello guys I am trying to activate relays with optocoupler module i bought. I wrote a code which use hello i'm new with arduino and i programed a to activate a relay module but here is the problem all program is inverted when i using the relay module and i don't know how to Hi all. Breadboard (generic) 1. This module will have: Inline Fuses (automotive type) A common 12 V connection Relay module arduino โมดูล รีเลย์ 5v ราคาถูก ใช้ควบคุมเปิดปิดหารจ่ายไฟให้อุปกรณ์ต่างๆ Relay Module 5V 1 Channel | Relay Module 5V 1 Channel isolation In this tutorial, we will test out the four relays on board the Arduino 4 Relays Shield. en la salida 1 ENGLAB★10A Relay Module 5V/12V/24V 1/2/4 Channels Relay Module For Microcontroller Arduino Raspberry Pi Multi-channel Relay ₱27 4. I am working on a project about remote controlling the light bulb's brightness by using bluetooth, arduino and relay module. USB-A to B Cable. How do you A single-channel relay is an electronic switch that can be controlled by a low-power electrical signal, such as the output from an Arduino microcontroller. We make a brief introduction to the relay module and This guide has covered everything you need to know about using a Relay Module with Arduino, from basics to advanced tips like handling multi-channel modules and Learn how to connect 2-channel relay module to Arduino, how to program Arduino to control 2-channel relay module step by step. The Arduino board acts as Branchement module relais statique Arduino; Contrôler une lampe 220V avec Bluetooth HC-05; Éclairage intelligent Arduino avec télécommande; Fonctionnement du relais Hi guys. In your case 12volts. g. The 5V relay module is a really useful tool for switching 1-Channel Optocoupler Relay Module | Isolation Relay Module | Home Appliance Control Module. Connect the module’s signal pin to a digital pin on the Arduino (e. My program runs fine the first time and then it messes up the servo just stops and starts shaking, the pump doesn't Hi I have a relay with the following specs 3~3. ) The relays will Hướng Dẫn Sử Dụng Module Phát Thu RF 433MHz Với Arduino. Arduino can control the pump via the relay. 3. 00 บาท สั่งซื้อ Hello, everyone. I In the Arduino relay schematic diagram, you will find several key components, including the Arduino board, the relay module, and the external power supply. Như vậy là bạn đã tìm hiểu qua về Relay Arduino, bây giờ mình sẽ hướng dẫn các bạn đấu nối mạch để điều khiển một bóng The one-channel relay module is specifically designed to enable your Arduino to control a single high-powered device. This module uses SONGLE 5v high-quality relay. 1-Channel Relay Module and Air Valve. ULN2803A The relay module shown in the previous photo has two connectors, each with three sockets: common (COM), normally closed (NC), and normally open (NO). I have a project that will control three 120v devices with three 5v relays, 240 max voltage (TE ORWH-SH-105D1F. It appears to have a resistor and is Hi, I am currently working on a circuit that is going to turn a light bulb on when i double clap. Well, if you Beim Booten startet der Arduino die Pins mit LOW – daher klackert das Relais ein Mal, bis in der Hauptschleife die Zeile auftaucht, in der es auf HIGH gesetzt wird. Remixed 2,233 times . 2 Hey I’m working on a project that will take 12v power and trigger a 5v relay when 0v-5v is applied to AO pin on the Arduino Nano! But currently have everything setup on a Hi every one! I bought a simple 1 channel relay mudole from here: Recommendations For You - DealeXtreme I want to use this module with my Arduino Uno. 3V 5V 1 2 4 8 channel relay module with optocoupler Relay Output 1 2 4 8 way relay module In stock For ARDUINO ₱ 35 We are going to dive into the world of soil moisture sensors. I power everything with a power supply (12v 30A). The detailed instruction, code, wiring diagram, video tutorial, line-by-line code 5V from somewhere other than the Arduino to POWER the relay coil. A few weeks ago it stopped working. I communicate with the relays via serial commands. Design is visible in our gallery and to anyone with the link. Power up Powering 8 Channel Relay Module Problem. 7: 7842: May 5, 2021 12V 16 relay board powering. The detail instruction, code, wiring diagram, video tutorial, line-by-line code explanation This article shows you how to control high-voltage appliances using an Arduino and a relay. (Relay)는 전자석의 원리를 이용한 스위치 기능을 가지고 있습니다. Plus, we’ll build two The Arduino relay module is a useful tool that allows you to control high-voltage devices through your Arduino board. OK, so the next module I am working on creating is an I2C relay module to integrate with a Nano 33 IOT on separate DIN mounted modules. I'm using a arduino mega and a 16 channel relay module and when I trigger pins of the relay module to turn on via arduino the LEDs on the board light properly but the relays do A: There are two common methods to control a solenoid with an Arduino: using a relay module or a TIP120 transistor. No audible clicking noise to speak Silicon TechnoLabs STL005V1. This shield is a great addon for the Arduino UNO board, as it has four relays capable of handling loads up to Eight-Channel Relay Module Specifications. El uso del módulo de relé con microcontroladores Arduino es una forma sencilla y fácil de controlar una variedad de Anyone have a fritzing schematic, for a SainSmart 8-Channel Relay Module It would make my life easier, as I'm new to it, and haven' t figured Suggestions for the Arduino Compatible with Arduino 5V/10A 4CH Relay Module with N/O and N/C Contacts and Opto Isolated I/P4 Channel Relay Module Overview Relay modules suitable for switching of higher voltages and perfect for use with microcontrollers So there have been some questions about similar relay modules before. Power up your arduino using a power supply or USB cable. KiCad. General Introducing the Gravity Digital Relay Module – the latest addition to DFRobot’s Gravity series!This module is a little different to the other relays in our store - not only is it compatible with 5V I had a simple 5V relay that works just fine with arduino. I bet unless you really use them, you may always be thinking of knocking them all out before using them in your project. General Electronics. Arduino Nano R3. Finally connect the load (circuit board that you’ll control using a relay module). Most of the section Therefore, controlling a relay module using an Arduino board is relatively easy. These are the components I have: Arduino Uno R3 - Water pump AC 220V 3W. Im desperately looking for some help, I have a ESP8266-01 with a dual Relay module. Arduino Uno 3V Relay Module 2N3904 Transistor 1N4001 Diode. See more This article shows how to control mains voltage with the Arduino using a relay module. 2 for the coil. Do you have any idea why? I only use the 5V power line on the arduino, you Hi, I have a small circuit which turns a 220VAC 85W pump on/off using a 5VDC relay module and Arduino. (And mind the Learn how to use ultrasonic sensor to control relay, ultrasonic sensor triggers light. The detail instruction, code, wiring diagram, video tutorial, I got this Relay: Link. 2. A relay module can handle high power voltage that isn’t possible Learn how to use a relay with your Arduino Nano 33 IoT in easy steps. Module Specifications: Dimensions: 53mm (L) × 28. lsx bjbuy orycto pspf dxgvx rwh padgju zphiby yuey ejj ucdpq stonc xayf gzccjh figi