Overview
The Arduino 4 Relays Shield is a solution for driving high power loads that cannot be controlled by Arduino's digital IOs, due to the current and voltage limits of the controller. The Shield features four relays, each relay provides 2 pole changeover contacts (NO and NC); in order to increase the current limit of each output the 2 changeover contacts have been put in parallel. Four LEDs indicate the on/off state of each relay.
Getting Started
You can find in the Getting Started section all the information you need to configure your board, use the Arduino Software (IDE), and start tinker with coding and electronics..
Need Help?
- On the Software on the Arduino Forum
- On Projects on the Arduino Forum
- On the Product itself through our Customer Support
Tech specs
Features
| Thinker Kit interface | 2x TWI, 2x OUT, 2x IN |
| Interfaces with Arduino Board | DIO |
| Relays | 4 (60W) |
General
| Operating Voltage | 5 V |
| Current needs | 140 mA (with all releays on, about 35 mA each) |
| PCB Size | 53 x 68.5 mm |
| Weight | 0.044 Kg |
| Product Code | A000110 |
Conformities
Resources for Safety and Products
Manufacturer Information
The production information includes the address and related details of the product manufacturer.
Arduino S.r.l.
Via Andrea Appiani, 25
Monza, MB, IT, 20900
https://www.arduino.cc/
Responsible Person in the EU
An EU-based economic operator who ensures the product's compliance with the required regulations.
Arduino S.r.l.
Via Andrea Appiani, 25
Monza, MB, IT, 20900
Phone: +39 0113157477
Email: support@arduino.cc
Documentation
OSH: Schematics
The Arduino 4 Relays Shield is open-source hardware! You can build your own board using the following files:
EAGLE FILES IN .ZIP SCHEMATICS IN .PDF
Description
|
Operating Voltage |
5V |
|
Coil current consumption |
140 mA (with all releays on, about 35 mA each) |
|
Single pole chargeover contact maximum current |
@ 30 V DC 2A |
|
Maximum load voltage |
48 V |
|
Maximum switching capacity |
60 W |
Power
The shield doesn't need external power: it will be provided by the base board, through the 5V and 3.3V pins of the Arduino board used as base.
Input and Output
The relays are controlled by the following Arduino board pins: Relay 1 = Arduino pin 4 Relay 2 = Arduino pin 7 Relay 3 = Arduino pin 8 Relay 4 = Arduino pin 12 The shield features several TinkerKit input/output and communication interfaces. Connecting TinkerKit modules can simplify the creation of a project or a prototype. The on-board connectors are :
- 2 TinkerKit Inputs: IN2 and IN3 (in white), these connectors are routed to the Arduino A2 and A3 analog input pins.
- 2 TinkerKit Outputs: OUT5 and OUT6 (in orange), these connectors are routed to the Arduino PWM outputs on pins 5 and 6.
- 2 TinkerKit TWI: these connectors (4-pin in white) are routed on the Arduino TWI interface. Both connect to the same TWI interface to allow you to create a chain of TWI devices.
Physical Characteristics
The maximum length and width of the 4 Relays Shield PCB are 2.7 and 2.1 inches respectively. Four screw holes allow the Shield to be attached to a surface or case. Note that the distance between digital pins 7 and 8 is 160 mil (0.16"), not an even multiple of the 100 mil spacing of the other pins.
Compatible Boards
The shield is compatible with all the Arduino boards, 5V and also 3.3V standards.
Learn more
Get Inspired
„Alexa, who is at the door?“ - A face recognizing Arduino camera using AWS Rekognition for my grandmother
I created this project and my target is improve the comfort of my home. Taking a look around I noticed that home automation solution proposed by the big market player are too much expensive for me and, above all, I should create new wires connections between light, plug, etc.. and the control box.My idea is use what we already have without spend lot of money to buy a owner solution, so I started with arduino, my android mobile phone, some relays and my home.I have a nice home, 2 bad rooms, kitchen with living room and it was very nice tka e the control of the lights, gate and door with my mobile phone. [Mattia] have realized home automation via internet, using: [...] an Arduino 2009 with ethernet shield and the game is very easy, I send some http message to arduino, he moves some relays and give me back a JSON response. Not so hard, but the hard business is interfacing with the electrical wiring of home, with some patience I found what I need and I linked those wires at the relays. A chi non è mai capitato di restare chiuso fuori casa senza le chiavi? Beh a noi spesso e ci sarebbe piaciuto aprire il nostro cancello o porta di ingresso usando il telefono cellulare che abbiamo sempre con noi, il bisogno aguzza l'ingegno...ed ecco fatto! Ci siamo guardati un attimo in giro ed abbiamo recuperato un po' di informazioni su Arduino, la sua filosofia a "brick" ci è sembrata l'ideale per fare quello che avevamo in mente, il mio HTC Hero con Android OS ha fatto il resto. [Mattia] ha realizzato un progetto di automazione domestica usando Arduino Duemilanove e Ethernet Shield: [...]Bisogna far comunicare Arduino con il nostro telefono, la soluzione più pulita che mi è balzata in mente era quella di usare il protoccolo http per farsì che la comunicazione avvenga e JSON per scambiarsi i dati agilemente. Più informazioni sul sito [nerdyDog] via [ArduinoForum] source [nerdyDog] more on [nerdyDog] site via [ArduinoForum] source [nerdyDog]
