Arduino 4 Relays Shield

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.
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..
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 |
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
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 |
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.
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 :
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.
The shield is compatible with all the Arduino boards, 5V and also 3.3V standards.