[[Image(verarelay.png, align=right, width=600px)]]
= Relay Actuator =

== Software ==
You can download the Arduino sketch here:\\
http://code.mios.com/trac/mios_arduino-sensor/browser/trunk/Arduino/RelayActuator

== Wire things up ==

Follow the instructions in ConnectingRadioModule to connect radio module.

Connect the IN1 and IN2 of relay to digital pin 3,4 of Arduino board. 
Connect VCC to +5V of the Arduino board. GND to GND.
I Used a dual relay module. But the code can easily be adapted to handle more or less relays by modifying RELAY_1 (which digital input first relay is connected to) and NUMBER_OF_RELAYS defines at the top of the sketch code.

== Hardware - Purchase guide ==

To build this sensor you'll need one arduino + radio specified in the base kit found here:\\
http://code.mios.com/trac/mios_arduino-sensor/wiki/WikiStart#Buyingguide\\
With the following additional parts:

1x Relay module\\
http://www.aliexpress.com/item/5V2-CHANNEL-RELAY-MODULE-FOR-ARDUINO-PIC-ARM-DSP-AVR-ELECTRONIC-SCA-1720/933830812.html

TOTAL SENSOR PRICE: $7.6 (arduino + radio) + $3.3 (relay module) = '''$10.9'''

[[Image(relay.jpg, width=500px)]]