[[Image(servo.png, align=right, width=600px)]]
= Servo Actuator =

A servo is a small strong "motor" that have limits. Usiually they can be turned 180 degrees.

== Software ==
You can download the Arduino sketch [[http://code.mios.com/git_public/mios/arduino-sensor.git/tree/HEAD:/VeraArduino/Arduino/libraries/Vera/examples/ServoActuator?js=1?js=1|here]]\\

== Wire things up ==

Follow the instructions in ConnectingRadioModule to connect radio module.

The servo has 3 wires. 
Connect red wire to +5V of the Arduino board. Brown or black to to GND.\\
Connect the last [mine was orange colored] wire to digital pin 3 of the Arduino board.\\


Relays can use much power and should probably be powered separately. I has some problems with when servo reached its limit (and i tried to move it further). This was too heavy [consumed too much power] for the Arduino so it reset itself. You can fine-tune the boundaries of the servo by modifying the SERVO_MIN and SERVO_MAX defines.

https://www.youtube.com/watch?v=djnqEgbe8BM

== 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 [[http://www.tkqlhce.com/click-7319170-10881559?url=http%3A%2F%2Fwww.aliexpress.com%2Fitem%2F2pcs-High-Torque-MG996R-Digital-Metal-Gear-RC-Servo-For-Helicopter-Car-Boat-Airplane%2F570595893.html|Servo Module]]\\


TOTAL SENSOR PRICE: $7.6 (arduino + radio) + $6.5 (servo module) = '''$14.1'''

[[Image(servo1.jpg, width=500px)]]
[[Image(servo2.jpg, width=500px)]]