Step 2: Hardware setup - Electronics
Pictures describe best, but here's a text breakdown:
pin 9/10 are servo Pan/tilt connections
pin 2 is IR clock
pin 12 is IR data
wire servo 1 white (pwm pos.) wire to pin 9, red to 5V and black to ground
wire servo 2 white wire to pin 10, red to 5V and black to ground
IR module (http://www.metrisinst.com/item_management/assets/files/TN9_UserManual_009.pdf):
wire IR data (pin D on module) to pin 12
wire IR clock (pin C on module) to pin 2
wire IR power (pin V on module) to diode from 3.3V supply
wire IR ground (pin G on module) to ground
(laser pointer versions -- solder a wire from V to the laser pos wire to have that on when measuring)
Remove the battery from the module!
Now you'r electronics are all set up and ready to be placed somewhere.