|  Motorizing 
              Sensors #1 
   By 
              Dean O.    
 I opted for using two small gear motors installed in the sensor 
              support arms to motorize the spinners. The motors themselves are 
              quite pricey (around $130 each).  I ordered them from MicroMo 
              at: www.micromo.com.  These eight millimeter motors with a 
              256:1 gear ratio, bring the RPMs down to around 30 RPMs at six volts. 
              If you order from MicroMo order the motor with the gearhead:
 0816P008S+08/1256:1 
              
 
  
 Installation was quite easy. Using the sensor support arms, I drilled 
              an eight-millimeter hole into the vertical section of the support 
              arm for the motor to sit in.
 
 
  
 And then another smaller one-eighth-inch hole for the connecting 
              wires to the motor. Install the wires first, before connecting them 
              to the motor.
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