Python LabJack Proximity Sensor

Simple program to sense if someone or something is near.
Uses a Sharp proximity sensor


######################################### proximity.py ###################################
# Program that uses LabJack U3 and a Sharp Proximity sensing units from All Electronics
# (Catalog number OSU-80)
# Wiring:  Sharp proximity sensor's white wire connects to the LabJack U3's FIO0 connector.
# Black wire goes to ground.  Red wire goes to VS (positive 5 Volts).
import u3
from easyU3 import *
from time import sleep
d = u3.U3() # Opens first found U3 over USB
u3setup(d)
print
print "Use ^C to kill this program"
while True:
   #Read an analog input
   ain0=analogIn0(d)
   print int(5.0*ain0)*" ",
   print "*",str(ain0)
   sleep(0.1))

Fancier program that speaks to you and tells you to come closer…


######################################### proximity2.py ###################################
# Program that uses LabJack U3 and a Sharp Proximity sensing units from All Electronics
# (Catalog number OSU-80)
# Wiring:  Sharp proximity sensor's white wire connects to the LabJack U3's FIO0 connector.
# Black wire goes to ground.  Red wire goes to VS (positive 5 Volts).
def v_to_d(v):
   return 60.0/v   #Return the distance in centimeters
import u3
from easyU3 import *
from time import sleep
d = u3.U3() # Opens first found U3 over USB
u3setup(d)
print
print "Use ^C to kill this program"
while True:
   #Read an analog input
   ain0=analogIn0(d)
   distance=v_to_d(ain0)
   print int(distance)*" ",
   print "*",str(distance)
   sleep(0.1)

Peter G. Halverson, Ph.D.