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| import time
import grovepi
from grovepi import *
# Connect the Grove Light Sensor to analog port A0
# SIG,NC,VCC,GND
light_sensor = 0
# Connect the LED to digital port D4
# SIG,NC,VCC,GND
led = 4
# Turn on LED once sensor exceeds threshold resistance
threshold = 10
# Connect the Motion Sensor to digital port D3
pir_sensor = 8
motion=0
grovepi.pinMode(pir_sensor,"INPUT")
grovepi.pinMode(light_sensor,"INPUT")
grovepi.pinMode(led,"OUTPUT")
while True:
try:
# Get sensor ValueError
sensor_value = grovepi.analogRead(light_sensor)
# Calculate resistance of sensor in K
resistance = (float)(1024 - sensor_value) * 10 / sensor_value
if resistance > threshold:
motion=grovepi.digitalRead(pir_sensor)
elif motion==0 or motion==1:
time.sleep(1)
if motion==1:
print("sensor_value = %d resistance = %.2f" %(sensor_value, resistance))
time.sleep(.3)
grovepi.digitalWrite(led,1)
else:
if motion==0:
grovepi.digitalWrite(led,0)
time.sleep(1)
print ('-')
except IOError:
grovepi.digitalWrite(led,0)
print ("Error") |
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