#is at .3, this code will convert that number to a target dc light level of 70%.
lightLevel = 1 - lightLevel
lightLevel = lightLevel * 100
#If the target light level is below 20%, this if statement scales it exponentially
#downward to a lower level by taking the 1/4 root of the original value. This is done
#to help make the lights dimmer indoors because the light sensor usually doesn't get
#above 90 indoors.
if (lightLevel < 20):
lightLevel = lightLevel**(.25)
#If the current duty cycle is below the target light level, then the dc value is
#increased slightly, otherwise it is decreased slightly when it is measured as higher
#than the target level.
if (((dc - lightLevel) <= -1) and dc <= 99):
dc = dc + 1
else:
if (((dc - lightLevel) >= 1) and dc >= 1):
dc = dc - 1
#This new dc value is fed into the LED switch to change its intensity. The loop runs every
#.05 seconds, so the LEDs quickly dim or brighten to the level they are supposed to be at.
LED.ChangeDutyCycle(dc)
time.sleep(.05)
#Everything is cleaned up and the program is ended.
LED.stop()
light.close()
GPIO.output(signal, 0)
GPIO.cleanup()
sys.exit()
#ldrone.py
from gpiozero import LightSensor
from time import sleep
ldr = LightSensor(4)
try:
while True:
sleep(0.2)
print("ldr.value " + str(ldr.value))
if ldr.value < 0.95: # make the sensitivity different
print("Light Blocked")
else:
print("Light On")
except KeyboardInterrupt:
print("Exiting ...")
finally:
ldr.close()
class TestStrikeZone(unittest.TestCase):
def setUp(self):
self.strikeZone = StrikeZone()
self.horizSensor1 = LightSensor(17)
self.horizSensor2 = LightSensor(27)
self.vertSensor1 = LightSensor(23)
self.vertSensor2 = LightSensor(24)
def tearDown(self):
self.horizSensor1.close()
self.horizSensor2.close()
self.vertSensor1.close()
self.vertSensor2.close()
self.strikeZone = None
'''Test ball hitting horiz1 and not hitting either vertical'''
def test_horizSensor1_ball(self):
self.strikeZone.horizDark(self.horizSensor1)
self.assertEquals(self.strikeZone.horizDetected, 1)
self.assertEquals(self.strikeZone.strikeCount, 0)
self.assertEquals(self.strikeZone.ballCount, 0)
self.strikeZone.horizLight(self.horizSensor1)
self.assertEquals(self.strikeZone.strikeCount, 0)
self.assertEquals(self.strikeZone.ballCount, 1)
'''Test ball hitting vert1 and not hitting either horiz'''
def test_vertSensor1_ball(self):
self.strikeZone.vertDark(self.vertSensor1)
self.assertEquals(self.strikeZone.vertDetected, 1)
self.assertEquals(self.strikeZone.strikeCount, 0)
self.assertEquals(self.strikeZone.ballCount, 0)
self.strikeZone.vertLight(self.vertSensor1)
self.assertEquals(self.strikeZone.strikeCount, 0)
self.assertEquals(self.strikeZone.ballCount, 1)
'''Test ball hitting horiz1 and horiz2 and not hitting either vertical'''
def test_horizSensor1_and_horiz2_ball(self):
self.strikeZone.horizDark(self.horizSensor1)
self.strikeZone.horizDark(self.horizSensor2)
self.assertEquals(self.strikeZone.horizDetected, 2)
self.assertEquals(self.strikeZone.strikeCount, 0)
self.assertEquals(self.strikeZone.ballCount, 0)
self.strikeZone.horizLight(self.horizSensor1)
self.strikeZone.horizLight(self.horizSensor2)
self.assertEquals(self.strikeZone.strikeCount, 0)
self.assertEquals(self.strikeZone.ballCount, 1)
'''Test ball hitting horiz1 and vert2 for strike'''
def test_horizSensor1_and_vert2_strike(self):
self.strikeZone.horizDark(self.horizSensor1)
self.strikeZone.vertDark(self.vertSensor2)
self.assertEquals(self.strikeZone.horizDetected, 1)
self.assertEquals(self.strikeZone.vertDetected, 1)
self.strikeZone.horizLight(self.horizSensor1)
self.strikeZone.vertLight(self.vertSensor2)
self.assertEquals(self.strikeZone.strikeCount, 1)
self.assertEquals(self.strikeZone.ballCount, 0)
