def main():
# Attach gas sensor to AIO0
myMQ2 = upmGas.MQ2(0);
## Exit handlers ##
# This function stops python from printing a stacktrace when you hit control-C
def SIGINTHandler(signum, frame):
raise SystemExit
# This function lets you run code on exit, including functions from myMQ2
def exitHandler():
print("Exiting")
sys.exit(0)
# Register exit handlers
atexit.register(exitHandler)
signal.signal(signal.SIGINT, SIGINTHandler)
threshContext = upmGas.thresholdContext()
threshContext.averageReading = 0
threshContext.runningAverage = 0
threshContext.averagedOver = 2
# Infinite loop, ends when script is cancelled
# Repeatedly, take a sample every 2 microseconds;
# find the average of 128 samples; and
# print a running graph of dots as averages
mybuffer = upmGas.uint16Array(128)
while(1):
samplelen = myMQ2.getSampledWindow(2, 128, mybuffer)
if samplelen:
thresh = myMQ2.findThreshold(threshContext, 30, mybuffer, samplelen)
myMQ2.printGraph(threshContext, 5)
if(thresh):
print("Threshold is ", thresh)
def main():
# Attach gas sensor to Analog A0
sensor = upmGAS.MQ6(0)
## Exit handlers ##
# This function stops python from printing a stacktrace when you hit control-C
def SIGINTHandler(signum, frame):
raise SystemExit
# This function lets you run code on exit, including functions from sensor
def exitHandler():
print("Exiting")
sys.exit(0)
# Register exit handlers
atexit.register(exitHandler)
signal.signal(signal.SIGINT, SIGINTHandler)
threshContext = upmGAS.thresholdContext()
threshContext.averageReading = 0
threshContext.runningAverage = 0
threshContext.averagedOver = 2
# Infinite loop, ends when script is cancelled
# Repeatedly, take a sample every 2 microseconds;
# find the average of 128 samples; and
# print a running graph of asteriskss as averages
mybuffer = upmGAS.uint16Array(128)
while (1):
samplelen = sensor.getSampledWindow(2, 128, mybuffer)
if samplelen:
thresh = sensor.findThreshold(threshContext, 30, mybuffer,
samplelen)
sensor.printGraph(threshContext, 5)
def main():
front = upmGas.MQ5(1)
right = upmGas.MQ3(2)
left = upmGas.MQ3(0)
threshContext = upmGas.thresholdContext()
global current_level
## Exit handlers ##
# This function stops python from printing a stacktrace when you hit control-C
def SIGINTHandler(signum, frame):
raise SystemExit
# This function lets you run code on exit, including functions from myMQ5
def exitHandler():
print("Exiting")
sys.exit(0)
# Register exit handlers
atexit.register(exitHandler)
signal.signal(signal.SIGINT, SIGINTHandler)
while(1):
left_reading = left.getSample()
front_reading = front.getSample()
right_reading = right.get_Sample()
# add conditional for if 2 of 3 senors are equal
if left_reading <= current_level and right_reading <= current_level and front_reading <= current_level:
if current_level is None:
else:
return
else if left_reading > right_reading and left_reading > front_reading:
current_level = left_reading
# move left
else if right_reading > left_reading and right_reading > front_reading:
current_level = right_reading
# move right
else if front_reading >= left_reading and front_reading >= right_reading:
current_level = front_reading