69 lines
No EOL
1.3 KiB
Python
69 lines
No EOL
1.3 KiB
Python
from machine import ADC, Pin
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from mq9 import MQ
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import time
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import dht
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import network
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import ntptime
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import urequests
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# Global Params
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gas = ADC(Pin(35))
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led = Pin(2,Pin.OUT)
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led.value(0)
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# Function to read MQ9 Sensor
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def read_mq9(mq):
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while True:
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try:
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adc = gas.read_u16()
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sensor_volt = gas.read_uv()/1000000
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perc = mq.MQPercentage()
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break
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except:
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pass
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co = perc["CO"]*1000
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if co >= 10000:
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cp = 10000
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result = [adc,sensor_volt,co]
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return result
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# Function to Blink
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def blink():
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led.value(1)
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time.sleep(0.5)
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led.value(0)
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time.sleep(0.5)
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# Function to Blink Faster
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def blink_fast():
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led.value(1)
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time.sleep(0.25)
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led.value(0)
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time.sleep(0.25)
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# Main Script
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def main():
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# Calibrate Sensor
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print("Calibrating MQ-9 Sensor")
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led.value(1)
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while True:
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try:
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mq = MQ()
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break
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except:
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pass
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led.value(0)
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print("Calibrated")
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print("")
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print("Start Monitoring:")
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print("")
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while True:
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result = read_mq9(mq)
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print(f"ADC Value : {result[0]}, Sensor Voltage : {result[1]} Volt, and Carbon Monoxide : {result[2]} ppm")
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if __name__ == "__main__":
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main() |