start

test.py

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+import time
+import board
+import busio
+import adafruit_ads1x15.ads1115 as ADS
+from adafruit_ads1x15.analog_in import AnalogIn
+
+
+i2c = busio.I2C(board.SCL, board.SDA)
+
+# Create the ADS object and specify the gain
+ads = ADS.ADS1115(i2c)
+ads.gain = 1 
+chan = AnalogIn(ads, ADS.P0)
+
+# Continuously print the values
+while True:
+    print(f"MQ-135 Voltage: {chan.voltage}V")
+    time.sleep(1)