from gpiozero import MCP3002
import RPi.GPIO as GPIO

LED = 20   # LEDポート
GPIO.setwarnings(False)
GPIO.setmode(GPIO.BCM)
GPIO.setup(LED, GPIO.OUT)
ch = MCP3002(channel=0)

while True:
    value = ch.value
    print(value)
    if value < 0.6:
        GPIO.output(LED, GPIO.HIGH)
    else:
        GPIO.output(LED, GPIO.LOW)