树莓派连接光敏电阻传感器通过模数转换显示光照强度的python代码

以下是树莓派连接光敏电阻传感器通过模数转换显示光照强度的 python 代码：

import RPi.GPIO as GPIO
import time

GPIO.setmode(GPIO.BCM)
GPIO.setup(18, GPIO.IN)
voltage = 3.3

def rc_time(pin):
    count = 0
    GPIO.setup(pin, GPIO.OUT)
    GPIO.output(pin, GPIO.LOW)
    time.sleep(0.1)
    GPIO.setup(pin, GPIO.IN)
    while (GPIO.input(pin) == GPIO.LOW):
        count += 1
    return count

try:
    while True:
        light_intensity = rc_time(18)
        resistance = (voltage * 10000 - voltage * light_intensity) / light_intensity
        print("Light Intensity: " + str(light_intensity))
        print("Resistance: " + str(resistance))
        time.sleep(1)

except KeyboardInterrupt:
    pass

GPIO.cleanup()

希望对你有所帮助！