from machine import ADC, Pin
import time

adc = ADC(Pin(28))
rled = Pin(10, Pin.OUT)
gled = Pin(5, Pin.OUT)
bled = Pin(0, Pin.OUT)

while True:
    value = adc.read_u16()
    print('vr =', value)
    time.sleep_ms(100)
    if value < 10000:
        rled.off()
        gled.off()
        bled.off()
    elif value < 30000:
        gled.off()
        bled.off()
        rled.on()
    elif value < 40000:
        rled.off()
        bled.off()
        gled.on()
    elif value < 50000:
        rled.off()
        gled.off()
        bled.on()
    elif value < 60000:
        gled.off()
        bled.on()
        rled.on()
    else:
        rled.off()
        gled.on()
        bled.on()