MicroPython Forum (Archive)

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import machine
from machine import Pin
from machine import ADC
import time
from time import sleep

moisture = ADC(0)        #declare soil sensor
pump = Pin(4, Pin.OUT)    #declare pin 4 as output, naming it pump
dry_value = 600                #declare dry_value as 600

while True:                                       #create infinit loop till somthing breaks the true statement
    moisture_value = moisture.read()    #when there are readings from the soil sensor put them in 'moisture_value'
    print(moisture_value)                      #show readings from soil sensor
    sleep(3)                                          #wait for ... seconds
    
    if (moisture_value < dry_value):      #when readings from soil sensor is smaller than 600 then ...
        pump.on()                                  #pin 4 high
        print(pump.value())                      #shows pin state 1 (high)
        sleep(10)                                      #wait ... seconds
        pump.off()                                     #pin 4 (0)low
        sleep(10)                                        #wait 10 seconds
    

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c.publish(b'moisture', str(moisture).encode())

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>>> import pyb
>>> from pyb import Pin
>>> import time
>>>
>>> relay_pump=Pin('B12',Pin.OUT)
>>> res_out=Pin('C6',Pin.OUT) # reservoir sensor OUTPUT
>>> res_in=Pin('C7',Pin.IN,Pin.PULL_DOWN) # reservoir sensor INPUT
>>>
>>> def res_empty():
...     res_out.on()
...     b= not res_in.value()
...     res_out.off()
...     return b
>>>
>>> def pump(t_in_sec):
...     if res_empty():
...         return False
...     else:
...         relay_pump.on()
...         time.sleep(t_in_sec)
...         relay_pump.off()
...         return True
>>>