Simple Soil Moisture with Raspberry

 Hi,

after a long long long long long long time, i'm here again traying to do some stupid things with raspberry.

What i have done today is to implement a soil moisture to check if my plants need water. What we need is:

• Raspberry (i used Raspberry Pi 3)
• Soil moisture sensors (check it on Amazon)
• Some cables

The schema to implement is this:

Connect cables in this way:

• 5V (Raspberry) --> VCC (sensor)
• GND (Raspberry) --> GND (sensor)
• GPIO21 (Raspberry) --> DO (SIGNL on sensor)

almost simple.

And now this is the python code you can use to check signal coming from sensor:

#!/usr/bin/python

import RPi.GPIO as GPIO

import time

import datetime

 

#GPIO SETUP

channel = 21

GPIO.setmode(GPIO.BCM)

GPIO.setup(channel, GPIO.IN)

 

# infinite loop

while True:

        time.sleep(1)

        msg = ""

        if GPIO.input(channel):

                # Input is high

                msg = str(datetime.datetime.now()) + " - No Water Detected!"

                print msg

        else:

                # Input is low

                msg = str(datetime.datetime.now()) + " - Water Detected!"

                print msg

        f = open("soil_moisture.log", "a")

        f.write(msg)

        f.close()

This is how it looks like:

Stay tuned for next projects!!