Plant with auto watering
- Raspberry Pi 3 Model B+
- Soil Moisture Sensor
- Flexible Water Line
- 12V Relay
- 12V Micro Submersible Pump
- TOLI 120pcs Multicolored Dupont Wire
- 5v Power Supply (Any USB Cable+ USB Wall Charger
- 12v batteri pack for pump supply
Hardware setup
Water Sensor – plug the positive lead from the water sensor to pin 2, and the negative lead to pin 6. Plug the signal wire (yellow) to pin 8.
Relay – Plug the positive lead from pin 7 to IN1 on the Relay Board. Also connect Pin 2 to VCC, and Pin 5 to GND on the Relay board.
Pump – Connect your pump to a power source, run the black ground wire between slots B and C of relay module 1 (when the RPi sends a LOW signal of 0v to pin 1, this will close the circuit turning on the pump).
This diagram capture the correct GPIO as long as you are using Raspberry Pi 3 B+ and not shown is another power source to the RPi.
Lamp using 5v from USB and its scheduled with crontab schedule.
Software setup
Flaskwebserver – ( http://flask.pocoo.org/ )
The next aspect of this project is to setup and install the web server. This python script runs a web server enabling various actions from the script described above. It will control the plant in the way you want.
You will need to install flask, and psutil as follows:
$> python3.4 -m pip install flask $> python3.4 -m pip install psutil
$> sudo python3.4 web_plants.py Now if you navigate to the ip address of your RPi, you should see a web dashboard something like this:
Make sure to place the web_plants.py file in the same directory as the water.py script above. You will also need to create a sub-directory called templates, and place main.html in the templates directory. Now run the following command command to start your web server:
Get the code: https://github.com/payamdvd
Run it on boot:
Type:
$> sudo crontab -e
@reboot cd <your path to web_plants>; sudo python3.4 web_plants.py
