In this exercise, you will build a connected watering system. Once a specified temperature has been reached, the Home Yún signals the Control Yún and allows it to control the watering system – either starting it or stopping it.
You will build a test version and once it runs correctly, you will then add it to the other devices connected to the Home Yún.
Materials:
- Arduino Yún
- Jumper wires
- RGB LED
- Breadboard
- Pushbutton
- 10k resistor (The colors on it are brown ,black, orange and gold)
- Solenoid
- Transistor
- 150k resistor (The colors on it are brown ,green , black, orange and brown)
Assembling the MDF components
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Fit solenoid into bracket and insert into top piece
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Attach watering can onto top piece
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Attach legs to top piece
- Open “e3_watering_test” from the examples.
- Upload the sketch to your Control Yún.
- Open the Serial Monitor and test the watering systems start and stop.
- If it works, disconnect the watering system section and connect it to the Home Breadboard Unit according to the overlay.
- Once you have removed the watering system section, connect the RGB LED to your Control Yun.
- Open “e3_watering_control” from the examples.
- Upload the sketch to your Control Yún.
- Once the Home Yún’s temperature has gone above a specified threshold, you should then be able press the button to start the watering. If the temperature goes below the threshold, the watering system will automatically stop.