Automatic Plant Watering System

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Introduction: Automatic Plant Watering System

About: Hi, I am bharat .

This is the easiest and cheap plant watering system you can make.i didn't use any microcontroller.it is basically a transistor switch.you need to add some resistance between collector and base, to prevent transistor from getting defacted.(dont use without resistance if you do you will witness holly smoke)

Step 1: Parts You Need

1. Pcb - 1

2. Transistor - 1 (bc 547)

3. Vr - 1 (1-2m ohm)

4. Resistor - 1 (1k)

5. Relay switch - (6v)

6. Metal probes

Step 2:

Take a pcb and fix and solder all components according to schematic.

Step 3:

This is the circuit diagram.as i told yoh this is a transistor switch.

Step 4:

Before connecting pump make sure circuit is working properly. For that i have connected an led with battery. After testing it will replace led and battery with pump.

Step 5:

Now after that testing i connected a small water pump.whenever soil gets dry,the resistance between two probes increases that makes pump on.after soil gets water the resistance between two probes gets low that makes pump off.

Thanks

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