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When you hear the term ‘smart garden’, one of the things that comes to your mind is a system that measures soil moisture and irrigates your plants automatically. With this type of system, you can water your plants only when needed and avoid over-watering or under-watering. This project shows how to make an Arduino based automatic plant watering system. In fact, the idea of making an automatic plant watering system came up with the thought that my plants would be waterless before I went on summer vacation. The soil moisture sensor, water pump motor and some pipe in my workshop came to mind and I wanted to make project.
🧰 The list of components and hardware that we will mainly need is as follows:
Your Plants
Soil Moisture Sensor
Microcontroller
Motor Driver
Water Pump Motor:
Pipe
Some Jumper Wires for Connections
Water Bucket
Power Supply
📌 Which Microcontroller and Motor Driver?
You can use any model of Arduino microcontroller (such as UNO, Nano, Mega). As long as the connections are made correctly, the shared source code will run smoothly.
However, if I was going to use an Arduino microcontroller, I would also need a motor driver or maybe even a relay. If we used a model like an Arduino UNO in the project, we would have to create a circuit using the following motor drivers together:
L293D Motor Driver Shield (It makes it difficult to connect extra sensors)
L293D Motor Driver IC Chip (It needs a breadboard and needs complex wiring)
L298N Motor Driver Module (It needs extra wiring)
If you are going to use an Arduino model, the circuit can be a bit complicated. To avoid this complexity, I created a prototype and got PCB printing service from PCBWay. On my design board I used an ATmega328P, an L293D motor driver, a CH341 chip to program it easily via USB.
In addition, you can use this board in your different projects another from the plant watering system. For example, this board allows you to control Servo motor, 2 DC motors and many sensors. I used this board again for the 5 in 1 robot project and I created a robot tank that works in 5 different modes with 1 board. If you want to browse, the project link is below:
5 in 1 Robot - • Make 5 in 1 Robot
You can get high quality and low budget PCB service from PCBWay: www.pcbway.com/project/sharep...
📌 2 in 1 Microcontroller (built-in Motor Driver)
While designing the PCB prototype, I took care to choose components that are easy to find and solderable. On my design board I used an ATmega328P, an L293D motor driver, a CH341 chip to program it easily via USB. You can get the necessary components from the links below. You can use the designator table I shared for the positions of the components on the PCB.
🧰 Required Components
ATmega328P with Bootloader: bit.ly/2U9iwJw - amzn.to/39sAs9g
L293D Motor Driver IC: bit.ly/33BV2ju - amzn.to/2ZqRob1
Type B USB Socket: bit.ly/2WBSQqw - amzn.to/3drUYIl
DIP Socket 28/16 Pins: bit.ly/2UahQDK - amzn.to/3dqOPMF
12/16 MHz Crystal: bit.ly/33FNTyL - amzn.to/31yAYhB
L7805 TO-220: bit.ly/2N5WnYG - amzn.to/3rFGY2A
100uF Capacitor: bit.ly/2U98JTU - amzn.to/3sFBDcX
Resistor 10K / 1K: bit.ly/2WFsNPl - amzn.to/3bj2HY9
470nF Capacitor: bit.ly/2UwQ2bw - amzn.to/3fBj9a4
Power Jack Socket: bit.ly/2QAzFdp - amzn.to/31G7Mp3
2 Pin Terminal Block: bit.ly/2lEgy58 - amzn.to/31ETYei
Male Pin Header: bit.ly/3ab5h0w - amzn.to/3dmwTT9
10nF / 22pF Ceramic: bit.ly/2WCuQ6Y - amzn.to/31DVAVF
🧰 Required Tools
Soldering Station: bit.ly/3yjXCsu - amzn.to/3jH1ZKf
Soldering Iron Wire: bit.ly/3xOs7X0 - amzn.to/3xQXAaK
10 авг 2021
