Arduino based Automatic Plant Irrigation System with Message Alert

Whenever we go out of town for few days, we always used to worry about our plants as they need water on regular basis. So here we are making Automatic Plant Irrigation System using Arduino, which automatically provides water to your plants and keep you updated by sending message to your cell phone.

In This Plant Watering System, Soil Moisture Sensor checks the moisture level in the soil and if moisture level is low then Arduino switches On a water pump to provide water to the plant. Water pump gets automatically off when system finds enough moisture in the soil. Whenever system switched On or off the pump, a message is sent to the user via GSM module, updating the status of water pump and soil moisture. This system is very useful in Farms, gardens, home etc. This system is completely automated and there is no need for any human intervention.

Required Components:

• Arduino Uno
• GSM Module
• Transistor BC547 (2)
• Connecting wires
• 16x2 LCD (optional)
• Power supply 12v 1A
• Relay 12v
• Water cooler pump
• Soil Moisture Sensor 
• Resistors (1k, 10k)
• Variable Resister (10k, 100k)
• Terminal connector
• Voltage Regulator IC LM317

Working of this Automatic Plant Irrigation System is quite simple. First of all, it is a Completely Automated Systemand there is no need of manpower to control the system. Arduino is used for controlling the whole process and GSM module is used for sending alert messages to user on his Cellphone.

If moisture is present in soil  then it sends SMS to user about “Soil Moisture is Normal. Motor turned OFF” and water pump remains in Off state.

Now if there is no Moisture in soil then turns On the water motor and also sends message to user about “Low Soil Moisture detected. Motor turned ON”. Motor will automatically turn off when there is sufficient moisture in the soil.

Arduino Real Time Clock

A real-time clock (RTC) is a computer clock (most often in the form of an integrated circuit) that keeps track of the current time.

Although the term often refers to the devices in personal computers, servers and embedded systems, RTCs are present in almost any electronic device which needs to keep accurate time. A common RTC used in single-board computers is the Maxim Integrated DS1307.

Components Required

• Arduino UNO
• DS1307 RTC Module
• 16×2 LCD Display
• Breadboard
• Connecting wires
• Power supply

Working of Arduino Real Time Clock DS1307 Interface

A simple project where Arduino UNO is interfaced with DS1307 Real Time Clock is implemented here. In this project, we will be programming the DS1307 RTC with current date and time and see whether it actually keeps that data even if the power supply to Arduino is removed.

A special library called “RTClib” is used in the programming. 

In order to upload the data and time into the DS1307 RTC IC, we have used a feature available in the RTClib library, where the Arduino will upload the date and time from the computer while uploading the code.

Voice Controlled LEDs using Arduino and Bluetooth

Controlling LEDs with voice command seems to be a difficult task, but it’s easy and you can quickly build it. We just need an Arduino UNO to serially communicate with HC-06 Bluetooth module and a smartphone to send voice command to Bluetooth module HC-06. For receiving voice command we are using “Arduino Bluetooth Voice Controller” android app.
Material Required:

• Arduino UNO
• HC-06 Bluetooth Module
• LEDs (Red, and Green)
• Resistor 220 ohm (2 nos.)
• Arduino Bluetooth Voice Controller (Download from play store)
• Breadboard
• Connecting wires

Bluetooth can operate in the following two modes:

1. Command Mode
2. Operating Mode

In Command Mode we will be able to configure the Bluetooth properties like the name of the Bluetooth signal, its password, the operating baud rate etc. The Operating Mode is the one in which we will be able to send and receive data between the PIC Microcontroller and the Bluetooth module. Hence in this tutorial we will be toying only with the Operating Mode. The Command mode will be left to the default settings. The Device name will be HC-05 (I am using HC-06) and the password will be 0000 or 1234 and most importantly the default baud rate for all Bluetooth modules will be 9600.
The module works on 5V supply and the signal pins operate on 3.3V, hence a 3.3V regulator is present in the module itself. Hence we need not worry about it. Out of the six pins only four will be used in the Operating mode.

HC-06 Bluetooth Module:

S.No	Pin on HC-05/HC-06	Pin name on MCU	Pin number in PIC
1	Vcc	Vdd	31st pin
2	Vcc	Gnd	32nd pin
3	Tx	RC6/Tx/CK	25th pin
4	Rx	RC7/Rx/DT	26th pin
5	State	NC	NC
6	EN (Enable)	NC	NC

Coin based water dispenser

Here we put forward a fully automated coin based water dispenser system using micro-controller and sensor. The system is capable of fully automated water/cola dispensing using motors and sensors. The system also senses if glass is placed at the counter to avoid water spoilage if there is no glass placed at the counter panel. The system uses IR sensors to detect presence of glass and then the sensors send a signal to the micro-controller. The micro-controller now processes the information sent by the sensors to determine if glass is present. The system also has a coin detector that is used to sense particular coins and send information to micro-controller about valid coins. On detecting a valid coin the system now sends a signal to the controller who checks if glass is present and then it starts the motor to pour water in glass using motor as long the glass is present. If glass is removed during the process, system stops the water supply until glass is encountered. Thus we here put forward a smart water dispenser system with water saving feature.

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Finger print based attendance system

Attendance systems are commonly used systems to mark the presence in offices and schools. From manually marking the attendance in attendance registers to using high-tech applications and biometric systems, these systems have improved significantly.

Fingerprint sensor module captures finger’s print image and then converts it into the equivalent template and saves them into its memory as per selected ID by Arduino. All the process is commanded by Arduino like taking an image of finger’s print, convert it into templates and storing as ID etc.

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Automatic street light

               

In our country we see the street light glow all times in night. In this project, we manage street light according to the person if any person or vehicle is available then street light glow otherwise light turned off.

A IR sensor is used in every street light to detect the object or person, if any object or person is available in the front of street light pole then the street light if turned on for few times after that turned off. We can save electricity by using this idea .

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