1. Smart plant watering system using Arduino
To avoid the plants getting dry because of delay in the watering of the plants an automatic plant watering system is formed using the Arduino Uno. This project uses sensors that can measure the level of moisture in the soil. As they are connected with Arduino when the moisture level is low the Arduino will turn on the water pump that will pump water from the reservoir to the plants. The components required for this project are.
- Soil moisture sensor (FC-28)
- Arduino Uno
- DC motor
- Water tubes
- Connecting wire
- Transistor (NPN)
- Resistor (220 ohms)
- Breadboard
2. Streetlight control using Arduino
In order to replace the manual handling streetlights a self-turn on and off system for streets can be made using the Arduino board. To make the automatic turning on and off the streetlights a light detecting sensor is used which will control the supply of streetlights. When there is no light, the sensor will turn on the supply for streetlight and vice versa. The following are the components that required to make this project
- Light detecting resistor
- LED
- Resistor 4.7 kilo Ohms
- Breadboard
- Connecting wires
- Arduino Uno
3. Alarm clock using Arduino
The Arduino board can be used to make the alarm clock by using the real time clock module and a buzzer. The push buttons are used for the adjustment of the alarm and the clock. Similarly, the clock module has a built-in battery which keeps it running when the system is in off state. Below the components list for the project is given as:
- Arduino Uno
- Real Time Clock Module (DS3231)
- Buzzer
- Potentiometer (10 kilo Ohms)
- Resistor (220 Ohms)
- Connecting cables
- Breadboard
- Display LCD
- Push buttons (4)
- DC battery (9V)
4. Security system for home using Arduino
A simple home security system can be made by interfacing a motion sensor with Arduino. This can detect the intruder trying to get in the house very easily. A module for the communication is used to communicate to the user if there is an intruder in the house. Similarly, for alarm a buzzer is also added to alarm the residents as well. To make the security system for home the following is the required item list
- Arduino uno
- Passive infrared sensor (PIR)
- Buzzer
- Wires for connection
- GSM module
5. Battery health checking system using Arduino
A simple tester can be made to check the health of the batteries by using Arduino. The health of the batteries can be determined by measuring the voltage of the battery. This can be done using the if loop in the Arduino programming and for the output different colors of LEDs can be used to express the charge of the cell batteries. The components required of this simple project are given below:
- Three resistors of 560 Ohms
- One resistor of 2.2 kilo Ohms
- Green color LED
- Yellow color LED
- Red color LED
- Breadboard
- Connecting wires
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Arduino Uno
6. Smoke detection using Arduino
A smoke detecting sensor can be made by interfacing the smoke sensor using Arduino Uno. The smoke sensor can detect different types of gasses like LPG, hydrogen, methane, propane, and butane. The model of the sensor used in this project is MQ-2 and like potentiometer the sensor sensitivity can also be adjusted using a knob. Similarly, When the smoke is detected, the alarm will start, and the red LED will also start to blink. This project has a small list of components that is given as:
- Breadboard
- Arduino Uno
- Smoke sensor (MQ-2)
- Wires
- Buzzer
- Green color LED
- Read color LED
7. Making traffic lights system using Arduino
Traffic lights can be made by using Arduino Uno simply turning on the LEDs with the delay of some seconds. There are three colors of LEDs that are used for the traffic light system that are red, yellow and green. The component list required for making a traffic light system is:
- Arduino Uno
- RYB LED
- Jumping wires
- Three resistors each of 100 Ohms
- Breadboard
8. Finding the temperature using Arduino
To get the temperature data for different areas or to measure the temperature of a device, temperature sensors are used. These sensors can be interfaced with Arduino and a temperature measuring device can be made. This project uses the thermistor as the temperature sensor and then the temperature is then displayed on the LCD interfaced with Arduino. To make a temperature measuring device the following is required list of items
- Arduino Uno
- Temperature sensor (LM35)
- Connecting wires
- LCD panel
- One resistor of 100KOhms
9. Building a stopwatch using Arduino
This project is about making a stopwatch using Arduino. The stopwatch is mostly used for measuring time for doing a specific task. The stopwatch generally consists of two buttons, one is for starting the timer and the other is for stopping the timer. Similarly, to reset the stopwatch the reset button of Arduino is used and for the functioning of the stop watch the clock of the Arduino is being used by using the millis function. The components required to make a stopwatch are:
- Arduino UNO
- Liquid crystal Display
- Two Push Buttons
- Breadboard
- Jumper wires
10. Line following robot using Arduino
This project makes a robot which only follows a line with the help of the proximity sensors interfaced with Arduino. These sensors are placed on both sides of the robot and there are DC motors for each wheel of the robot. The motors are also connected with the arduino and work with respect to the output of the proximity sensor. For making the line following robot the following are the item required
- Robot body including DC motors and wheels
- Arduino Uno
- One motor driver integrated chip (L293D)
- Two IR Proximity Sensors
- Jump cables
- Switch
- four AA size cell Battery and its Holder
Conclusion
To develop learning about electrical circuits with Arduino is the best platform as it provides a variety of opportunities to make a vast number of do-it-yourself projects. This write up gives a list of the projects that a beginner should do to understand the electrical circuits. The short review of the recommended projects is given along with components required for complete understanding.
