A pump is a device that moves fluids (liquids or gases), or sometimes slurries, by mechanical action, typically converted from electrical energy into hydraulic energy.

The DC Water pump module is highly used with 12V power supply.

It is a fully submersible water pump having lot of applications as water outlet, soda drink outlet, project work and science model applications.

A seven-segment LED is a digital display module specialized to display numerical information.

Light-emitting diodes (LEDs) arranged in the shape of numbers offer an easily visible display. They are sometimes called "seven-segment displays" or "seven-segment indicators."

Laser Diode Module ( here refer to laser diode module ) is a kind of device which uses certain semiconductor material as working material to produce laser.

It includes Laser diode, some optic, cooling device, and some possible electrical elements, etc.

An 8×8 LED matrix has 64 LEDs (Light Emitting Diodes) which are arranged in the form of a matrix as 8 rows and 8 columns.

Hence it is named as an LED matrix. We will generate different rolling LED patterns as well as shape and display it on LED Matrix using different Arduino Codes.

Bluetooth BLE module is a technology that acts as an interface that aids the wireless Bluetooth Low energy connection of any two devices and establishes a protocol for the communication of data between the devices.

A GSM modem or GSM module is a device that uses GSM mobile telephone technology to provide a wireless data link to a network.

GSM modems are used in mobile telephones and other equipment that communicates with mobile telephone networks. They use SIMs to identify their device to the network.

A GPS module is used to locate and acquire farmland information, including yield monitoring, soil sample collection and etc.

The computer system determines the management measures of farmland plots by analyzing and processing the data, and loads the yield and soil status information into the GPS equipment.

The LDR Sensor Module is used to detect the presence of light / measuring the intensity of light.

The output of the module goes high in the presence of light and it becomes low in the absence of light. The sensitivity of the signal detection can be adjusted using a potentiometer.

The L293D is designed to provide bidirectional drive currents of up to 600-mA at voltages from 4.5 V to 36 V.

Both devices are designed to drive inductive loads such as relays, solenoids, DC and bipolar stepping motors, as well as other high-current/high-voltage loads in positive-supply applications.

It is a multiple‐message record/playback device.

It supports true voice recording, non‐volatile storage, and playback capability for 10 seconds.

This module is simple to use. You can have direct control by push button on the module itself or you can control automatically by microcontroller such as Arduino.

The Single Channel Relay Module is a convenient board which can be used to control high voltage, high current load such as motor, solenoid valves, lamps and AC load.

It is designed to interface with microcontroller such as Arduino, PIC and etc.

The 2 Channels Relay Module is a convenient board which can be used to control high voltage, high current load such as motor, solenoid valves, lamps and AC load.

It is designed to interface with microcontroller such as Arduino, PIC and etc.

An RF module (short for radio-frequency module) is a (usually) small electronic device used to transmit and/or receive radio signals between two devices.

In an embedded system it is often desirable to communicate with another device wirelessly.

The L298N is a dual H-Bridge motor driver which allows speed and direction control of two DC motors at the same time.

The module can drive DC motors that have voltages between 5 and 35V, with a peak current up to 2A.