Stepper Motor The Stepper motor is a brushless DC motor that divides the full rotation angle of 360° into a number of equal steps. The...

Servo Motor A servo motor is an electric device used for precise control of angular rotation. It is used where precise control is...

Small DC Motor DC motor converts electrical energy in the form of Direct Current into mechanical energy. In the case of the motor, the...

Introduction Ultrasonic Module HC-SR04 works on the principle of SONAR and RADAR system. The HC-SR04 module has an ultrasonic...

DHT11 Sensor DHT11 is a single-wire digital humidity and temperature sensor, which provides humidity and temperature values serially. It...

PIR Motion Sensor PIR sensor detects infrared heat radiations. It can be used to detect the presence of living objects that emit infrared...

GSM SIM900 Global System for Mobile communication (GSM) is a digital cellular system used for mobile devices. It is an international...

HC-05 Bluetooth Module HC-05 is a Bluetooth device used for wireless communication. It works on serial communication (UART). It is a...

Introduction Global Positioning System (GPS) makes use of signals sent by satellites in space and ground stations on Earth to accurately...

Introduction The keypad is used as an input device to read the key pressed by the user and to process it. 4x4 keypad consists of 4 rows...

Introduction DTMF (Dual Tone Multi-Frequency) is a telecommunication signaling technique that uses a mixture of two pure tones (pure sine...

RFID EM18 EM18 RFID reader module is used to read RFID cards that work at 125 kHz. When an RFID card comes in the range of the reader,...

GLCD 128x64 GLCD is a display device that can be used in embedded systems for displaying data and/or images/custom characters. Basically,...

LCD16x2 Custom Character LCDs (Liquid Crystal Displays) are used for displaying status or parameters in embedded systems. LCD 16x2 is a...

LCD 16x2 LCDs (Liquid Crystal Displays) are used for displaying status or parameters in embedded systems. LCD 16x2 is 16 pin device that...

LCD 16x2 LCDs (Liquid Crystal Displays) are used for displaying status or parameters in embedded systems. LCD 16x2 is 16 pin device that...

Introduction to 8051 Microcontroller Interrupts An interrupt is an event that occurs randomly in the flow of continuity. It is just like...

Introduction to 8051 Timers 8051 microcontrollers have two timers and counters which work on the clock frequency. Timer/counter can be...

Introduction to Power Saving Mode in 8051 Power down and Idle mode features are used to save power in microcontrollers. 8051 has an...

Introduction Serial communication means to transfer data bit by bit serially at a time, whereas in parallel communication, the number of...