Description ESP-NOW is a wireless communication protocol developed by Espressif Systems for its Wi-Fi chips. It allows devices to...

Introduction The Hypertext Transfer Protocol (HTTP) is a standard application layer protocol that functions as a request-response...

Introduction The Transmission Control Protocol (TCP) is a standard transport layer internet protocol which used in establishing and...

Introduction MQTT is lightweight publish-subscribe based messaging protocol. It is quicker (faster) than other request-response based...

Introduction HTTP (Hypertext Transfer Protocol) is a standard Application protocol that functions as a request-response protocol between...

Introduction NodeMCU Development Board is based on the ESP8266 system on chip which combines the feature of Wi-Fi and microcontroller to...

Introduction UART (Universal Asynchronous Receiver/Transmitter) is a serial communication protocol in which data is transferred serially...

Introduction I2C (Inter-Integrated Circuit) is a serial bus interface connection protocol. It is also called as TWI (two-wire interface)...

Introduction An interrupt is an event that occurs randomly in the flow of continuity. It is just like a call you have when you are busy...

Introduction Pulse Width Modulation (PWM) is a technique by which the width of a pulse is varied while keeping the frequency of the wave...

Introduction Analog to Digital Converter(ADC) is used to convert the analog signals into digital form. ESP8266 has an inbuilt 10-bit ADC...

Introduction General-purpose input/output (GPIO) is a pin on an IC (Integrated Circuit). It can be either an input pin or output pin,...

Introduction ESPlorer is a Lua based IDE used to develop applications for NodeMCU. Lua scripts are generally used to program the NodeMCU....

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

Overview of DC Motor DC motor converts electrical energy in the form of Direct Current into mechanical energy in the form of rotational...

Overview of Servo Motor A servo motor is an electric device used for precise control of angular rotation. It is used in applications that...

Description Global Positioning System GPS is a network of satellites that send signals to receivers on the ground to determine their...

Description SD or Secure Digital is a type of memory card that was developed by the SD Card Association for use in portable devices such...

The module is based on the MFRC522 chip from NXP, which supports various RFID protocols, including ISO/IEC 14443 A/MIFARE, ISO/IEC 7816,...

Description A keypad is used as an input device to read and process the user's keystrokes. In the A 4x4 keypad contains four rows and...