Overview of IR LED and Photodiode IR communication makes use of IR (Infrared) waves from the electromagnetic spectrum. IR waves are not...

Overview of PIR Motion Sensor PIR sensor is used for detecting infrared heat radiations. This makes them useful in the detection of...

Overview of DHT11 DHT11 sensor measures and provides humidity and temperature values serially over a single wire. It can measure the...

Overview of LM35 LM35 is a temperature sensor that can measure temperature in the range of -55°C to 150°C. It is a 3-terminal device that...

Overview of RTC DS1307 Real Time Clock (RTC) module is a device used to monitor time and maintain the calendar. To monitor the time using...

Description The MAX7219 is a serially interfaced 8-digit LED display driver. It can be used to control up to 64 individual LEDs, or eight...

Overview of LCD 16x2 The LCD (Liquid Crystal Display) is commonly used in embedded applications to display various outputs and parameters...

Overview of SSD1306 OLED Display The OLED module shown in the above image is a very popular module available in the market. There are...

Description The WS2812B is a popular RGB LED that is used in various lighting applications. It consists of a single LED package with...

Description LCD16x2 is widely used in embedded applications as a display. It is a 2-line display with 16 characters in each line. The...

Description In this guide, we will build a web server with the Nodemcu to display temperature sensor readings on the analog gauge. We...

Description In this guide, we’ll show you how to publish any sensor readings/data on a Google spreadsheet using the Nodemcu board. For...

Overview of Magnetometer HMC5883L is a 3-axis magnetometer which is used for measuring the direction and magnitude of the Earth’s...

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

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

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

Overview of Bluetooth HC-05 is a Bluetooth device used for wireless communication with Bluetooth-enabled devices (like smartphones). It...

Description Recently, we are working on one project with NodeMCU and just wanted to change the SSID of the Wi-Fi access point. As usual,...