IoT (Internet of Things) is transforming the way we interact with devices. One of the most effective ways to monitor sensor data remotely is by sending it to a cloud platform like ThingSpeak, where we can visualize it in real-time. This tutorial will use a NodeMCU ESP8266 to send temperature, humidity, and distance measurements from…
This lesson will explore how to connect and read data from sensors, display this data on a web server, and combine multiple sensors for enhanced functionality. We’ll learn how to build a simple web server using the ESP8266-based NodeMCU to display real-time sensor data. We’ll integrate a DHT11 temperature and humidity sensor and an HC-SR04…
In this lesson, we will learn how to use NodeMCU’s Wi-Fi capabilities to connect it to a network and communicate over HTTP. This is an essential part of IoT (Internet of Things), where devices send and receive data via the internet. Understanding Wi-Fi Capabilities of NodeMCU NodeMCU is equipped with the ESP8266 Wi-Fi module, which…
This lesson will teach you to read analog inputs using the NodeMCU’s ADC (Analog-to-Digital Converter). This is essential for interfacing sensors like temperature, light, or potentiometers with the NodeMCU. Understanding ADC (Analog-to-Digital Converter) The NodeMCU has a single ADC channel that can be accessed using the A0 pin. This pin reads voltages between 0V and…
In this lesson, we will learn how to use the GPIO (General Purpose Input/Output) pins of the NodeMCU board for digital input and output. This will help you control components like LEDs and read inputs from devices like push buttons. Overview of NodeMCU’s GPIO Pins NodeMCU has multiple GPIO pins that can be used for…
In this lesson, we will walk you through setting up your NodeMCU board from scratch, installing the required software, and running a simple LED blink test to confirm everything works properly. Install Drivers Depending on your NodeMCU board model, you may need to install drivers for your computer to recognize the board. After installation, plug…
What is NodeMCU? NodeMCU is an open-source IoT platform with firmware and a hardware development kit based on the ESP8266 or ESP32 Wi-Fi modules. It is widely used in IoT applications due to its low cost, built-in Wi-Fi connectivity, and ease of programming. Why Choose NodeMCU Over Other Platforms? Key Differences Between ESP8266 and ESP32…
What is Computer Vision? Computer vision is a field of artificial intelligence and computer science that enables machines to interpret and process visual data. It involves extracting meaningful information from images or videos, enabling tasks like object detection, face recognition, and motion tracking. Importance of Computer Vision in Electronics and Robotics In electronics and robotics,…
What is a Relay Module? A Relay Module is essential for controlling high-power devices with low-power circuits, such as those driven by an Arduino. It functions as a switch that can be operated electronically, allowing an Arduino to control devices like lights, motors, and other appliances running on higher voltages or currents than the Arduino can…
What is an LCD Display? An LCD (Liquid Crystal Display) is a popular component used in electronic projects to display information such as sensor data, messages, or user interfaces. It’s widely adopted due to its low power consumption and ease of use. One of the most commonly used LCDs is the 16×2 LCD, which can…