In this user guide, we will learn to generate PWM or pulse width modulation using ESP8266 NodeMCU board using Arduino IDE. You will see how to generate PWM signals using the ESP8266 NodeMCU development board. All input/output pins of this development board can be used to get the PWM signal. We only need to specify … Read more
In this tutorial, we will learn how to use GPIO pins of ESP8266 NodeMCU module as output pins as well as input pins. Accordingly, we will also show how to interface an LED controlled via a push button with the ESP8266 board. We will be reading the value from the Push Button and lighting up … Read more
In this tutorial, we will learn to use interrupts and timers of ESP8266 NodeMCU using Arduino IDE. By using ESP8266 interrupt, we will be able to detect changes on GPIO pins without the need to continuously poll GPIO pins. Whenever an interrupt occurs, we can execute a certain function that should execute on state change … Read more
In this tutorial, we will learn about ADC of ESP8266 NodeMCU using Arduino IDE. Firstly, we will see how to read analog values with ESP8266 ADC. We will achieve this by interfacing a potentiometer with an analog input pin of ESP8266 ADC and read analog voltage across the potentiometer. NodeMCU ADC will convert this analog … Read more
In this tutorial, we will learn to create a DS18B20 web server using ESP8266 NodeMCU and Arduino IDE. DS18B20 is used to measure temperature in Celsius and temperature in Fahrenheit. This web server will act as a weather station as it will show temperature readings in Celsius and Fahrenheit on the web page. The DS18B20 … Read more
In this tutorial, we will see how to send data from one ESP32/ESP8266 to multiple ESP32 and ESP8266 boards using ESP-NOW and Arduino IDE. In other words, we will transmit data from one ESP32 to many ESP32 and ESP8266 boards (One to Many Communication). Previously, we sent data from one ESP32 to another ESP32 via … Read more
In this tutorial, we will learn to monitor heart rate using a pulse sensor (SEN-11574) and ESP8266 NodeMCU. Firstly, We will discuss the introduction, pinout, working, and connection diagram of the pulse sensor (SEN-11574) with ESP8266 NodeMCU. After that, we will three examples such as controlling LED with pulse rate, plotting data on serial monitor, … Read more
In this tutorial, we will learn to create a BME280 web server using ESP8266 NodeMCU and Arduino IDE. BME280 is used to measure temperature in Celsius, the temperature in Fahrenheit, humidity, and Pressure. This web server will act as a weather station as it will show temperature, humidity, and pressure readings on the web page. … Read more
In this user guide, we will learn how to create an ESP32 and ESP8266 web server through which we will input different types of data on the HTML form. We will learn how to create input fields through which the user will enter data that will get transferred to the ESP32/ESP8266 boards. We can use … Read more
In this comprehensive tutorial, we will learn how to flash MicroPython firmware to ESP32 and ESP8266 NodeMCU boards using esptool.py. The esptool.py tools can be used on Windows, Linux, and MacOS. It is a python based command line utility used to flash and erase Micropython firmware for various development boards such as ESP32 and ESP8266. … Read more