In this tutorial, you will learn to send emails with an SMTP client and MicroPython using ESP32. We will learn to send emails to SMTP servers such as Gmail, Hotmail, and Outlook. The umail is a lightweight, scalable SMTP client for sending emails in MicroPython. For demonstration, we will send a simple text message in … Read more
In this user guide, we will learn how to interface a micro SD card with ESP8266 NodeMCU using the microSD card module or connector and Arduino IDE. This module provides an SPI interface to connect an SD card module with any microcontroller which supports the SPI communication interface. Using a micro SD card becomes very … Read more
In this tutorial, we will see how to send text messages with ESP32/ESP8266 and Twilio using MicroPython. Twilio is a communications web service that allows users to make and receive phone calls and SMS along with other communication functions. Although Twilio is not free to use but you can get started with a free trial … Read more
In this tutorial, we will show you how to send Whatsapp messages to your account with ESP32 and ESP8266 using Whatabot or callmebot free APIs and MicroPython. You can use any one of them. But we will use callmebot API for demonstration. These free WhatsApp APIs can be helpful in sending message notifications, sensor readings, … Read more
In this user guide we will learn to interface RCWL-0516 microwave radar sensor module with ESP8266 NodeMCU and program it in Arduino IDE for motion detection. We will discuss the components of RCWL-0516 sensor module, pinout, configuration, features, specifications, interfacing, 2D model, and applications. We have similar guides with Arduino and ESP32: Recommended Components The … Read more
In this tutorial, we will learn to interface DS1307 RTC module with ESP8266 NodeMCU board. Firstly, we will look into these questions: What is RTC (Real-time clock)? Why real-time clock is used? How a RTC module communicates with ESP8266 on an I2C communication bus? How to make a digital clock using ESP8266 and DS1307 RTC … Read more
In this ESP8266 NodeMCU tutorial, we will introduce you to DS3231 RTC module which will monitor the current time and display it on an OLED. We will build a Real Time Clock (RTC) with the help of DS3231 module, ESP8266 and OLED display. A real time clock is basically a digital clock which is responsible … Read more
In this user guide, we will learn to build ESP8266 NodeMCU SHT31 Web server using Server-Sent Events (SSE). Using this technique, we will build an ESP8266 controlled web server that will automatically update sensor readings such as temperature and humidity to all connected web clients and display them in linear and radial gauges. Any appropriate … Read more
Whatabot and callmebot are free WhatsApp APIs that are helpful in sending message notifications, sensor readings, motion detection and door-opening alerts. In this tutorial, we will create a ESP8266 NodeMCU based motion detection notification system with WhatsApp messages using callmebot and WhataBot APIs and HTTP client library in Arduino IDE. It will send motion detection notifications to your … Read more
In a previous tutorial, we showed you how to send simple Whatsapp text messages to your account with ESP8266 using Whatabot and callmebot free APIs. In this guide, we will take that a step ahead and send sensor readings using callmebot and WhataBot API and HTTP client library in Arduino IDE and send the sensor data to our WhatsApp … Read more