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Tag Archives: iot

ESP8266 NodeMCU DHT22 Interfacing Tutorial

NodeMCU DHT22

The DHT22 is a temperature and humidity sensor in one package. It is widely used mainly due to its price but also because of it being robust and user-friendly. In this NodeMCU DHT22 interfacing tutorial, I will guide you in creating an IoT-based weather monitoring project.

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NodeMCU WiFi Jammer

NodeMCUv1.0 Pinout

There is, in fact, a way to create a NodeMCU WiFi jammer although technically, this is a deauther and not really a jammer. A jammer sends out noise on the WiFi frequency spectrum (2.4 GHz) while the program in this tutorial sends packets that disrupts the normal functions of your …

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NodeMCU Pinout Reference

NodeMCU Pinout

The NodeMCU is an Arduino-compatible board that features the ESP8266 at its core. It became popular because it is a WiFi-ready microcontroller by itself - no need for an Arduino. The aim of this article is to show all NodeMCU pinout and boards that are currently available.

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Web Server with NodeMCU WebSocket

NodeMCU WiFi Access Point

Uploading sensor data to web servers is one of the core ideas for Internet of Things (IoT). Such data are often small-sized and are continuously updated over time. And while HTTP performs satisfactorily for simple applications, like how I showed in my NodeMCU web server tutorial, there is a need …

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NodeMCU MQTT Tutorial

NodeMCU Webserver

So far, we've been using HTTP in our NodeMCU web servers and while it works, the protocol is not really the best way for sending and receiving small-sized data for IoT applications. In this tutorial, I will introduce you to NodeMCU MQTT.

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Log Data with NodeMCU and Google Sheets

nodemcu ajax dynamic sensor data

Most of the time, the data from a sensor in an IoT application needs to be recorded. This data logging is important for later statistical analysis now most popularly known as data analytics. In this tutorial, we will record the data captured from the sensor to a spreadsheet. Let's build …

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