Category: NodeMCU

Log Temperature Sensor Data to Google Sheet using NodeMCU ESP8266

There are many IoT clouds available to store and monitor the data from various sensors. With increasing popularity of IoT, more number of sensors are used every day and these sensors produce anonymous data which are useful to control other devices on the IoT network. These data can be studied further and used to modify design or improve the system performance. The Applications of Data Logging is vast and can be applied in Research Centres, Scientific Labs, Operation Theatres, Patient Monitoring System and many more.

Check out this useful DIY IoT tutorial:

Interfacing OLED Display with NodeMCU ESP8266

In this tutorial we will use SPI protocol to interface Monochrome 7-pin SSD1306 0.96 OLED Display with NodeMCUand will learn to display image on OLED screen with NodeMCU ESP8266.

Find the project here:

Programming NodeMCU ESP8266 Over-the-Air (OTA) using Arduino IDE

OTA Programming (Over the Air) is a process which allows devices to upgrade their firmware or software wirelessly without any physical access. It uses wireless technology like Wi-Fi, Bluetooth, GPRS or 4G/3G rather than wired serial communication. OTA is used to reprogram the devices like microcontrollers, cellphones, computers, set-top box etc. OTA updates are generally sent for updating the software, resolving the bugs, adding some features etc. With the increasing use of IoT devices OTA is transferred using frequency bands having low data transmission rate (868 MHz, 900 MHz, 2400 MHz).

Learn more:

ESP8266 Deep Sleep Mode Programming for Power Savings

This tutorial explains different sleep modes available in ESP8266 and demonstrate them by sending temperature data to Thingspeak server in a regular interval using the deep sleep mode. 

For the complete tutorial, visit:

How to Build NodeMCU Webserver and control an LED from a Webpage

To take you one step ahead towards IoT development, today we will make our own web server to host a webpage and control any appliance remotely from anywhere in the world. Here we will use ESP12E NodeMCU as webserver, although any ESP module can be used here. Learn more about various ESP modules and their projects here.

IoT Weather Station using NodeMCU

In this project, we will measure Humidity, Temperature and Pressure parameters and display them on the web server, which makes it a IoT based Weather Station where the weather conditions can be monitored from anywhere using the Internet.

Find the complete DIY project:

How to track Location with NodeMCU using Google Geolocation API

Have you ever thought of getting your device’s location without using any GPS hardware? Sounds interesting!! Yes it is possible to get the location coordinates just using NodeMCU ESP board without any extra hardware. Here we will use ESP12E board to get live co-ordinates of our location. This becomes possible because of Google’s Geolocation API. So let’s see how this Geolocation API works and how we are able to get the location using this.

DIY Wi-Fi Jammer using NodeMCU ESP12

There is a Wi-Fi protocol called 802.11 which act as a deauthentication frame. This is used to safely disconnect all the users connected with the router. To disconnect any device from some Wi-Fi network, it is not important to know the password or to be in the network, you just need mac address of the Wi-Fi router and client device and it is enough to be in its range of that Wi-Fi network.

Find here the complete DIY tutorial:

Alexa Voice Controlled LED using Raspberry Pi and ESP12

In previous tutorials we have seen How we can build an Amazon Echo Speaker and then how can we control any Raspberry Pi GPIO using Alexa Voice. Now we are making an IoT project to control home appliances from anywhere in the world using AlexaPi and ESP-12E (or any ESP board). 

Find the project details here:

ESP32 Internet Clock

To minimize hardware requirements we will make Internet clock without using RTC module. This is more accurate as compare to RTC clock. ESP32 is a Wi-Fi module and can be easily connected to the internet so we will use NTP (Network Time Protocol) and UDP (User Datagram Protocol) to fetch Time from the internet using Wi-Fi.

Check the complete project here: