Robots are used in many sectors like construction, military, manufacturing, assembling, etc. Robots can be autonomous or semi-autonomous. Autonomous robots do not require any human intervention and can act on their own according to the situation.

IoT has taken off in a big way with companies like Intel, Google and Samsung all rushing for a piece of the pie. The existence of devices such as the Raspberry Pi and NodeMCU has also led to the existence of a significant hobbyist community.

There are number of communication technologies available for interaction between IoT devices today, and the most popular ones are Wi-Fi and Bluetooth. But the problem with Wi-Fi and Bluetooth technology is high power consumption.

RF communication is one of the most used communication technique in IoT applications, and we previously used 433 MHz RF modu

The RF module consists of a 433 MHz RF transmitter and receiver modules. These are ASK (Amplitude shift keying) or OOK (Of Hook Keying) type RF modules.

In previous tutorial, we built an Alexa controlled Home Automation system using NodeMCU. It was easy to build and implement.

The traditional method of taking attendance manually is very time consuming and often times leads to human error. The manual system is also prone to misconduct and the valuable work time gets wasted in organizing and structuring attendance data.

Have you ever thought of controlling your Arduino board remotely without using any shield or module like ESP8266 and Bluetooth? Yes, it is possible with the help of the Blynk App and its server.

Node-RED is a visual tool for non-programmers to work with the Internet of Things, it can be used to build application fasters and reduce the “go to market” time for IoT products.

Global warming has lead to unpredictable climates; researchers around the world are using weather stations to observe record and analyze weather patterns to study climate changes and provide weather forecasts.