mqtt

By Ashish Joy

Kavach is a desktop AI-assisted communication and smart-home support device designed specifically for elderly users who struggle with smartphones or modern digital interfaces. Inspired by the challenges faced by my own grandparents, who live alone and are digitally illiterate, this project aims to provide them with a…

By shiva shankar P

Most existing home automation systems emphasize remote access rather than intelligent automation. Users are required to manually select modes, configure schedules, or control devices individually through applications. This approach makes the system reactive and increases operational effort. From a system design…

Ever thought about how you could monitor the household energy usage of your home remotely without heavy hardware or a complex setup? To make this idea practical, we came up with this project: an IoT based Smart Energy Meter using MQTT with SMS alert.  Using the PZEM-004T sensor with ESP32, this smart energy meter using IoT provides real-time tracking of voltage…

If you've ever worked with a Raspberry Pi, you’ve probably run into that annoying moment when your Raspberry Pi just disappears from the network. You try to SSH into it or access a local web dashboard, but suddenly it's not there. You fire up the terminal and type ping raspberrypi.local, and nothing. It turns out, your router handed the Pi a different IP address this…

Rednexing, a North Carolina based startup,  is preparing to launch a Crowd Supply campaign for PowerTortoise IoT, an ESP32-based development board designed for ultra-low-power operation. Built to run on standard AA batteries for up to eight years, this device is perfect for monitoring temperature and humidity in hard-to-reach areas like attics, crawlspaces, and storage spaces where wired…

The IoT Pizza Finder project is an impressive endeavor that showcases the potential of IoT devices and web integration. Developed by a team of enthusiasts, it combines hardware components such as the Particle Boron microcontroller, Adafruit Ultimate GPS Breakout, and a 0.96" OLED display module to create a unique device with the capability…

In this project, we will make a device to detect if a person is wearing a mask and has a healthy heart rate using M5Stack Core2, ESP32-Cam, AWS IoT, and Edge Impulse. After the pandemic, most of the offices will start for on-site work and schools will start, during this time we also need to take care of any employee or student is having correct body…

Azure IoT Hub, the cloud computing service by Microsoft enables developers to connect, monitor, and manage billions of IoT devices on a single platform. It is already used in various IoT applications like home automation systems, security, surveillance, and monitoring systems. To demonstrate the capabilities of Azure IoT hub, we are going to build a…

Over the past few years, IoT (Internet of Things) devices have become an indistinguishable part of our daily lives. From smart homes, smart bulbs to smart appliances; creators and developers are incorporating this technology to create a network of connected devices that makes our day-to-day life a little more exciting. All this has been made possible because of the ease…

In previous tutorial we have discussed about MQTT Protocol and installed local MQTT server on our Raspberry Pi for controlling the GPIO locally. But the drawback of local MQTT server is that we cannot control the GPIOs from anywhere in the world, it only provides services locally. But if this MQTT server is hosted on some cloud then any appliances connected to Raspberry Pi…

MQTT is a protocol used to send and receive messages over internet. We previously used this protocol in Iot Electricity meter and Raspberry Pi Alexa to publish the data on internet. In this tutorial we will get to know more about the MQTT and the terms related to it. Here we will use the Raspberry Pi as local MQTT broker and control an LED connected to NodeMCU ESP12E through…