MQTT

MQTT (MQ Telemetry Transport) is an open OASIS and ISO standard (ISO/IEC PRF 20922) lightweight, publish-subscribe network protocol that transports messages between devices. The protocol usually runs over TCP/IP; however, any network protocol that provides ordered, lossless, bi-directional connections can support MQTT. It is designed for connections with remote locations where a "small code footprint" is required or the network bandwidth is limited. MQTT is one of the most commonly used protocols in IoT projects. It stands for Message Queuing Telemetry Transport. In addition, it is designed as a lightweight messaging protocol that uses publish/subscribe operations to exchange data between clients and the server.

Main Content

Wifi MQTT Telegraph

“Using an ESP8266 NodeMCU module connected to an MQTT service, we achieve instant intercontinental communication! (One beep at a time.) Introduction In the era of zoom calls, messenger and Snapchat, communication across the globe has become trivial. But what if …

Augmented Reality (AR) with Internet of Things (IoT)

“This is fun project to demonstrate an integration of IoT sensor data on augmented reality dashboard using Unity and Vuforia. This is a demonstration of Augment Reality with Internet of Things. My home office temperature and humidity is displayed on …

b-parasite - An Open Source BLE Soil Moisture Sensor

“b-parasite is an ultra low power, open source Bluetooth Low Energy (BLE) soil moisture and ambient temperature/humidity sensor. Features - Soil moisture sensor. I wrote about how capacitive soil moisture sensors works on this Twitter thread, based on this great …

How to connect RPi Pico to WiFi and send phone notifications

“We show how to connect Pico to WiFi while maintaining low power and running it directly on AAA batteries In this project we show how to connect Raspberry Pi Picoto WiFi by using the Cricket WiFi moduleand send an alert …

FPrintCFSMQTT

“This is new version of an MQTT connected fingerprint sensor using capacitive sensor and OLED display, originally developed by Lewis Barcley, I have Home Assistant platform at home, which I am using, among several other things, to control home surveillance …

Remote On/Off Switch for Blynk Relay - using ThingsonEdge Cricket, Node Red, and MQTT

“Like most makers, my home is automated - not with off-the-shelf IoT devices, but with home-built switches and relays, Raspberry Pis and ESPs. My first remote switches - all controlled through ESP8266 01s- were mostly built with Blynk. I’d contentedly call …

Sofar2mqtt - Remote Control for Sofar Solar Inverters

“A smart home interface for Sofar solar and battery inverters. Supported models:ME3000SP and HYD-xx00 Sofar2mqtt is a remote control interface for Sofar solar and battery inverters. It allows remote control of the inverter and reports the invertor status …

Multiple IoT device communication on ESP32

“Goal The goal behind the project is to set a baseline example of how to setup communication between multiple IoT devices using MQTT protocol Introduction Internet of Things (IoT) has seen unprecedented change over the past few years changing the …

Build an MQTT Intercom with Wio Terminal

“Create your own wireless intercom for easy and non-intrusive communication around the house! Also doubles as a desk clock. In today’s article, we are going to build an Arduino wireless intercom with our Wio Terminal! This project sets up …

Make WiFi sensors and integrate with Node-RED on RPi

“Make in minutes a battery powered WiFi temperature sensor with GUI dashboard in Node-RED on Raspberry Pi! In this project we show how to build battery powered WiFi sensors (i.e. temperature), buttons or any other IOT end nodes …