Message Queuing Telemetry Transport (MQTT) Visualized, Explained #IoT #IoTuesday
James “Bald Engineer” Lewis delivers a primer for understanding MQTT.
In the case of MQTT, there is a broker, and there are clients. The broker is the “Post Office”, or in computer terms, the “server.”
Clients can publish (Pub) messages, or send letters, to the post office. Other clients can subscribe (Sub) to topics, or receive letters, from the post office. Moreover, clients can both publish and subscribe.
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.