🔎 **MQTT hoạt động như thế nào trong IoT?**
Thay vì kết nối phức tạp, MQTT dùng mô hình cực thông minh:
👉 Publish / Subscribe
📌 Nghĩa là:
Client gửi dữ liệu 📤
Broker tiếp nhận 🧠
Broker phân phối 📡
💥 Nhờ vậy:
✔️ Giảm tải hệ thống
✔️ Tối ưu băng thông
✔️ Tăng độ ổn định
🚀 Đây chính là lý do MQTT trở thành “cầu nối” giữa IoT và Cloud!
👉 Xem chi tiết: https://nhanhoa.com/tin-tuc/mqtt-la-gi.html
So a small thing on #AI #llm code generation.
Something I’ve actually found it useful for, and feel comfortable using it for, is throwing together quick throwaway tooling for testing or debugging. Last night I was chasing down an issue in some #MQTT messages and being able to throw together a quick TUI that filtered out the noise to find just what I was looking for was very useful.
If I was ever going to turn that tool into something more permanent I’d rewrite it though.
Angefangen hat alles 1980. Seit 1990 selbstständig
Schnittstellen
#RS_232
#RS_422
#RS_485
#Ethernet
#WLAN
#Bluetooth
Protokolle
#Seriell
#LocalTalk
#EtherTalk
#TCP_IP
#UDP_IP
#CAN
#Modbus
#MIDI
#MQTT
Sprachen
#BASICA
#GW_Basic
#Pascal
#Delphi
#Modula_2
Formate
#File
#XML
#NMEA
#SMTP
#Syslog
Anwendungen
#TurboPascal
#Delphi
#Quark_XPress
#FileMaker
#Sketchup
Systeme
#PC_DOS
#MS_DOS
#Windows
#Macintosh
#macOS
Hardware
#IBM_PC
#IBM_AT
#Apple_SE30
#Apple_Macintosh_II_ci
#Apple_iMac
Um não tão novo post: do Blink para o controle remoto real — ESP32 + MQTT + Mosquitto local + app no celular.
O modelo pub/sub do MQTT encaixa bem em embarcados: o ESP32 não abre porta, não conhece o IP do cliente, só mantém conexão com o broker e reage a mensagens. O firmware fica event-driven, sem polling.
Documentei a arquitetura, o código completo em C com ESP-IDF, e os problemas que apareceram.
https://www.riverfount.dev.br/posts/controlando-hardware-pelo-celular-esp32-mqtt/
O post anterior mostrou o Blink — o Hello World do hardware embarcado. Um LED piscando sozinho, controlado por um timer, sem nenhuma interação externa. Era o suficiente para validar o ambiente, mas deixava uma pergunta óbvia no ar: e se a gente quiser controlar esse LED de verdade? De outro dispositivo, em tempo real, sem cabos? Essa pergunta levou ao experimento deste post: usar o protocolo MQTT para acionar um LED no ESP32 a partir de um celular, com um broker Mosquitto rodando localmente no PC. O resultado funcionou. O caminho até lá teve algumas surpresas que valem ser documentadas.
Moin Gemeinde,
Wenn man mit #homeassistant anfängt, hat man die Wahl bei Zigbee zwischen #zha (einfache Installation) oder #mqtt (nicht ganz so Einfach als Anfänger). Was man aber vorher Wissen sollte, dass man #zigbee2mqtt nehmen sollte, wenn man schon #huelampen besitzt. Denn bei #mqtt erhalten die Lampen auch ein Update. Habe ich in keinem Video gehört, zumindest bei denen die Ich mir angeschaut habe.
You can follow along with this #Radicle repository: https://app.radicle.xyz/nodes/iris.radicle.xyz/rad%3Az2WBfPYaj8wZd8P3eQDhAJMLQY62t
Current status: Writing an #MQTT client in C to integrate specifically with #Meshtastic
I don't know what this program is gonna do in the long term. In the short term, I'm looking to build a purpose-driven program for injecting malicious payloads and performing other devious tasks.
Vaillant eloBLOCK и atmoTEC в умном доме: интеграция через eBUS, ebusd и Home Assistant
Подробное руководство по подключению котлов Vaillant (электрического eloBLOCK и газового atmoTEC) к Home Assistant через протокол eBUS, демон ebusd и MQTT. Разбираем аппаратную часть, конфигурационные файлы, управление мощностью и автоматизацию отопления.
phanmemnhanhoa
VerneMQ
Matt Daubney
Wittenborner ✅
Riverfount 
Kaios Welt
Shawn Webb
Habr