ESP8266 button handle remote control ESP8266 remote control car (little yellow car version) ESP8266 remotely controls ESP8266 through MQTT protocol ESP8266 button handle code The MQTT server I built is EMQ. Tencent Cloud or Alibaba Cloud can be used. I have tutorials. If you need CSDN, leave your information and I will contact you. The […]
Tag: mqtt
mqtt combined with slq soil detection system – can be used with 5g module to achieve wireless transmission
Table of Contents Preface mqtt configuration Configuration of slq database Code writing for esp8266 Writing python code Various sensors cooperate with 2560 development board code Schematic diagram Foreword In this project, after communicating with the 2560 through various sensors, it is sent to the 8266 through the serial port to achieve ultra-long-distance transmission, because the […]
MQTT over QUIC – EMQX5&NanoMQ installation configuration
MQTT over QUIC – EMQX5 & amp;NanoMQ installation configuration Bridge topology diagram (personal understanding) Install and configure EMQX5 server Install server Configure server Install and configure client NanoMQ Install NanoMQ Configure NanoMQ bridge Start NanoMQ Test bridging Test message forwarding Test message reception Wireshark packet capture analysis Bridge topology diagram (personal understanding) Install and configure […]
esp32-S3 Topic 4: Protocol mqtt protocol usage
Directory 1. Concept 2. Code 2.1 Initialization 2.2 Subscription to topics and push 2.3 Callback function 3. mqtt server connection parameters 3.1 Three-code information 3.2 mqtt connection parameters 3.3 Code 4. Summary 1. Concept The MQTT protocol is a message protocol based on the publish-subscribe model under the ISO standard. It is based on the […]
STM32 sends data ESP8266 firmware burns MQTT and AT commands debugging and linking OneNET
Feed STM32 connects ESP8266 to send data to OneNET platform 0. Everything you need for the article can be downloaded for free by clicking on the resource package above. 1. Hardware model: ESP8266-01s and USBTTL interface module 2. Firmware: 1471_esp8266-at_mqtt-1m (MQTT transparent transmission AT firmware (firmware number: 1471)) 3. Firmware burning tool: flash_download_tool_3.9.4 Firmware download […]
Paho mqtt c library is compiled and used on window
Foreword Recently, I am working on a small project using the imx6ull board of Zhengdian Atom, using lvgl for GUI and mqtt for Internet of Things communication. I plan to write the lvgl interface and mqtt related code under the window platform first, and then transplant it to imx6ull. Port the lvgl library and mqtt […]
Hot Wheels X86 motherboard youyeetoo X1: Deploy MQTT Broker
Extra number, extra number. . . Shenzhen Hot Wheels Technology has launched a new product – youyeetoo X1. youyeetoo Aimed at the AIOT and automatic control market, the size is only the size of a palm (115 * 75mm), but the interface is very rich. It has built-in 3-channel serial port UART, 2-channel HDMI, 6-channel […]
MQTT server source code analysis
Table of Contents 1. Regarding header issues 2. Use of MQTT connection parameters 2.1 Connection address 2.2 TCP-based MQTT connection 2.3 WebSocket-based connection 3. Subscribe to topic 4. Push messages to subscribers 5. QOS mechanism 5.1 What is QOS 5.2 Implementation principle of QOS 5.3 Sending process 6.reatain mechanism Summary: Leave a message to those […]
Use the SpringBoot project to connect mqtt to implement message processing between publishers and subscribers
Build MQTT server and client (Windows): https://blog.csdn.net/weixin_42113716/article/details/133821761?csdn_share_tail={“type”:”blog”,”rType”:”article”,” rId”:”133821761″,”source”:”weixin_42113716″} Project structure: 1. The first step is to add the pom package: <!–mqtt–> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-integration</artifactId> </dependency> <dependency> <groupId>org.springframework.integration</groupId> <artifactId>spring-integration-stream</artifactId> </dependency> <dependency> <groupId>org.springframework.integration</groupId> <artifactId>spring-integration-mqtt</artifactId> </dependency> 2. In the second step, add the yml file as follows: server: port: 9999 spring: mqtt: username: admin # Username password: admin_public […]
The springboot project integrates MQTT through EMQX
To record a project requirement that requires the use of the emqx platform and the mqtt protocol, you must first install and build emqx. The official website can be installed according to the requirements. This article is reproduced for reference in – java connecting to MQTT server (Springboot integrates MQTT)_mqtt java-CSDN blog 1. First, introduce […]