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NEC protocol infrared remote controller The communication distance of home appliance remote controller is often not high, and the cost of infrared is much lower than other wireless devices, so infrared always occupies a place in the application of home appliance remote controller. There are many baseband communication protocols for the r ...

1. Purpose of task priority table The priority table is used to indicate whether there are ready tasks under the corresponding priority. The operating system kernel always selects the task execution from the highest priority in the priority table, and the ready table is dynamically updated. For example, let's understand the task priority table ...

catalogue preface 1, Preparation tools 2, Construction of Baidu Tiangong Internet of things platform 3, Construction and code of Arduino IDE environment 4, Construction and code of wechat applet preface Based on MQTT protocol, with the help of Baidu Tiangong Internet of things platform and Arduino IDE burning program, wec ...

Tip: after the article is written, the directory can be generated automatically. Please refer to the help document on the right for how to generate it preface This paper is a summary of the official smart home DIY project of learning RT thread. It is developed based on RT thread studio, using stm32f103 as the node to send data and stm32 ...

Introduction to Internet of things and communication module Embedded Internet of things: ARM architecture certification, Huawei Internet of things certification, Ministry of industry and information technology Communication technology of Internet of things: wired communication Ethernet OSI7 layer network structure: Application layer: t ...

  in winter, most of us close doors and windows and rely on HVAC equipment to maintain indoor temperature. While ensuring the room temperature, we also hope to maintain the health of the atmospheric environment in the room. In view of this, we designed a simple indoor air quality detector. 1. System overview   we rely on HVAC equipm ...

Equipment telemetry and display 1, Basic equipment concept Observe the equipment panel, which is composed of the following parts: Attribute: basic information, relatively stableTelemetry: status information to be measuredWarning: there is a problem with the status of the device or device monitoringEvents: events that occur on the deviceA ...

summary perp is an excellent and low resource consuming open source multi process management framework, which is mostly used in embedded system environment. Since there are few resources on the Internet other than those on the official website, I'll record my previous experience and share it with you. Compared with restart D, perp has mor ...

Welcome new students ... ... If you are nameless, you can concentrate on practicing sword I am not a salted fish, but a dead fish! Common terms of Internet of vehicles security 0x01 train end       Internet of Vehicle (IoV) is a technology integrating mobile Internet and Internet ...

1, Chinese character coding rules 1) Location code It is stipulated in the national standard GD2312-80 that all national standard Chinese characters and symbols are allocated in a square matrix with 94 rows and 94 columns. Each row of the square matrix is called an "area", numbered from 01 to 94, and each column is called a &quo ...