In order to meet the wireless communication requirements of the Internet of Things, SKYLAB has launched a number of wireless modules that meet the application requirements of the Internet of Things. As mentioned by SKYLAB, this article will introduce the selection of UART WiFi modules in IoT applications from the design of smart sockets.
The first step is to understand the wireless module requirements for smart socket applications: Engineers who have an impression of the SKYLAB WiFi module application solution should remember that our WiFi modules are roughly divided into three categories: USB WiFi module, AP/Router WiFi module and UART WiFi module The main application field of the UART WiFi module is the field of IoT smart home. Compared with wireless video transmission solutions, which focus on transmission speed, smart home solutions like smart sockets focus more on low power consumption, stability, and easy expansion and connection to the grid. These three conditions are basically met by the UART WiFi module.
The second step is to clarify the design purpose of the smart socket solution: to break through the barriers of time and space, and to facilitate the user's mobile phone to realize the functions of wireless data transmission and control of the smart socket.
The third step is to clarify the design ideas of the smart socket solution: the smart socket needs to meet the following application requirements: in the case of home, the user's mobile phone APP connects to the WiFi through the router to control the switch of the built-in UART WiFi module smart socket to complete the power-on and power-off; Outdoors, users can control the switches at home through the cloud.
To meet the control needs of different time and different places, this is an important function development for the socket, and these functions can be realized through the UART WiFi module.
The fourth step, the working principle of the smart socket: the built-in UART WiFi module (WU106) in the smart socket, the user's mobile phone downloads the relevant APP, connects the WiFi through the router to establish a connection with the WiFi module in the smart socket, and obtains the control authority of the smart socket. control in the cloud.
UART WiFi Module WU106:
WU106 is a WiFi module that complies with the 802.11 b/g/n standard. The module integrates RF transceiver, MAC, baseband processing, WiFi protocol and configuration information and network protocol stack. Users can use it to easily realize the wireless network function of serial devices. , save development time, put products into the market faster, and enhance competitiveness.
Module Highlights:
Interface: UART, IIC, IIS/SPI, PWM, GPIO
Working mode: AP and Station mode
Serial port baud rate: 9600-115200
Antenna: IPEX socket external antenna or PCB antenna
When selecting a UART WiFi module, generally pay attention to these parameters of the WiFi module: size, package, frequency range, data rate, transmission rate, transmission distance, communication interface, power supply voltage, antenna interface, etc.