Introduction: ESP8266 Web Server (Without Arduino)A few weeks ago I've created a project with an ESP8266 called: ESP8266 Web Server without an Arduino. That's exactly what you're going to build, if you follow all the steps in this Instructable. It's amazing what you can do with this $4 WiFi Module.
Memory: 32 KiB instruction RAM. 32 KiB instruction cache RAM. 80 KiB user-data RAM.
NodeMCU is a microcontroller development board with wifi capability. It uses an ESP8266 microcontroller chip. Whereas Arduino UNO uses an ATMega328P microcontroller. Besides the chip, it contains other elements such as crystal oscillator, voltage regulator, etc.
To see if it works, open the Wi-Fi settings on your computer, look for a network called "ESP8266 Access Point", enter the password "thereisnospoon", and connect to it. Then open a terminal, and ping to 192.168. 4.1 (this is the default IP address of our ESP AP). You'll see that the ESP responds to your pings.
The ESP32 is better than ESP8266. It provides you with a faster processor and good memory size, which allow considerable larger projects to be designed on only one SOC. ESP32 provides you with reliable and hi-tech security.
The SmartThings Hub is a Z-Wave certified central static controller. It can be included in any Z-Wave network and operate with Z-Wave certified devices from other manufacturers.
ZigBee is widely used to control several devices within the range of 10–100 m. The communication system is cost-effective and simple to use that any other short range wireless technology as Bluetooth and Wi-Fi (Fig. 17).
This is WiFi serial transceiver module, based on ESP8266 SoC. The SOC has Integrated TCP/IP protocol stack.It is TTL serial communication interface and its parameters can be set by AT command. It is widely used in networking, smart home project when it is connected to the wifi router.
WiFi can be good for IoT applications that don't have to worry about power drain (e.g. devices that are plugged into an outlet), that need to send a lot of data (e.g. video), and that don't need high range. A good example would be a home security system.
The ESP8266 is a system on a chip (SOC) Wi-Fi microchip for Internet of Things (IoT) applications produced by Espressif Systems. Given its low cost, small size and adaptability with embedded devices, the ESP8266 is now used extensively across IoT devices.best wifi module for iot