ESP8266 WI-FI Module : Pin Configuration & Its Applications

• ESP8266 is Wi-Fi is a system on chip (SoC) module developed by Espressif system.
• It is mostly used for the development of the Internet of Things (IoT) embedded applications.
• The ESP8266 is a low-cost Wi-Fi microchip with a full TCP/IP stack and microcontroller capability produced by Shanghai-based Chinese manufacturing company Espressif Systems.
• The ESP8266 is capable of either hosting an application or offloading all the Wi-Fi networking functions from another application processor.

PIN Configuration

• RX: Serial Receiver Pin
• Vcc: Power Pin (+3.3 V; can handle up to 3.6 V)
• GPIO 0: General-purpose I/O No. 0
• RST: Reset
• CH_PD: Chip power-down
• GPIO 2: General-purpose I/O No. 2
• TX: Serial Transmitter Pin
• GND: Ground

Applications of ESP8266 WI-FI Module

• Wireless Web Server
• Geolocation using ESP8266
• Pressure Sensors on Railway Tracks
• Air Pollution Meter
• Temperature logging system