Description

ESP8266 WIFI network module for Arduino

WiFi 802.11 b/g/n module at 2.4 GHz.

The module is used to communicate via the UART (RS232) serial interface – an ideal device for communicating an arduino with a computer or other WiFi device.

Technical data

• Supports WiFi standard: WiFi 802.11 b, g, n
• Can operate in AP (Access Point), STA (standalone) and AP+STA modes
• supports AT commands
• has a built-in antenna.
• has double-row leads – goldpin connectors.
• frequency: 2.4 GHz
• supply voltage: 3,3 V
• working voltage of the leads: 3,3 V
• current consumption: 300 mA
• supports WPA / WPA2 security
• communicates via a serial UART (RS232) interface
• has a built-in PCB antenna
• dimensions: 24x14mm
• Using a USB converter, you can program and transfer data directly from your computer

Description of connection and uses

• Temperature sensor design with WiFi
• Design and connection as a sensor
• WiFi range test on ESP8266 module

Pinout description and technical data

Leads on the module board – 8 pins, double row strip – goldpin raster 2.54 mm.

• VCC – Power supply 3.3 V, current consumption up to 300 mA.
• GND – Ground of the circuit.
• TxD – UART serial interface transmitter.
• RxD – UART serial interface receiver.
• RST – Reset circuit – activated by a low state.
• CH_PD – Pin for update, specify high state (3.3 V).
• GPIO0 – Pin for update, specify low state (connect to GND).
• GPIO2 – Should be left unconnected

Example connection

Video presentation of the installation