WiFi module ESP-01S ESP8266EX Arduino

ESP-01S is a very popular WiFi module used in the broadly understood IoT. The board has an ESP8266EX chip by Espressif with 1MB Flash memory. The ESP8266EX uses the Tensilica L106 32-bit RISC processor for ultra-low power consumption and a maximum clock speed of 160MHz. The WiFi antenna is located on the PCB, so there is no need for an external antenna. There is a pin map on the bottom of the PCB.

ESP-01S is an upgraded version of ESP-01. One of the amendments is the addition of pull-up resistors on the RST and CS lines. Thanks to this solution, there is no need to connect them in order to program the system. The stability of the work has also been improved, and the range has also been slightly increased.

The module can be programmed using the scripting language LUA, with the Arduino IDE or AT commands.

Specification:

CPU: ESP8266EX

Core: Tensilica L106 32-bit

Supply voltage: 3.3V

Current consumption: 80 mA average

Flash memory: 1 MB

Compatible with WiFi 802.11 b, g, n standard

Working frequency: 2.4 GHz ~ 2.5 GHz (2400 MHz ~ 2483.5 MHz)

WiFi Security: WPA / WPA2

WiFi operation: AP (Access Point), STA (Standalone) and AP + STA

Transmitter power (802.11 b / g / n): + 20 / + 17 / + 14 dBm

· Supported network protocols: IPv4, TCP / UDP / HTTP

Working temperature: –40 ° C ~ 125 ° C

GPIO ports: 2

UART interface for communication with an external microcontroller or ESP8266EX programming on the board

Leads pitch: 2.54 mm

Built-in PCB antenna

Dimensions: 24.8 x 16 mm