NodeMCU V2 WiFi module - wireless module based on ESP8266-12E - tested

Popular PCB with built-in WiFi ( ESP8266-12E ). It gives great possibilities of use in projects where wireless connectivity is required.

The module is programmed via the Micro USB connector. The board is compatible with Arduino, MicroPython and NodeMCU.

We have 10 GPIO ports at our disposal. Each of them supports PWM, I2C, SPI and 1-Wire. There is a 3.3V voltage regulator on the board, so it can be powered from the USB port.

Tested:

The module is tested to avoid a situation where our customer would get a damaged PCB. A simple WiFiScan program is loaded on the board. After plugging in the USB cable and setting the serial port speed to 115200 on Serial, you will get a list of WiFi networks that the NodeMCU sees, scan every few seconds.

Technical data:

• The module is based on the ESP8266-12E system with a PCB antenna
• Wi-Fi connectivity in the 802.11 b / g / n standard
• Works in AP (Access Point), STA (Standalone), AP + STA modes
• Supports TKIP, WEP, CRC, CCMP, WPA / WPA2, WPS
• Power supply: 3.3V (or 5V via USB port)
• RISC 80MHz processor
• 10 GPIO ports - PWM / I2C / SPI / 1-Wire
• Maximum current on I / O pins: 12mA
• USB-UART converter - CP2102
• ADC converter - 10-bit
• 30 pins in 2.54mm pitch - Fits in contact plates
• Micro USB connector
• Dimensions: 49 x 25mm
• Two buttons: FLASH, used for programming, and RST (RESET)
• Blue LED connected to GPIO16

Materials

• Firmware for uploading to ESP can be downloaded from GitHub
• Documentation Lua for NodeMCU
• The set of AT commands can be found on the website nurdspace.nl
• Module wiki ESP8266
• A program that allows you to upload software ESPLORER
• Forum ESP8266 users
• Open project SUPLA - building automation based on ESP8266 and other modules