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| Project owner: | lichnak, PeterBay |
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| Reference: | https://Espressif.com |
| License: | Uveďte původ-Zachovejte licenci; CC BY-SA |
NodeMCU
Last big news in area of cheap IoT devices is wireless microcontroller ESP8266 produced by chinnes manufaturer Espressif Systems. Initial idea was to build functinal UART bridge with WiFi for avaiable microcontrollers. Nevertheless, ESP8266 microcontroller based on procesosor 32-bit Tensilica Xtensa LX106 running on frequency 80 MHz with integrated WiFi Kit was designed and produced.
NodeMCU is open-source firmware and hardware developer kit, which speeds up IoT prototypes development in few lines of LUA scripts. NodeMCU firmware is made for chip ESP8266 WiFi SOC and brings LIU scripting enviranment naseb on eLua language. NodeMCU developer kit for ESP8266 implements GPIO, PWM, IIC, 1-Wirend a ADC on singleboard.
nodeMCU Firmware NodeMCU Github
Developer Kit v1.0 NodeMCU DevKit 1.0 Github
Hardware
NodeMCU hardware is equipped by microcontroller unit ESP8266 with embedded WiFi transceiver, as well by chip for communication on USB through serial port 'USB to UART' CP2102-9, Low-Noise LDO Voltage Regulator SPX3819, safe voltage drop with schottky barrier rectifier SS12 and two buttons for reset RST and flash mode FLASH PTS820
Technical parameters
- CPU: 80/160 MHz Tensilica Xtensa LX106
- RAM: 64 KiB of instruction RAM, 96 KiB of data RAM
- Flash: 512M - 4M, depends on model of ESP8266
- Embedded WiFi transceiver
- 16 GPIO pins, SPI, I2C, I2S, UART, 10-bit ADC
Diagrams
NODEMCU_DEVKIT documentation and drawings for each nodeMCU part is located on GitHub.
PIN Map
