ESP8266 NodeMCU V2 Development Board Electrical Circuitry & Parts ESP8266 NodeMcu V3 development board CH-340

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SKU: 1842023_Tool_303 | Brand:

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Wireless 802.11 b / g / n standards;
Support STA / AP / STA + AP three operating modes;
Built-in TCP / IP protocol stack to support multiple TCP Client connection (5 MAX);
D0 ~ D8, SD1 ~ SD3: used as GPIO, PWM, IIC, etc. Port Drive 15mA;
AD0: 1 channel ADC;
Power input: 4.5V ~ 9V (10VMAX), USB-powered, providing USB debugging interface;
Current job: keep sending: ≈70mA (200mA MAX), Standby: <200uA;
Transfer rate: 110-460800bps;
Support UART / GPIO data communication interface;
Remote firmware upgrade (OTA);
Drive Type: Dual high-power H-bridge driver
Module Weight: about 7g

Open-source platform
Interactive & Programmable
WiFi enabled
Arduino IDE compactible
Nodejs style network API
ESP8266, a low cost WiFi module on-board (FCC Certified)
On-board USB-TTL converter, plug & play
Headers – 2.54mm 15-pin header with access to GPIOs, SPI, UART, ADC, and power pins
Input Voltage: 7 – 12V
Operating Voltage: 3.3V
CPU: 32-bit RISC Tensilica Xtensa LX106 running at 80 MHz
64 KB of instruction RAM, 96 KB of data RAM (80x Arduino UNO!)
512 KB of EEPROM (512x Arduino UNO!)
External QSPI flash – 512 KB to 4 MB* (up to 16 MB is supported)
IEEE 802.11 b/g/n Wi-FiIntegrated TR switch, balun, LNA, power amplifier and matching network
WEP or WPA/WPA2 authentication, or open networks
Digital I/O Pins (DIO): 16
Analog Input Pins (ADC): 1
UARTs: 1 on dedicated pins, plus a transmit-only UART can be enabled on GPIO2
SPIs: 1
I2Cs: 1
Flash Memory: 4 MB
SRAM: 64 KB
Clock Speed: 80 Mhz