{"product_id":"nodemcu-v3-esp8266-wifi-development-board-ch340-lua-arduino-pcb-antenna-iot","title":"NodeMCU V3 ESP8266 WiFi Development Board — CH340, Lua\/Arduino IDE, PCB Antenna, IoT","description":"\u003ch2\u003eNodeMCU V3 ESP8266 WiFi Development Board — CH340, Lua\/Arduino IDE, PCB Antenna\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eNodeMCU V3\u003c\/strong\u003e is the most popular ESP8266-based development board — combining the ESP-12E\/F WiFi module with a CH340 USB-to-serial chip, 3.3V regulator, and breadboard-friendly pin layout. Programmable in Lua (NodeMCU firmware), MicroPython, or Arduino IDE (with ESP8266 board package). Supports AP, STA, and AP+STA WiFi modes, LWIP TCP\/IP stack, and FreeRTOS for multitasking IoT applications.\u003c\/p\u003e\n\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWiFi Module:\u003c\/strong\u003e ESP-12E or ESP-12F (ESP8266EX)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCPU:\u003c\/strong\u003e Xtensa L106 @ 80\/160MHz\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlash:\u003c\/strong\u003e 4MB\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSRAM:\u003c\/strong\u003e 64KB instruction \/ 96KB data\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGPIO:\u003c\/strong\u003e 11 digital I\/O pins\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eADC:\u003c\/strong\u003e 1 × 10-bit (0–3.3V)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUSB Chip:\u003c\/strong\u003e CH340G\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAntenna:\u003c\/strong\u003e PCB trace antenna (on-board)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWiFi:\u003c\/strong\u003e 802.11 b\/g\/n (2.4GHz)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWiFi Modes:\u003c\/strong\u003e AP \/ STA \/ AP+STA\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProgramming Options\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eArduino IDE:\u003c\/strong\u003e Install ESP8266 board package — familiar C++ environment\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLua (NodeMCU):\u003c\/strong\u003e Event-driven, Node.js-style API — for rapid IoT prototyping\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMicroPython:\u003c\/strong\u003e Python 3 subset — for Python developers\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAT Commands:\u003c\/strong\u003e Use as WiFi modem via UART from another MCU\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eNodeMCU V3 vs V2 vs D1 Mini\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNodeMCU V3 (this board):\u003c\/strong\u003e Wider PCB (fits breadboard with 1 row free each side), CH340 USB — most common version\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNodeMCU V2:\u003c\/strong\u003e Narrower PCB, CP2102 USB — slightly more compact\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD1 Mini:\u003c\/strong\u003e Much smaller, fewer pins exposed — for space-constrained projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eHome automation (MQTT, ESPHome, Tasmota)\u003c\/li\u003e\n  \u003cli\u003eWiFi sensor node (temperature, humidity, air quality)\u003c\/li\u003e\n  \u003cli\u003eWeb server and REST API endpoint\u003c\/li\u003e\n  \u003cli\u003eOTA-updatable IoT device\u003c\/li\u003e\n  \u003cli\u003eWiFi-controlled LED strip (WLED)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eNodeMCU V3 ESP8266 board — CH340, 4MB flash, Lua\/Arduino IDE, PCB antenna, AP\/STA\/AP+STA for IoT, home automation, and wireless sensor projects.\u003c\/p\u003e","brand":"Keszoox","offers":[{"title":"TYPE-C Usb","offer_id":46991445983467,"sku":"14:29#TYPE-C Usb","price":8.16,"currency_code":"USD","in_stock":true},{"title":"Micro USB","offer_id":46991446016235,"sku":"14:10#Micro USB","price":7.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/nodemcu-v3-esp8266-wifi-development-board-iot-lua-arduino.webp?v=1761806021","url":"https:\/\/keszoox.com\/products\/nodemcu-v3-esp8266-wifi-development-board-ch340-lua-arduino-pcb-antenna-iot","provider":"Keszoox","version":"1.0","type":"link"}