{"product_id":"nodemcu-v2-v3-esp8266-esp-12e-wifi-development-board-ch340-cp2102-ch9102x-arduino","title":"NodeMCU V2\/V3 ESP8266 ESP-12E WiFi Development Board | CH340 \/ CP2102 \/ CH9102X | Arduino IoT","description":"\u003ch2\u003eNodeMCU V2\/V3 ESP8266 ESP-12E WiFi Development Board — CH340 \/ CP2102 \/ CH9102X\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eNodeMCU ESP8266\u003c\/strong\u003e is the most popular low-cost WiFi development board in the maker and IoT community — combining the powerful ESP8266 WiFi SoC with a USB-to-UART bridge (CH340, CP2102, or CH9102X), 3.3V regulator, and all GPIO pins broken out on breadboard-compatible headers. Program it with the Arduino IDE, MicroPython, or Lua (NodeMCU firmware) to build WiFi-connected sensors, home automation devices, web servers, and IoT nodes. Available in V2 (narrower, breadboard-friendly) and V3 (wider, more GPIO access) form factors, with multiple USB-UART chip options for different OS compatibility requirements.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSoC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEspressif ESP8266 (ESP-12E \/ ESP-12F \/ ESP-12S module)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCPU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTensilica L106 32-bit RISC, 80\/160MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWiFi\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e802.11 b\/g\/n, 2.4GHz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFlash Memory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4MB (ESP-12E\/F\/S)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRAM\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e80KB user data RAM\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGPIO Pins\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e11 digital I\/O, 1 analogue input (ADC, 0–1V)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUSB-UART Options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCH340G \/ CP2102 \/ CH9102X\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupply Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.3V – 5V (via USB or VIN pin)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-45°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCE\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProgramming\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eArduino IDE, MicroPython, Lua (NodeMCU)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eUSB-UART Chip Comparison\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003eChip\u003c\/th\u003e\n\u003cth\u003eWindows\u003c\/th\u003e\n\u003cth\u003emacOS\u003c\/th\u003e\n\u003cth\u003eLinux\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCH340G\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e✅ (driver required)\u003c\/td\u003e\n\u003ctd\u003e✅ (driver required)\u003c\/td\u003e\n\u003ctd\u003e✅ (built-in)\u003c\/td\u003e\n\u003ctd\u003eMost common, lowest cost\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCP2102\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e✅ (driver required)\u003c\/td\u003e\n\u003ctd\u003e✅ (driver required)\u003c\/td\u003e\n\u003ctd\u003e✅ (built-in)\u003c\/td\u003e\n\u003ctd\u003eMore reliable on macOS, higher quality\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCH9102X\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e✅ (driver required)\u003c\/td\u003e\n\u003ctd\u003e✅ (driver required)\u003c\/td\u003e\n\u003ctd\u003e✅ (built-in)\u003c\/td\u003e\n\u003ctd\u003eNewer chip, good macOS compatibility\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eV2 vs. V3 Form Factor\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003eVersion\u003c\/th\u003e\n\u003cth\u003eWidth\u003c\/th\u003e\n\u003cth\u003eBreadboard\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNodeMCU V2\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNarrower\u003c\/td\u003e\n\u003ctd\u003eFits standard breadboard with 1 row free each side\u003c\/td\u003e\n\u003ctd\u003ePreferred for breadboard prototyping\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNodeMCU V3\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWider\u003c\/td\u003e\n\u003ctd\u003eSpans full breadboard width\u003c\/td\u003e\n\u003ctd\u003eMore GPIO access, larger USB connector\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eESP8266 WiFi SoC\u003c\/strong\u003e — full TCP\/IP stack, 802.11 b\/g\/n WiFi, 80\/160MHz CPU\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eArduino IDE compatible\u003c\/strong\u003e — program with familiar Arduino syntax using the ESP8266 Arduino core\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eMicroPython support\u003c\/strong\u003e — run Python scripts directly on the board for rapid prototyping\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eUSB programming\u003c\/strong\u003e — no external programmer needed, program directly via USB\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003e3.3V and 5V compatible\u003c\/strong\u003e — power via USB or external 3.3–5V supply\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003e4MB flash\u003c\/strong\u003e — ample storage for firmware, web pages, and data logging\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eCE certified\u003c\/strong\u003e — meets European radio and electrical safety standards\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eMultiple USB-UART options\u003c\/strong\u003e — choose CH340, CP2102, or CH9102X for your OS and driver preference\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCommon Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eWiFi-connected temperature and humidity sensors (DHT11\/DHT22)\u003c\/li\u003e\n  \u003cli\u003eHome automation and smart home control nodes\u003c\/li\u003e\n  \u003cli\u003eMQTT IoT data publishing to cloud platforms (AWS, Azure, Home Assistant)\u003c\/li\u003e\n  \u003cli\u003eWeb server hosting on local network\u003c\/li\u003e\n  \u003cli\u003eWiFi relay and smart switch control\u003c\/li\u003e\n  \u003cli\u003eOTA (over-the-air) firmware update systems\u003c\/li\u003e\n  \u003cli\u003eWireless data logging and monitoring\u003c\/li\u003e\n  \u003cli\u003eESP-NOW peer-to-peer wireless communication\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eArduino IDE Setup\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003eOpen Arduino IDE → File → Preferences → Additional Boards Manager URLs.\u003c\/li\u003e\n  \u003cli\u003eAdd: \u003ccode\u003ehttp:\/\/arduino.esp8266.com\/stable\/package_esp8266com_index.json\u003c\/code\u003e\n\u003c\/li\u003e\n  \u003cli\u003eGo to Tools → Board → Boards Manager, search “ESP8266”, install.\u003c\/li\u003e\n  \u003cli\u003eSelect Tools → Board → NodeMCU 1.0 (ESP-12E Module).\u003c\/li\u003e\n  \u003cli\u003eSelect the correct COM port and upload your sketch.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between ESP-12E, ESP-12F, and ESP-12S?\u003c\/strong\u003e\u003cbr\u003eA: All three are ESP8266 modules with 4MB flash. ESP-12F has improved antenna performance over ESP-12E. ESP-12S has a simplified design. For most projects, the differences are negligible.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I power this from a 5V supply?\u003c\/strong\u003e\u003cbr\u003eA: Yes. The onboard 3.3V regulator accepts 5V input via the VIN pin or USB. The ESP8266 GPIO pins operate at 3.3V — do not connect 5V signals directly to GPIO pins.\u003c\/p\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1× NodeMCU ESP8266 Development Board (version and USB-UART chip as selected)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"ESP-12S","offer_id":46991424880875,"sku":"14:366#ESP-12S","price":6.4,"currency_code":"USD","in_stock":true},{"title":"ESP-12F","offer_id":46991424913643,"sku":"14:193#ESP-12F","price":5.96,"currency_code":"USD","in_stock":true},{"title":"ESP-12E","offer_id":46991424946411,"sku":"14:175#ESP-12E","price":5.96,"currency_code":"USD","in_stock":true},{"title":"NodeMcu v3 CH9102X","offer_id":46991424979179,"sku":"14:201659813#NodeMcu v3 CH9102X","price":10.36,"currency_code":"USD","in_stock":true},{"title":"1set NodeMcu CP2102","offer_id":46991425011947,"sku":"14:351074#1set NodeMcu CP2102","price":12.96,"currency_code":"USD","in_stock":true},{"title":"1set NodeMcu v3","offer_id":46991425044715,"sku":"14:1202#1set NodeMcu v3","price":10.36,"currency_code":"USD","in_stock":true},{"title":"NodeMcu v3 CH340","offer_id":46991425077483,"sku":"14:350852#NodeMcu v3 CH340","price":8.0,"currency_code":"USD","in_stock":true},{"title":"NodeMcu v3 CP2102","offer_id":46991425110251,"sku":"14:4044226#NodeMcu v3 CP2102","price":11.56,"currency_code":"USD","in_stock":true},{"title":"CH340G Adapter","offer_id":46991425143019,"sku":"14:173#CH340G Adapter","price":6.2,"currency_code":"USD","in_stock":true},{"title":"CP2102 Adapter","offer_id":46991425175787,"sku":"14:94#CP2102 Adapter","price":6.6,"currency_code":"USD","in_stock":true},{"title":"NodeMcu Lua CH340G","offer_id":46991425208555,"sku":"14:29#NodeMcu Lua CH340G","price":9.16,"currency_code":"USD","in_stock":true},{"title":"NodeMcu Lua CP2102","offer_id":46991425241323,"sku":"14:10#NodeMcu Lua CP2102","price":11.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/nodemcu-v2-v3-esp8266-esp12e-wifi.webp?v=1761889057","url":"https:\/\/keszoox.com\/products\/nodemcu-v2-v3-esp8266-esp-12e-wifi-development-board-ch340-cp2102-ch9102x-arduino","provider":"Keszoox","version":"1.0","type":"link"}