{"product_id":"mini-d1-pro-esp8266-wifi-development-board-nodemcu-4mb-16mb-antenna-iot","title":"Mini D1 PRO ESP8266 WiFi Development Board | NodeMCU Lua | 4MB \/ 16MB Flash | External Antenna Option | IoT","description":"\u003ch2\u003eMini D1 PRO ESP8266 WiFi Development Board — NodeMCU Lua | 4MB \/ 16MB Flash | External Antenna Option\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eMini D1 PRO\u003c\/strong\u003e is an upgraded ESP8266-based WiFi development board in a compact form factor — a significant improvement over the standard D1 Mini with larger flash memory options (4MB or 16MB) and an optional external antenna connector for extended WiFi range. The ESP8266 is the most widely used WiFi SoC in the maker and IoT community, combining a 32-bit Tensilica L106 processor with 802.11 b\/g\/n WiFi in a single chip. The NodeMCU Lua firmware is pre-loaded, and the board is fully compatible with the Arduino IDE via the ESP8266 Arduino core — enabling Arduino-style programming with WiFi connectivity for smart home, IoT sensor, and wireless control applications.\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\u003eESP8266 (Tensilica L106, 80\/160MHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWiFi Standard\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 or 16MB (as selected)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAntenna\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePCB trace antenna (standard) \/ External antenna connector (optional)\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 analog input (A0, 0–3.3V)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommunication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUART, I2C, SPI, PWM\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUSB Interface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMicro USB (CH340 USB-UART bridge)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupply Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5V via USB \/ 3.3V via pin\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.3V (GPIO logic level)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFirmware\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNodeMCU Lua (pre-loaded)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eArduino IDE\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCompatible (ESP8266 Arduino core)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eMini D1 PRO vs. Standard D1 Mini\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eMini D1 PRO (this product)\u003c\/th\u003e\n\u003cth\u003eStandard D1 Mini\u003c\/th\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eFlash memory\u003c\/td\u003e\n\u003ctd\u003e4MB or 16MB\u003c\/td\u003e\n\u003ctd\u003e4MB\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eExternal antenna\u003c\/td\u003e\n\u003ctd\u003eOptional (IPEX connector)\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWiFi range\u003c\/td\u003e\n\u003ctd\u003eExtended (with external antenna)\u003c\/td\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eForm factor\u003c\/td\u003e\n\u003ctd\u003eCompact (same as D1 Mini)\u003c\/td\u003e\n\u003ctd\u003eCompact\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eArduino IDE\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBest for\u003c\/td\u003e\n\u003ctd\u003eLong-range WiFi, large firmware projects\u003c\/td\u003e\n\u003ctd\u003eStandard IoT projects\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 SoC\u003c\/strong\u003e — 802.11 b\/g\/n WiFi + 32-bit processor in a single chip\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003e4MB or 16MB flash\u003c\/strong\u003e — 16MB option supports larger firmware, OTA updates, and SPIFFS file storage\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eExternal antenna option\u003c\/strong\u003e — IPEX connector for external antenna, extending WiFi range through walls and over longer distances\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eNodeMCU Lua pre-loaded\u003c\/strong\u003e — ready to use with Lua scripting immediately after unboxing\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\u003eMicro USB programming\u003c\/strong\u003e — no external programmer needed, program directly via USB\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003e3.3V GPIO logic\u003c\/strong\u003e — compatible with 3.3V sensors and modules (use level shifter for 5V devices)\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eCompact form factor\u003c\/strong\u003e — D1 Mini compatible footprint, fits D1 Mini shields and accessories\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCommon Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSmart home sensor node (temperature, humidity, motion)\u003c\/li\u003e\n  \u003cli\u003eWiFi-controlled relay and switch\u003c\/li\u003e\n  \u003cli\u003eMQTT IoT data publisher\u003c\/li\u003e\n  \u003cli\u003eWeb server and REST API endpoint\u003c\/li\u003e\n  \u003cli\u003eOTA (over-the-air) firmware update projects\u003c\/li\u003e\n  \u003cli\u003eWiFi weather station\u003c\/li\u003e\n  \u003cli\u003eRemote monitoring and control\u003c\/li\u003e\n  \u003cli\u003eHome automation integration (Home Assistant, ESPHome)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eArduino IDE Setup\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003eInstall the CH340 USB driver if not already installed.\u003c\/li\u003e\n  \u003cli\u003eIn Arduino IDE, go to File \u0026gt; Preferences and add the ESP8266 board manager URL: \u003ccode\u003ehttp:\/\/arduino.esp8266.com\/stable\/package_esp8266com_index.json\u003c\/code\u003e\n\u003c\/li\u003e\n  \u003cli\u003eInstall the ESP8266 board package via Tools \u0026gt; Board \u0026gt; Boards Manager.\u003c\/li\u003e\n  \u003cli\u003eSelect \u003cstrong\u003eLOLIN(WEMOS) D1 mini PRO\u003c\/strong\u003e as the board.\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 4MB and 16MB flash?\u003c\/strong\u003e\u003cbr\u003eA: 4MB flash is sufficient for most Arduino sketches and NodeMCU Lua scripts. 16MB flash is recommended for projects using SPIFFS (file system), large web server assets, OTA updates, or complex firmware. The 16MB version also supports larger Lua scripts and more stored data.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the external antenna version better for all applications?\u003c\/strong\u003e\u003cbr\u003eA: The external antenna version provides better range through walls and over longer distances. For applications within 10–15 metres of the router with no obstructions, the PCB antenna version is adequate. For basement installations, metal enclosures, or long-range applications, choose the external antenna version.\u003c\/p\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1× Mini D1 PRO ESP8266 WiFi Development Board (flash size and antenna option as selected)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"16MB","offer_id":46985498198251,"sku":"14:4044226#16MB","price":25.24,"currency_code":"USD","in_stock":true},{"title":"4MB","offer_id":46985498231019,"sku":"14:351074#4MB","price":22.8,"currency_code":"USD","in_stock":true},{"title":"16MB Add the antenna","offer_id":46985498263787,"sku":"14:350852#16MB Add the antenna","price":29.64,"currency_code":"USD","in_stock":true},{"title":"4MB Add the antenna","offer_id":46985498296555,"sku":"14:1202#4MB Add the antenna","price":25.44,"currency_code":"USD","in_stock":true},{"title":"antenna","offer_id":46985498329323,"sku":"14:201659813#antenna","price":7.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/mini-d1-pro-esp8266-wifi-nodemcu-lua.webp?v=1761284460","url":"https:\/\/keszoox.com\/products\/mini-d1-pro-esp8266-wifi-development-board-nodemcu-4mb-16mb-antenna-iot","provider":"Keszoox","version":"1.0","type":"link"}