{"product_id":"d1-wifi-development-board-esp12f-esp12e-uno-form-factor-esp8266-arduino","title":"D1 WiFi Development Board — ESP-12F\/ESP-12E, UNO Form Factor, ESP8266, Arduino IDE","description":"\u003ch2\u003eD1 WiFi Development Board — ESP-12F \/ ESP-12E, Arduino UNO Form Factor, ESP8266\u003c\/h2\u003e\u003cp\u003eThe D1 WiFi board integrates an ESP-12F (or ESP-12E) ESP8266 WiFi module onto an Arduino UNO-compatible form factor PCB, with a CH340 USB-to-UART chip for direct USB programming, onboard 3.3V regulator, and 5V input via USB or barrel jack. With 11 digital GPIO pins, 1 analog input, and full Arduino IDE compatibility, it is the easiest way to add WiFi to Arduino UNO-compatible shields and projects without any hardware modification.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiFi Module\u003c\/td\u003e\n\u003ctd\u003eESP-12F (ESP8266EX SoC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiFi Standard\u003c\/td\u003e\n\u003ctd\u003e802.11 b\/g\/n, 2.4GHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlash Memory\u003c\/td\u003e\n\u003ctd\u003e4MB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDigital GPIO\u003c\/td\u003e\n\u003ctd\u003e11 pins (3.3V logic)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalog Input\u003c\/td\u003e\n\u003ctd\u003e1× ADC (0–3.2V, 10-bit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUSB Interface\u003c\/td\u003e\n\u003ctd\u003eCH340G USB-to-UART (Micro USB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e5V (USB or barrel jack)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOnboard Regulator\u003c\/td\u003e\n\u003ctd\u003e3.3V \/ 500mA LDO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForm Factor\u003c\/td\u003e\n\u003ctd\u003eArduino UNO compatible (same header positions)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-40°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eD1 WiFi vs NodeMCU vs Wemos D1 Mini\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eD1 WiFi (UNO form)\u003c\/th\u003e\n\u003cth\u003eNodeMCU v3\u003c\/th\u003e\n\u003cth\u003eWemos D1 Mini\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForm factor\u003c\/td\u003e\n\u003ctd\u003eArduino UNO\u003c\/td\u003e\n\u003ctd\u003eCustom (30-pin)\u003c\/td\u003e\n\u003ctd\u003eMini (27×34mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShield compatible\u003c\/td\u003e\n\u003ctd\u003eYes (UNO shields)\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eD1 Mini shields only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGPIO count\u003c\/td\u003e\n\u003ctd\u003e11\u003c\/td\u003e\n\u003ctd\u003e11\u003c\/td\u003e\n\u003ctd\u003e11\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUSB chip\u003c\/td\u003e\n\u003ctd\u003eCH340G\u003c\/td\u003e\n\u003ctd\u003eCH340G \/ CP2102\u003c\/td\u003e\n\u003ctd\u003eCH340G\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBest for\u003c\/td\u003e\n\u003ctd\u003eUNO shield reuse, Arduino migration\u003c\/td\u003e\n\u003ctd\u003eBreadboard prototyping\u003c\/td\u003e\n\u003ctd\u003eCompact IoT nodes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose D1 WiFi Board?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eArduino UNO form factor\u003c\/strong\u003e — reuse existing Arduino UNO shields (sensor shields, relay shields, display shields)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlug-and-play USB programming\u003c\/strong\u003e — CH340G handles USB-to-UART, no external programmer needed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4MB flash\u003c\/strong\u003e — sufficient for OTA updates and large Arduino sketches with WiFi libraries\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5V input\u003c\/strong\u003e — powers from standard USB charger or Arduino-compatible 5V barrel jack\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull Arduino IDE support\u003c\/strong\u003e — program with ESP8266 board package, same as NodeMCU\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible With\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eArduino IDE\u003c\/strong\u003e: ESP8266 board package, select “WeMos D1 R1” or “Generic ESP8266” board\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArduino UNO shields\u003c\/strong\u003e: Sensor shields, relay shields, LCD shields (note: 3.3V GPIO, not 5V tolerant)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicroPython\u003c\/strong\u003e: Official ESP8266 MicroPython firmware\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eESPHome \/ Home Assistant\u003c\/strong\u003e: Direct smart home integration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLibraries\u003c\/strong\u003e: ESP8266WiFi, ESP8266HTTPClient, PubSubClient (MQTT), ArduinoOTA\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: Are D1 WiFi GPIO pins 5V tolerant like Arduino UNO?\u003c\/strong\u003e\u003cbr\u003eA: No — ESP8266 GPIO pins are 3.3V logic and NOT 5V tolerant. Applying 5V to any GPIO pin will damage the ESP8266. When using Arduino UNO shields, ensure all shield signals are 3.3V compatible or use level shifters. The D1 WiFi board’s 5V pin is for power only, not for GPIO signals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: How do I install the CH340 driver for D1 WiFi on Windows?\u003c\/strong\u003e\u003cbr\u003eA: Download the CH340 driver from the manufacturer website (WCH.cn). Install and restart. The D1 WiFi will appear as a COM port in Device Manager. In Arduino IDE, select the correct COM port and choose “WeMos D1 R1” as the board. Upload speed: 115200 baud.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can I use Arduino UNO relay shields with D1 WiFi?\u003c\/strong\u003e\u003cbr\u003eA: Yes, with caution. Most relay shields use optocouplers that accept 3.3V input signals, so they work with D1 WiFi GPIO. However, verify the relay shield’s input logic level before connecting. Relay shields that require 5V HIGH signal to trigger will not work reliably with 3.3V GPIO output.\u003c\/p\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e1× D1 WiFi Development Board (ESP-12F\/ESP-12E, Arduino UNO form factor)\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"D1 WiFi UNO type-c","offer_id":46991465316587,"sku":"14:351074#D1 WiFi UNO type-c","price":14.96,"currency_code":"USD","in_stock":true},{"title":"WeMos D1 R2 WiFi","offer_id":46991465349355,"sku":"14:4044226#WeMos D1 R2 WiFi","price":14.2,"currency_code":"USD","in_stock":true},{"title":"D1 WiFi UNO micro","offer_id":46991465382123,"sku":"14:1202#D1 WiFi UNO micro","price":14.2,"currency_code":"USD","in_stock":true},{"title":"D1 micro with cable","offer_id":46991465414891,"sku":"14:350852#D1 micro with cable","price":18.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/esp-12f-esp-12e-d1-wifi-development-board-esp8266-shield.webp?v=1761719921","url":"https:\/\/keszoox.com\/products\/d1-wifi-development-board-esp12f-esp12e-uno-form-factor-esp8266-arduino","provider":"Keszoox","version":"1.0","type":"link"}