--- product_id: 407644160 title: "KeeYees ESP8266 ESP-12F Mini WLAN WiFi Development Board 4M Bytes for Arduino for NodeMcu for WeMos (5PCS)" brand: "keeyees" price: "Β£1.34" currency: GBP in_stock: false url: https://www.desertcart.co.uk/products/407644160-keeyees-esp8266-esp-12f-mini-wlan-wifi-development-board-4m store_origin: GB region: United Kingdom --- # 4M Flash Memory Micro USB Power & Data 11 I/O Pins with PWM & I2C KeeYees ESP8266 ESP-12F Mini WLAN WiFi Development Board 4M Bytes for Arduino for NodeMcu for WeMos (5PCS) **Brand:** keeyees **Price:** Β£1.34 **Availability:** ❌ Out of Stock ## Summary > πŸš€ Unlock your IoT potential with KeeYees ESP8266 – where innovation meets compact power! ## Quick Answers - **What is this?** KeeYees ESP8266 ESP-12F Mini WLAN WiFi Development Board 4M Bytes for Arduino for NodeMcu for WeMos (5PCS) by keeyees - **How much does it cost?** Β£1.34 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/407644160-keeyees-esp8266-esp-12f-mini-wlan-wifi-development-board-4m) ## Best For - keeyees enthusiasts ## Why This Product - Trusted keeyees brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Versatile Pin Control:** 11 digital I/O pins supporting interrupts, PWM, I2C, and one-wire protocols for ultimate project flexibility. - β€’ **Massive 4MB Flash Storage:** Ample onboard memory to handle complex Arduino, NodeMCU, and WeMos projects effortlessly. - β€’ **Plug & Play USB Interface:** Micro USB port for easy power supply and programmingβ€”no extra adapters needed. - β€’ **Seamless WiFi Integration:** Built-in ESP8266 chip with 802.11b WiFi for instant IoT connectivity. - β€’ **Comprehensive Developer Support:** Includes detailed PDF tutorials and GitHub resources to accelerate your build time. ## Overview The KeeYees ESP8266 ESP-12F Mini WLAN WiFi Development Board is a compact, 4MB flash memory-enabled module designed for Arduino, NodeMCU, and WeMos compatibility. Featuring 11 versatile digital I/O pins with interrupt, PWM, I2C, and one-wire support, plus a convenient micro USB interface, it empowers developers to create connected projects with ease. Perfect for professionals seeking reliable, scalable IoT solutions backed by comprehensive tutorials and community support. ## Description Product Specification: WIFI Development Board, 4M bytes. Supported (except D0). Support OTA on line. 1 Micro USB connection. 1 analog input (3.3V max input). 5V 1A switching power supply onboard. 11 digital input/output pins, all pins have interrupt/pwm/I2C/one-wire and a micro-USB connection. How to get it started: - Setup driver Before you use the Development Board, you need set up driver. - Python On Windows you need install Python 2.7.10. On Linux, MAC OSX, you don't need install it, comes preinstalled with OS. - Installing Hardware package "Boards Manager or GIT". We recommend using GIT, you can always get the latest version. You can also download detailed PDF tutorial through Githubcom/Keeyees/0001. Or contact us via Product List: 5 x Development Board ## Features - Mini Development Board based on ESP8266 chip. - This board contains 11 digital input / output pins, all pins have interrupt / pwm / I2C / 1-wire and a micro USB connection. - This board is 100% compatible with for Arduino and for WeMos. - WIFI development board, with 4 MB of flash memory. - Technical Support: Our PDF tutorial is available on this page. Please pull down this page to find the tutorial: User Guide (PDF) ## Technical Specifications | Specification | Value | |---------------|-------| | Brand | KeeYees | | Manufacturer | KeeYees | | Package Dimensions | 16.2 x 13.2 x 3.2 cm; 40 g | | Item part number | KY29-US | | Memory Storage Capacity | 4 MB | | Ram Memory Installed Size | 4 MB | | Hard Drive Interface | USB | | Operating System | Linux | | Processor Brand | Espressif | | Processor Count | 2 | | Hardware Interface | USB | | Compatible Devices | Arduino, NodeMcu, WeMos | | Mounting Hardware | 5 x Development Board | | Batteries Included | No | | Batteries Required | No | | Wireless Type | 802.11b | | Total USB ports | 1 | | Connector Type | I2C, USB, WLAN, Wi-Fi | | Manufacturer | KeeYees | | Item Weight | 40 g | ## Product Details - **Brand:** KeeYees - **RAM Memory Installed Size:** 4 MB - **Memory Storage Capacity:** 4 MB - **Connectivity Technology:** I2C, USB, WLAN, Wi-Fi - **Included Components:** 5 x Development Board ## Images ![KeeYees ESP8266 ESP-12F Mini WLAN WiFi Development Board 4M Bytes for Arduino for NodeMcu for WeMos (5PCS) - Image 1](https://m.media-amazon.com/images/I/81yX55Yd+EL.jpg) ![KeeYees ESP8266 ESP-12F Mini WLAN WiFi Development Board 4M Bytes for Arduino for NodeMcu for WeMos (5PCS) - Image 2](https://m.media-amazon.com/images/I/71zMdlQ+6uL.jpg) ![KeeYees ESP8266 ESP-12F Mini WLAN WiFi Development Board 4M Bytes for Arduino for NodeMcu for WeMos (5PCS) - Image 3](https://m.media-amazon.com/images/I/61fD1HgVDNL.jpg) ![KeeYees ESP8266 ESP-12F Mini WLAN WiFi Development Board 4M Bytes for Arduino for NodeMcu for WeMos (5PCS) - Image 4](https://m.media-amazon.com/images/I/61fD1HgVDNL.jpg) ![KeeYees ESP8266 ESP-12F Mini WLAN WiFi Development Board 4M Bytes for Arduino for NodeMcu for WeMos (5PCS) - Image 5](https://m.media-amazon.com/images/I/61LDaZAXEIL.jpg) --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/407644160-keeyees-esp8266-esp-12f-mini-wlan-wifi-development-board-4m](https://www.desertcart.co.uk/products/407644160-keeyees-esp8266-esp-12f-mini-wlan-wifi-development-board-4m) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-19*