--- product_id: 594649266 title: "3pcs ESP8266 NodeMCU CP2102 ESP-12E WiFi Internet Development Board Wireless Module Compatible with Arduino IDE" brand: "keeyees" price: "€ 3.82" currency: EUR in_stock: false reviews_count: 5 url: https://www.desertcart.hr/products/594649266-3pcs-esp8266-nodemcu-cp2102-esp-12e-wifi-internet-development-board store_origin: HR region: Croatia --- # 3pcs ESP8266 NodeMCU CP2102 ESP-12E WiFi Internet Development Board Wireless Module Compatible with Arduino IDE **Brand:** keeyees **Price:** € 3.82 **Availability:** ❌ Out of Stock ## Quick Answers - **What is this?** 3pcs ESP8266 NodeMCU CP2102 ESP-12E WiFi Internet Development Board Wireless Module Compatible with Arduino IDE by keeyees - **How much does it cost?** € 3.82 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/594649266-3pcs-esp8266-nodemcu-cp2102-esp-12e-wifi-internet-development-board) ## Best For - keeyees enthusiasts ## Why This Product - Trusted keeyees brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Review: Everything works great, but there's zero documentation - There are no manuals, no drivers, no links, not even a pinout. In the Arduino IDE you must select NodeMCU 1.0 ESP-12E module. The pinout matches the NodeMCU ESP-12E pinout. After that, everything is a breeze. Everything works, wifi works, pins work (although there are fewer actually usable pins than you think, look into NodeMCU pinout to be sure you know what you are getting). A+ product. Review: Size and Wi-Fi Capability Awesome - I recently learned how to connect a variety of different types of inexpensive sensors to a NodeMCU ESP8266 and use its Wi-Fi capabilities to transmit sensor information to other Wi-Fi connected operating systems like Android and Windows etc. These little NodeMCUs are awesome and have been very reliable. I have used at least a dozen of them in different small hardware projects. None of these MCUs have failed yet. Some of the projects that I have used them in include: 1. Use a motion sensor to automatically turn my desk fan on and off when I sit down or leave my desk area. That project used NodeMCU, heat sensor, relay, fan, lcd display 2. Use a DC volt sensor and NodeMCU to send messages to my cell phone when my car battery is weak. That project used DC voltage senso, NodeMCU, IFTTT technology to get text msg to my cell phone. 3. Use switch and NodeMCU to send message to my cell phone when yard gate is opened and closed. 4. Used weight scale sensor with NodeMCU to weight items ranging from cotton ball to bowling ball. 5. Used Text-to-Speech module with NodeMCU to create a Voice Server so my various NodeMCU projects can use Wi-Fi to send messages to the Voice Server to speak. 6. Use temperature probe and NodeMCU to create a thermo logger that records temperature changes on a microSD memory card and can transmit the temperatures in a web page etc. It is fun and fairly easy to create a variety of different types of smart switches using different sensors, relays and these NodeMCU ESP8266 chips. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07HF44GBT | | Brand | KeeYees | | Brand Name | KeeYees | | CPU Manufacturer | Espressif | | CPU Speed | 80 MHz | | Connectivity Technology | Wi-Fi | | Customer Reviews | 4.6 out of 5 stars 1,392 Reviews | | External Testing Certification | Não aplicável | | Manufacturer Part Number | Na | | Model Number | 8541549622 | | Network Connectivity Technology | Wi-Fi | | Processor Brand | Espressif | | Processor Count | 1 | | Processor Speed | 80 MHz | | Total USB Ports | 1 | | UPC | 705883356144 | | Wireless Communication Standard | 802.11b | | Wireless Compability | 802.11b | ## Product Details - **Brand:** KeeYees - **CPU Speed:** 80 MHz - **Connectivity Technology:** Wi-Fi - **CPU Manufacturer:** Espressif - **Wireless Communication Standard:** 802.11b ## Images ![3pcs ESP8266 NodeMCU CP2102 ESP-12E WiFi Internet Development Board Wireless Module Compatible with Arduino IDE - Image 1](https://m.media-amazon.com/images/I/61ffhYwoLkL.jpg) ![3pcs ESP8266 NodeMCU CP2102 ESP-12E WiFi Internet Development Board Wireless Module Compatible with Arduino IDE - Image 2](https://m.media-amazon.com/images/I/61DHNv-0fGL.jpg) ![3pcs ESP8266 NodeMCU CP2102 ESP-12E WiFi Internet Development Board Wireless Module Compatible with Arduino IDE - Image 3](https://m.media-amazon.com/images/I/71zDVlW3OjL.jpg) ![3pcs ESP8266 NodeMCU CP2102 ESP-12E WiFi Internet Development Board Wireless Module Compatible with Arduino IDE - Image 4](https://m.media-amazon.com/images/I/61a4NnSQYEL.jpg) ![3pcs ESP8266 NodeMCU CP2102 ESP-12E WiFi Internet Development Board Wireless Module Compatible with Arduino IDE - Image 5](https://m.media-amazon.com/images/I/51irArYra2L.jpg) ## Questions & Answers **Q: When i connect it to the usb port on my windows 10 computer, i do not get a new com port. anyone else have this issue?** A: As others have suggested, installing the serial interface driver is necessary. The driver you are looking for is the CP2102 driver. A google search for CP2102 driver should bring you to it. The first link that appears, at silabs.com. it's the "CP210X USB to UART Bridge VCP" driver. This is required for windows to create the virtual com port (VCP). Once installed, you will see a COM port assigned in Device Manager under Ports and Communications section. This will be the COM port you select in Arduino IDE or whatever flasher you use, such as esptool. Other details: - A data cable is necessary (not just a charging cable). - It does NOT show up or appear as "another memory drive" to Windows. You will only see the COM port, because the only part of the board directly exposed to Windows is the serial interface chip (CP2102). **Q: do i need to use step down converter or can i connect 12v right to vin?** A: Hello, the working voltage of the ESP8266 module is 3.3v to 5V, you need to use a voltage regulator to stabilize the voltage to 5V. **Q: can not upload a sketch with arduino ide ?** A: Assuming you’ve got the correct USB-to-Serial drivers installed already, you’ll then need to add the board profile for this device. It’s a JSON document which you can easily find by doing an internet search for “esp8266 arduino board profile”. Add the URL to that json doc in the Arduino IDE preferences -> Additional boards manager URLs. Then, bring up the Board Manager (Tools -> Board -> Board Manager…) and search for esp8266. Select that result and click Install. Now you can select the correct board profile under Tools -> Board -> esp8266 -> NodeMCU 1.0 (ESP-12E Module). Finally, select the correct port. For example, on the Mac, you’d select Tools -> Port -> /dev/cu.SLAB_USBtoUART **Q: Is a0 adc analog pin on this board 3.3v compatible, or is it only 1v compatible? in other words, does it scale 3.3v to 1v for the 8266 native chip?** A: The nodemcu boards include a voltage divider to scale the 3.3v to 1v. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Everything works great, but there's zero documentation *by A***N on 16 July 2023* There are no manuals, no drivers, no links, not even a pinout. In the Arduino IDE you must select NodeMCU 1.0 ESP-12E module. The pinout matches the NodeMCU ESP-12E pinout. After that, everything is a breeze. Everything works, wifi works, pins work (although there are fewer actually usable pins than you think, look into NodeMCU pinout to be sure you know what you are getting). A+ product. ### ⭐⭐⭐⭐⭐ Size and Wi-Fi Capability Awesome *by L***N on 12 April 2022* I recently learned how to connect a variety of different types of inexpensive sensors to a NodeMCU ESP8266 and use its Wi-Fi capabilities to transmit sensor information to other Wi-Fi connected operating systems like Android and Windows etc. These little NodeMCUs are awesome and have been very reliable. I have used at least a dozen of them in different small hardware projects. None of these MCUs have failed yet. Some of the projects that I have used them in include: 1. Use a motion sensor to automatically turn my desk fan on and off when I sit down or leave my desk area. That project used NodeMCU, heat sensor, relay, fan, lcd display 2. Use a DC volt sensor and NodeMCU to send messages to my cell phone when my car battery is weak. That project used DC voltage senso, NodeMCU, IFTTT technology to get text msg to my cell phone. 3. Use switch and NodeMCU to send message to my cell phone when yard gate is opened and closed. 4. Used weight scale sensor with NodeMCU to weight items ranging from cotton ball to bowling ball. 5. Used Text-to-Speech module with NodeMCU to create a Voice Server so my various NodeMCU projects can use Wi-Fi to send messages to the Voice Server to speak. 6. Use temperature probe and NodeMCU to create a thermo logger that records temperature changes on a microSD memory card and can transmit the temperatures in a web page etc. It is fun and fairly easy to create a variety of different types of smart switches using different sensors, relays and these NodeMCU ESP8266 chips. ### ⭐⭐⭐⭐⭐ solid built 8266 12-E boards *by B***N on 12 June 2019* These 8266 12-5 Node-EMCU boards are a great buy for the price. These allowed me to get a few IoT projects off the ground. As I get deeper into the project I am looking into switching to the V1 8266 boards as they are smaller and would probably be more then sufficient for this project. The Pros - These boards are easy to set up, configure, and get working for ESP-8266 projects. Easy to use, headers already installed. The Cons - The board seems with be missing a clear layout guide. The top and bottom have different pin names. I was able to figure it out but a clearer pinout on the board would be helpful. Over all I would recommend these boards for anyone looking to get into Ardunio and or IoT projects that require wifi. ## Frequently Bought Together - KeeYees 3pcs ESP8266 ESP-12E Development Board WiFi WLAN Wireless Module CP2102 for NodeMCU for ESP-12E for Arduino - BINZET DC Converter Step Down Regulator 5V Regulated Power Supplies Transformer Converter (5V 3A 15W) - HiLetgo 120pcs/3x40pcs Breadboard Jumper Wires Prototype Board Dupont Wire Male to Male, Male to Female, Female to Female, 2.54mm to 2.54mm 20CM Wires Assortment Kit for Arduino Raspberry PI DIY --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/594649266-3pcs-esp8266-nodemcu-cp2102-esp-12e-wifi-internet-development-board](https://www.desertcart.hr/products/594649266-3pcs-esp8266-nodemcu-cp2102-esp-12e-wifi-internet-development-board) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-06-18*