Features:

  • Why ESP8266:ESP8266 is a highly integrated chip designed for the needs of a new connected world.It offers a complete and self-contained Wi-Fi networking solution, allowing it to either host the application or to offload all Wi-Fi networking functions from another application processor.
  • Firmware link: https://github.com/nodemcu/nodemcu-firmware;The Data download access to the website: http://www.nodemcu.com; Test Video:https://www.youtube.com/watch?v=Gh_pgqjfeQc.
  • Four SPI Flash Access Modes:The ESP8266 support four different SPI flash access modes: DIO, DOUT, QIO & QOUT. These can be set via the --flash_mode option of esptool.py write_flash. More information about it,refer to: https://github.com/espressif/esptool/wiki/SPI-Flash-Modes.
  • Feature: ESP8266 NodeMcu board has powerful on-board processing and storage capabilities, allows to be integrated with sensors and other specific applicated devices through its GPIOs.
  • High quality & Guaranteed:60 days money back guarantee for any quality reasons,and 24-hour customer service.
It's what I want

I finally got everything I wanted,and it still works so well what I use it all the time.

NodeMCU for University Final Project

About the seller: These are some the most stable and honestly the cleanest looking NodeMCU's that me and my team have managed to find on the internet. 4 for $20 is a great deal and a good idea to get more than 2 at a time just for cost effectiveness, because they are so useful, and because it is really really easy to break these guys. About the microcontroller: NodeMCU's are becoming a popular development board because they have a wifi module built in and are super cheap. However, you get what you pay for. These devices are very sensitive to voltage spikes and do not have the protections that an Arduino or RaspberryPi would have. So use with caution. As an electrical engineer, these have been useful for teaching what can go wrong when you work with a real-world controller versus the best-case scenario.

Reliable

I've had other 8266 and these have been the most reliable I've ever owned. Some of my other ones have never accepted a sketch or they only let you flash a few times, but I've never had an issue with these.

works great and well made

I have been playing with Arduino for a while now and though I would try these boards to add wifi to my projects. I used the info on this amazon page and watched a couple of Youtube movies and had one working in about an hour. now the fun starts automating things and security projects.

I love these

Everything I do I want to connect to WIFI. Plus they are small

Good quality Node MCU 8266 boards

The solder joint's are clean and all boards test ok.

Great Value!

I bought this for me and some friends. Works perfectly. Used with MicroPython and Arduino firmware.

You don't have to wait a month or more to ship from China to get a good price!

I used to buy my NodeMCUs from China, but not anymore. These were competitively priced, quality devices and arrived quickly. I already have one deployed as an LED lightstrip controller and another as a multi sensor. Will be buying more for my next project. Very pleased.

Quality ESP8266-12E on a mini platform

I've been developing IoT stuff on the Wemos (Lorin) D1 R2 board, but saw these 'mini' format boards at a fantastic price. They seem as stable or more so than the larger Arduino size, and come at 1/2 the price (1/3 the size). Completely compatible with Arduino IDE as long as you have the ESP8266 libraries installed from Github. You can clock these at 160Mhz...not as fast as the dual core ESP32, but more libraries are available for this.

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