HiLetgo 3pcs ESP8266 NodeMCU CP2102 ESP-12E Development Board Open Source Serial Module Works Great for Arduino IDE/Micropython (Large)

I used these for a WLED project. It worked perfectly and was really easy. The value is great, I can make inexpensive LED projects and control them from my phone. If you have issues connecting, make sure you connect to 2.4g wifi. You use a fraction of the memory for the project. The usb port is tight and not sloppy or loose. Great product!

I recently purchased the HiLetgo 3pcs ESP8266 NodeMCU CP2102 ESP-12E Development Boards for a custom LED project I had in mind. After spending some quality time with these boards, I'm thoroughly impressed and feel compelled to share my experience.First off, the ease of use is remarkable. As someone who appreciates the nuances of DIY electronics but isn't a seasoned expert, I found the setup process to be straightforward and user-friendly. The boards were compatible with my existing software setup, and I didn't encounter any significant hurdles during the initial programming phase.The real magic happened when I started using these boards for my custom LED setups. The ESP8266 NodeMCU's ability to effortlessly drive and control LEDs was a game-changer. Whether it was for basic lighting projects or more complex, multi-colored LED arrays, these boards performed flawlessly. The Wi-Fi capability is also a huge plus, offering the convenience of wireless control, which is perfect for smart home applications.I must also commend the stability and reliability of these boards. Throughout my projects, they maintained consistent performance without any significant glitches or overheating issues. This reliability is crucial when you're knee-deep in a project and need your components to perform without a hitch.In terms of value for money, this pack of three is an absolute steal. The quality and functionality you get for the price are unmatched, making these boards a must-have for anyone into DIY electronics, especially LED projects.To sum up, the HiLetgo ESP8266 NodeMCU Development Boards are a fantastic investment for anyone looking to delve into custom LED projects or general IoT applications. Their ease of use, reliability, and excellent value make them a standout choice. I highly recommend these to both novices and seasoned tinkerers alike!

I recently used this module in a project to control LED lights, and I have to say, it worked incredibly well.One of the best things about the ESP8266 is its low price point. Despite being packed with features, including a built-in WiFi chip and support for the Arduino IDE, the module is incredibly affordable, making it a great choice for hobbyists and professionals on a budget.In my LED project, I used the ESP8266 to control the lights via a web interface. The module responded quickly and reliably to all of my commands, and I was able to create a simple web page that allowed me to turn the lights on and off, and adjust their brightness.Another great thing about the ESP8266 is its compact size. The module is small enough to fit in just about any project, making it incredibly versatile. Despite its small size and low price, the module is also quite powerful, with plenty of processing power and memory to handle a wide range of tasks.

I made a WiFi filament detector sensor with this HiLetgo ESP8266. I followed instructions from a YouTube video and made a few adjustments to the sketch to make a filament detector sensor for my modified Creality CR10 3D printer. I am using an Intel NUC and Ubuntu. This HiLetgo ESP8266 board is connected to a microswitch that the filament rides on. When the filament runs out the switch opens and sends a signal to pause my 3D printer until I reinstall new filament.It works great, I did have issues with programming it through the Arduino IDE but that is because I am an amateur programming Arduino.

WiFi and reasonable compute power on a tiny (cheap) board. Cheapest way to get a WiFi enabled device right now, that I know of. Game changer for amateur IoT stuff around the house. It can expose a web server or HomeKit service on the network, for example, so you can plug it into a usb power source, and control a garage door, environment sensors, buttons, locks, relays, etc.You can update the firmware OTA too, which is very cool. I’m using Arduino, but you can program it lots of other ways.Only downside with these little guys is that the number of gpios you can actually use is very limited — much less than the generous-looking number listed. The reason is that most of the GPIO pins are required to be high or low at boot in order to select normal operation. (Using these pins for gpio would result in unreliable behavior at boot, e.g booting into a random mode after a power cut). Not all pins have pull-up built in either, which is workable, but inconvenient.I forget the exact number of pins “freely available” for use, but I am using three right now which is close to the max. You could use an i2c gpio expander if this is a problem for you, but for the extra few dollars you might as well buy the ESP32, which is much more powerful in almost every way (incl a lot more gpios).However, for a single iot device, usually a small handful of gpio is all you need, so shaving a few bucks off the per unit price is very welcome. (Did I mention these are insanely cheap?)