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

Used these for a WLED LED strip project in my room and they worked flawlessly right out of the box. Getting them on WiFi was super easy and the Arduino IDE setup was not bad at all even for someone who is not super deep into embedded stuff. You really cannot beat getting 3 boards for this price, it is a total no brainer for any DIY electronics project.

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 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 used the web installer to instal WLED on my devices. At first I installed WLED v0.14.1 and the UI took forever to load or never loaded, it was hard to acquire wifi, and the devices would go often offline. I was ready to trash them. I then installed WLED v0.13.3, and voila! The devices now work perfectly (but I haven't connected any lights yet.) Lastly, everyone who had problems finding the right microUSB cable was right. I tried four cables before one worked.

Great board and are very economical. I purchased 9 of these boards for a freezer monitoring project at the local food bank. I have them all reporting to the IOT Cloud and they are working great. No major complaints, although I would like to have them OTA compatible.

Once the drivers were installed - ran into a couple of glitches but essentially my second attempt at loading the drivers worked. Once past that - the rest was a breeze. I was able to build several prototypes to test out the functionality. Board is well made - can't see issues with the soldering or pins. HiLetGo is becoming my go to seller for Arduino related products. Most of the technical details are already listed in other reviews. One thing I found out (was unaware) - if you power the board via USB then the Vin pin provides 5V output for other sensors. Can't provide high current in my testing it easily tolerated a few milliamps. I used three boards to build #1. Web Server with sensors sending data to remote #2. Web Client with OLED SSD1315 display and #3. Energy Meter using an INA219 module reporting current and voltage. To use the SDA & SCL pins for serial communication for LCD or OLED displays for example, you need the following in your sketches: #include <Wire.h> #define I2C_SDA 4 /// ESP8266 NodeMCU SDA pin GPIO4 = D2 #define I2C_SCL 5 /// ESP8266 NodeMCU SCL pin GPIO5 = D1 // add in your setup section Wire.begin(I2C_SDA, I2C_SCL); /// Identify SDA & SLC pins for ESP8266 NodeMCU Some additional information for pin mapping from my notes. Hope it's helpful for others. D0 = GPIO16; Wake [connect RST to D0] D1 = GPIO5; SCL Serial Clock - D2 = GPIO4; SDA Serial Data - #include Wire.h & Wire.begin(SDA, SCL); D3 = GPIO0; Using 0 or D3 both accepted D4 = GPIO2; using 2 or D4 both accepted D5 = GPIO14; D6 = GPIO12; D7 = GPIO13; D8 = GPIO15; D9 = GPIO3; D10 = GPIO1; LED_BUILTIN = GPIO16 (auxiliary constant for the board LED, not a board pin);

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2 of 3 items failed after a few days, did not bother to open the third. Returned it. Perhaps you will have better luck?

Bought 3x NodeMCU ESP8266s; 2x for a specific project, and one for testing purposes. All of them arrived well packaged and working perfectly. Setup instructions on this Amazon listing for configuring the Arduino IDE were perfect, and got me up and running a blink sketch within 5 minutes. I currently have one sending hall effect sensor states to another, and displaying the state on a TM1637 7 segment LED display - I was able to get them to communicate via wifi (UDP) with no discernable lag at over 5 metres apart.

De muy buena calidad

Funcionan a la perfección