HiLetgo 1PC ESP8266 NodeMCU CP2102 ESP-12E Development Board Open Source Serial Module Works Great for Arduino IDE/Micropython (Small)

Getting it flashed was a bit of a pain but afterwards it was great to work with.

Using Arduino code that emulates up to 14 Wemo switches, you can control this board with Alexa voice commands! You can use it with relays to control switches for a fraction of the cost of the Wemo switch. You can also set it up with an IR LED to control TVs, LED strips, etc. Guides on how to do this can be easily found with an online search.

These boards do not connect with the Arduino IDE. I plug them in and never see a port - and Ive followed the instructions about downloading the esp drivers and software, etc. THE BOARDS DONT WORK! Save your money and get them from someone reputable like adafruit instead. Youll be much happier. These are a ripoff.

You cant beat the value of this little board. I built a remote temperature sensor that broadcasts on my home network via wifi.

Order delivered in few days as promised. Tried blink demo, internal led flashing. Worked great so far - after bit of installation hassle. Running windows 10, I could not select COM port. Tried few micro USB cables. Windows seemed to detect the device as it beeped, and didnt display any errors. Eventually I opened device manager and noticed it needed drivers. Googled for CP210x USB to UART Bridge drivers not found. Googled, found Microsoft tech site recommending using drivers from silabs. Did so. COM port works, upload speed 921600. Now just waiting for some spare time to delve deeper :)

Absolutely awesome little device. Given the low price, fast shipping, size, and features, I will be using this as my go-to board from now on. I program it with the Arduino dev environment as a Node MCU 1.0 (ESP-12E Module) board. It is simply amazing how small and capable this thing is. I was able to connect to my Wi-Fi in no-time, and it runs my sketches without any problems. I included a picture of this board next to a 9V battery to show the size (I did NOT attempt to run it using the battery). Highly recommended.

Check your usb to data cable. If you dont see a virtual port (i.e. COM 8) the board may not be connected right! t does work!

If you are familiar with the Arduino UNO then you will have no problems using this board.

NodeMCU actually has a surprising amount of docs a community support, so programming with this thing was painless. I also love how they included config info in the description. Great product!

Bought these twice. Total of 4. They keep dying with cant flash error that is unrecoverable. One unit got so hot to touch it was stinking the room. I do not recommend these.