HiLetgo 2pcs ESP8266 NodeMCU CP2102 ESP-12E Development Board Open Source Serial Module (Pack of 2PCS)

I had purchased arduinos and the esp-01 separately before I realized these were a thing. I purchased 6 of these so far and will probably end up buying more. These are very versatile and are perfect for the automation project Im working on. I would recommend these to anyone looking to work with devices (sensors, servos, etc) that they want to control or monitor online.

Two out of 4 failed a week into use. Random reboots and unstable operation make this a poor choice for any project. HiLetGo reached out to me and sent me two more nodemcus. Same story, random issues with rebooting

I initially had some trouble uploading my code to my development boards. I tried searching the web for instructions and I kept getting the same error. I didnt realize the instructions were in the product description. After following the instructions provided I had a demo web server up and running in minutes. Im giving this 5 stars despite my initial issues because it was my fault for not noticing. I only mention it so that other people dont repeat my mistake.

Ive purchased many of these for some sensor projects around the home with great success, well on my windows machine anyway. After much research and installing drivers from questionable sources Ive given up working on these devices with my Mac. Ill continue to buy these until I find an alternative with better driver support.

Unlike basic ESP8266 modules this has the Serial interface integrated so you can program it directly from your PC, a big plus. This also has a full range of I/O pins like an Uno and can be programmed with same software. Perfect for IOT Projects, lots of support on the web. They should make an Uno size board that would accept Uno shields, would make it even more perfect.

Ive used 3 different boards all worked perfectly. Great value wifi mqtt and gpio all did well.

UPDATE: I first thought this board was defective, given the exact same behavior experienced in the reviews. HiLetgo reached out to me, which was nice. Their response didnt help, but once I got a good IDE up and running, the boards seem to work fine. So, user error I guess.

Very easy to use! Theyre essentially the same as Arduino boards but with built-in WiFi capabilities and more impressive specs. For IoT projects these are an absolute must-have.

This is the best dev board out there if youre looking for an inexpensive way to get real input and output on the internet. The Arduino was the best tool for electronics tinkerers until the ESP 8266 came out. It has WiFi and everything needs a connection to the net now. Every project has more possibilities when data is flowing. I made a remote to control

I have been using mine for a year and its been great. I used it with mongoose os which it much simpler to use than arduino IDE. I love this little board.