Review on HiLetgo 2pcs ESP8266 NodeMCU CP2102 ESP-12E Development Board - Open Source Serial Module (2-Pack) by William Mathis

I bought it and on the first day the WiFi stopped working. I played with it for an hour. I decided to open another package and give it a try. I plugged it in, programmed it and it connected straight away. I still couldn't get the first Wi-Fi to work even after following the online troubleshooting guides. If you don't need anything reliable, this product will work fine, but if you value Wi-Fi running for more than a day or two, avoid this product. Edit: I upgraded it to four stars. After about an hour of email exchanges, HiLetGo offered to exchange the device or give the money back. I would have given five stars if it hadn't taken so much effort to fix this issue. I decided to have a replacement because I think it could be a great device. 2nd Edit: After some thought and success with the second board. I realized the first one was really an accident and HiLetgo worked hard to fix it, so I'm upgrading it to 5 stars again.