2Pcs ESP8266 ESP-12 ESP-12F NodeMcu D1 Module WeMos Lua 4M Bytes WLAN WiFi Internet Development Board Base on ESP8266 ESP-12F, Compatible with WeMos Wifi Module

I am using these for my home assistant home automation. They work as expected and I have completed 2 projects with them so far. I will be ordering more for projects in the future.

These are great little micro-controllers for small projects. They have just enough pins to monitor a capacative moisture sensor and control a couple of LED and possibly an OLED or LCD using I2C or SPI.

These work great! I haven't had any issues with them whatever and they do exactly what they are supposed to do. I'm an avid Arduino (or clone) hobbyist. I love the form factor of these little ESP8266 boards. Just big enough to be able to work with them easy enough, but tiny enough to fit in even the tiniest project boxes (ok well almost; still pretty cool!)

Great IOT Package - made a great wireless controlled "on air" light switch for streaming .

Great board. Small and everything worked perfectly. Be aware the silkscreen PIN numbers on the board are not the same numbers you use in the IDE. Look for a pinout map to get the correct numbers.

they dont connect to my wifi

The ones that I received appear to be a good clone of the WEMOS D1 mini. Wifi access shows good strength to my APs. They have been working flawlessly for about 3 weeks now - I will update if there is any change in reliability.These are working perfectly for the use case I have. I am using one of these to connect to my boiler with a dual relay - this controls the heat to the 2 zones I have in my house. I have connected the others with dht11 sensors so they can report temperature and humidity. For a small amount of money, I was able to build my own "smart" thermostat with remote sensors by integrating these into Home Assistant. Tasmota firmware works fine with these boards.

2 of them are not working. and one of them lost Wi-Fi connection every time