Review on KeeYees ESP8266 ESP-12F NodeMcu Mini WLAN WiFi Development Board 4M Bytes for Arduino – Pack of 5 by Jim Kriegshauser

Excellent handkerchiefs, analogues of WeMos D1 Mini. They can be used for many purposes, but they make excellent low-cost LED controllers. My husband flashed one with a WLED (free and open source software), soldered it directly to 50 5V LEDs and placed it in a sphere he created on his 3D printer as a gift for our grandkids. of any kind included in these boards so you really need to know what you are doing. If you are unsure, there is a link to a PDF file at the top of the product description that you can view. Each board is packed separately. The quality is excellent, especially in this price range. No complaints.