Wifi LED Flood Light (RGB)

You need

64 Pixel LED-Panel (about 2$): 
https://de.aliexpress.com/item/1005007273486672.html
https://de.aliexpress.com/item/4001095066272.html (alternative)

ESP8266 D1 Mini (about 1$):

https://de.aliexpress.com/item/1005005658563136.html
https://de.aliexpress.com/item/1005006235653025.html (alterative)

Building

You can glue the panel in place and then add athe ESP32/ESP8266 board to power the panel using WLED.

Solder 5V from the ESP to V+, GND to V- and an D4 to DIN.

To use the panel you have to flash the ESP with the WLED-Firmware. You can use the online-flash-tool: https://install.wled.me/

Once powered on, the ESP will host an access-point. In the interface you can now set up the LEDs by heading to Config→LED Preferences and then configuring the Panel like this: