Most small enlargers have a light bulb that can be replaced with a smaller LED matrix. Some other enlargers can be adapted by bypassing the ... Amount of LED Size of module Power consumption at 5V ...

RGB P4 Led Matrix Clock is a device, based on ESP32 (Mini 32 or 30P WROOM-32 ... To power the RGB matrix panel P4 and the controller, you must use any power supply with a voltage of 5V and a power of ...