When are which notebook screen sizes recommended for healthy eyes?
With a notebook, you sit relatively close to the screen. And with monitors of certain sizes, it's recommended to have more distance…
How many LEDs can an ESP8266 control?
I want to build an LED display using WS2812b LED strips. The WS2812b LED strips have a 5V, GND, and D pin. The 5V and GND pins are connected to four external power supplies (5V 60A DC power supply). The digital (D) pin is connected to the ESP8266. My question is, how many LEDs can…