There are so many nice hacks in [Joekutz]’s retro LED display project that it’s hard to know where to start. There’s his DIY LED display controlled by an Arduino UNO. To have some… ...

The 1K resistors are used for base current limiting, and the 390R resistors limits the operating current of the LED display segments. In the Arduino board, digital outputs from D2 to D8 are used to ...

Here, a common cathode 7-segment LED display is connected to Arduino for displaying the digits. The code (Arduino sketch) allows push button increment of the counter from 0 to 9. The whole circuit can ...

message on the LCD, and turn a green LED on. Afterward, it will clear the screen, turn on a red LED, and display a "Short break!" message with a count-up timer for five minutes.

If you’ve been pining for a retro-chic 16×2 LCD display to enhance your Windows computing experience, then [mircemk] has got you covered with their neat Windows-based LCD Info Panel. You… ...

On its own, an LED is very simple: voltage is applied to a semiconductor diode, and it lights up. An LED display, meanwhile, combines this simple notion with the existing principles of an LCD.