The finished circuit can display numbers ranging from 0 through 1023, in connection with a 10K preset pot attached to the analog input A0 of the Arduino board. This 4 -digit 7-segment display section ...

With Arduino in hand, he prototyped the circuit on a ... 19 thoughts on “ Mini LED Message Board Built From Retro Displays ” ... lots of photos and information on these old types of LED displays.

This is a simple 0 to 9 counter circuit constructed using Arduino! Here, a common cathode 7-segment LED display is connected to Arduino for displaying the digits. The code (Arduino sketch) allows push ...

The beacon is just a simple ATtiny13 that flashes a message with an invisible IR LED. To receive the messages, ... for an Arduino. The decoder includes a phototransistor and a 20×4 LCD display.