The "Countdown Box" project is a hand-made cardboard box system that includes a servo motor, LCD screen, blue LED, buzzer, and five push buttons. Project concept: On the right side, there are two ...

I have a Small Model Railway, 15 buildings, all with 1 LED, some with 2. All connected with an Arduino Nano and a TLC5974 24 channel PWM controller. I used PWM so I could set the desired brightness, ...