Green and Blue LED inside RGB Led. Learn more about controlling LDR with Arduino here. There are two types of RGB LEDs, one is common cathode type (common negative) and other is common anode type ...

In this project I am going to share a LED Scroll ... attention to the positive and negative of the terminals. As the picture showed below. Connect it to a 12 V power supply, download a program (Check ...

Let it hit your red LED ... button presses would make it speed up even more. But there are really just the two speeds with the current programming. Inside the cool laser-cut box is an Arduino ...

As co-leader of my high school’s Engineering Team, we decided to give the members an Arduino ... The positive end (longer pin) needs to be in the same column as the resistor, and the negative end ...