You can use an external one or use the one soldered on the board (pin 13). Turn ON an LED Sketch This is a very simple arduino project where a led is ... I love all about electronics, circuit diagrams ...

Looking for a simple circuit to control the light intensity of Light Emitting Diodes (LEDs) or similar lighting sources ... schematic diagram to complete the construction, and use any standard 9VDC ...

we really can’t overstate how simple this project is. A common four-digit LED display is connected up to an Arduino Nano, which is then plugged into the computer for power. [Cristiano] is using ...

What's nice about the Arduino Wi-Fi shield is that it's incredibly simple to use and set up. As is always the case with Arduino, everything is open sourced, and the reference materials make it ...