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 ...

The analog sensor on the Arduino board senses the voltage on the analog pin and converts it into a digital format that can be processed by the microcontroller. Here, we are feeding the input voltage ...

In myOpenLab your device will consist of two parts: a diagram and a front ... OR gate and an inverter to drive pin 13 of my Arduino (the LED built into the board). The net effect is the LED ...