Turn ON an LED Sketch This is a very simple arduino project where a led is turned on by setting the pin 13 as output, then write it with a high value, in our case that means that pin 13 will deliver 5 ...

In need of a simple microcontroller board for your project? Then, an Arduino board ... barrel jack or VIN pin. The GND pin, which you already know, is for grounding your circuit.

Comparing the Arduino Uno ... simple circuits like LEDs, PIR motion sensors, and other small loads. And yes, the supply provided by the USB port should already be sufficient for you to use the 5V ...

Here is the circuit of an Arduino-based Panic Alarm! The wiring is very simple so that even a novice can construct ... PANIC ALARM - ARDUINO // // by T.K.Hareendran // int rlyPin = 12; // Relay Output ...