push button; Connect one button lead to digital pin 2. Connect the other lead to GND. Uploading the code. Open File > Examples > 02. Digital > DigitalInputPullup in Arduino IDE and upload to the Arduino. When you press the button, you should see the on-board LED light up.
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About Arduino UNO: The Arduino Uno is really a microcontroller board based on the ATmega328. It has 14 digital input/output pins (of which 6 may be employed as PWM outputs), 6 analog inputs, a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, along with a reset button.
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The Arduino UNO connects to the PC via a USB to serial cable. This is how the Arduino can be wired to a button: Download the fritzing source HERE. Note: The wiring is basically the same for a larger big red button which would be easier to push (and more fun!) Notice how the standard 4 pin push button is wired:
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Simple Code Arduino int led = 13; // the pin the LED is connected to void setup() { pinMode(led, OUTPUT) // Declare the LED as an output } void loop() { digitalWrite(led, HIGH) // Turn the LED on }
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Turn On, LED light with a Push Button. A step by step example showing how to Turn On, LED light with a Push Button on an Arduino, this example provides the board schematics, code and a list of components that are required. Example Arduino Schema. Components Required 1 x Breadboard 1 × Arduino Uno R3 1 × LED 1 x Push Button 1 × 330Ω Resistor