- Blink
- Turns on an LED on for one second, then off for one second, repeatedly.
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- Most Arduinos have an on-board LED you can control. On the UNO, LEONARDO, MEGA, and ZERO
- it is attached to digital pin 13, on MKR1000 on pin 6. LED_BUILTIN takes care
- of use the correct LED pin whatever is the board used.
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- The MICRO does not have a LED_BUILTIN available. For the MICRO board please substitute
- the LED_BUILTIN definition with either LED_BUILTIN_RX or LED_BUILTIN_TX.
- e.g. pinMode(LED_BUILTIN_RX, OUTPUT); etc.
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- If you want to know what pin the on-board LED is connected to on your Arduino model, check
- the Technical Specs of your board at https://www.arduino.cc/en/Main/Products
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