Online guides for getting started with Arduino are available at for Windows, for Mac OS X, and for Linux. If you are not using a standard board, it may not have a built-in LED on pin 13, so check the documentation for details of your board. If the green power LED is on but the pin 13 LED is not flashing, it could be that the factory code is not on the chip. If the pin 13 LED is flashing, the sketch is running correctly, which means the chip on the board is working. The flashing LED (connected to digital output pin 13) is being controlled by code running on the board (new boards are preloaded with the Blink example sketch). If the power LED does not illuminate when the board is connected to your computer, the board is probably not receiving power. Standard Arduino boards (Uno, Duemilanove, and Mega) have a green LED power indicator located near the reset switch.Īn orange LED near the center of the board (labeled “Pin 13 LED” in the image below) should flash on and off when the board is powered up (boards come from the factory preloaded with software to flash the LED as a simple check that the board is working). Plug the board into a USB port on your computer and check that the green LED power indicator on the board illuminates. Note : After the comment on my last post, I am posting this !
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