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  • in reply to: Send button sign from arduino to pc via bluetooth #6584

    Ches Lans
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    Hi..according to me post a link to the shield. Typically, such shields use pins 0 and 1, 2 and 3, or 7 and 8, with some way to switch between pins 0 and 1 and the other pair. Also, when anything is connected to pins 0 and 1, you will have a hard time uploading sketches, because those pins are involved in uploading the sketch.

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