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Topic: audio speaker resistor (Read 1 time) previous topic - next topic


I once used a pair of free headphones they gave me on a train journey as Arduino speakers (perks of travelling first class).

I wired both of them to an Arduino PWM pin (with a resistor of course!). The beep for "job done" was loud enough to hear in the next room.

No, I don't answer questions sent in private messages (but I do accept thank-you notes...)

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