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Author Topic: Serial library documentation misleading  (Read 605 times)
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I don't think you connected the grounds, Dave.
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To use them to communicate with an external serial device, connect the TX pin to your device's RX pin, the RX to your device's TX pin, and the ground of your Mega to your device's ground.

This is a little misleading - it won't work, for example, with a serial device with RS232 levels, and may do some damage.

"Pete, it's a fool looks for logic in the chambers of the human heart." Ulysses Everett McGill.
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Thanks, I tried to clarify this.

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