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Most of the Arduino uno boards have black female pin header. when i bought a ardiuno uno the digital pins 0 to 7 are made of silver pins. What type of pin header is that? How to use these kind of pin headers?

The image shows an adruino uno r3. with some silver pin headers

1 Answers1

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These are corrupted female headers so remove them and solder new ones.

szachy-a
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