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>> No.1769754 [View]
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1769754

Greetings, I have these buttons
https://www.ebay.com/itm/16mm-Rectangle-Momentary-Push-Button-Switch-Self-Lock-Illuminated-LED-Lamp-5-Pin/352438917394

Do they need a resistor or can I just light them up by sending a digital out "1" on the Arduino directly? If I need a resistor which one should I use? Many thanks

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