For a night vision camera, I bought NoIR Pi camera and IR leds(Can be attached to both sides of the camera). But I found that my Pi camera doesn't have metal part on the attaching part. So I cannot use my IR leds with pi camera. Can I use it with pi's gpio? Actually I only need to turn on the leds, so I wonder if I can supply power to leds with raspberry pi or arduino's pins. Additionally If I connect the leds with jumper cable or something, should I solder it or is it okay just tying it.
How to use IR leds that is not working on Pi camera
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You can connect your leds to any DC power source, just be sure to limit the current by using a suitable series resistor to avoid destroying your leds. And don't look into them to prevent eye damage, as your eyes will not accomodate to invisible light.
In good approximation:
I = U / R
with:
Or more exact:
https://www.sparkfun.com/tutorials/219