Attach external LED

rajmishra

Can we attach one small SMD LED through gpio pin? If yes, can we conditionally blink it at some trigger point?

Eric

yes and yes

rajmishra

Is there any sample code available, or if you could guide me through.
Thanks

Eric

Ah, i realized you were asking about SMD LED not attaching a singular LED.  As long as it doesn't require firmware level code, like with a NeoPixel strand, it should be fine.  Which SMD strand are you specifically looking at?

rajmishra

Eric, I am not using any strand or strip like NeoPixel. I want to attach single SMD LED.

Eric

Post a link to the specification sheet of the specific model you are using.

rajmishra

I would be using this LED
https://www.digikey.in/product-detail/en/lumileds/L130-6580001400001/1416-1222-2-ND/4754503

Matt

@rajmishra

You can attach that between a GPIO and the 3V or regulated 3V pin, but you will need to add a series resistor to limit current.  GPIOs should not exceed 5mA.

You can use the GPIO module as well as the timer module to create a simple blinking pattern.  Any system event can trigger your timer.