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Question: nRFMicro 1.1 LEDs D2/D3 orientation #39

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Raskilas opened this issue Apr 15, 2021 · 4 comments
Closed

Question: nRFMicro 1.1 LEDs D2/D3 orientation #39

Raskilas opened this issue Apr 15, 2021 · 4 comments

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@Raskilas
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Hi, my question might be silly and outdated, but which orientation should I use for LEDs D2 and D3 on nRFMicro 1.1 board?

nRFMicro_1_1_LED_orientation

@joric
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joric commented Apr 16, 2021

Are you kidding me. It's all there in the picture. Front has matching green on my picture and on yours. I only look at the front. Don't look at the back, back is different. Also see https://lighthouseleds.com/blog/polarity-guide-of-0402-0603-0805-1206-and-most-all-smd-leds.html Mind that LEDs don't have to blink by default, adafruit bootloader knows nothing about pin 1.10. The easiest way to check leds is probably Circuitpython, https://github.com/joric/nrfmicro/wiki/Circuitpython

@joric joric closed this as completed Apr 16, 2021
@Raskilas
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Raskilas commented Apr 16, 2021

Are you kidding me. It's all there in the picture. Front has matching green on my picture and on yours. I only look at the front. Don't look at the back, back is different. Also see https://lighthouseleds.com/blog/polarity-guide-of-0402-0603-0805-1206-and-most-all-smd-leds.html Mind that LEDs don't have to blink by default, adafruit bootloader knows nothing about pin 1.10. The easiest way to check leds is probably Circuitpython, https://github.com/joric/nrfmicro/wiki/Circuitpython

Sorry for confusion, I meant where there is Cathode and Anode on board. It's NOT question about FRONT/BACK orientation, it is about "Cathod on TOP of D2 or on BOTTOM and cathod on TOP of D3 or on BOTTOM". I just attached front/back pictures in case if someone in future won't be able to check back side of his/her LED.

@joric
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joric commented Apr 16, 2021

There are standard footpints. Key (bracket) on the silk is Cathode (minus). It usually goes to ground via load resistor.

image

image

@Raskilas
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Raskilas commented Apr 16, 2021

Thanks! I've checked your first answer edition history and saw point to serigraphy bracket, but this comment is much more clear.

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