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Published 20 hours ago • verified publisher icon LilyGO

red/blue LEDs

Open carstenblt opened this issue 6 years ago • 8 comments

Hi there, there are two LEDs on the board that I find are not connected to any GPIO. Am I just missing the right one? Any way to disable them via software?

Thanks in advance.

carstenblt avatar Aug 07 '18 17:08 carstenblt

The blue LED is power, I don't know if it can be controlled The green LED can be controlled with GPIO21 The red LED: I'm still trying to figure this out

thomasleveil avatar Jan 03 '19 00:01 thomasleveil

There is only 2 LEDs on this board, BLUE (power indicator) and GREEN (wifi indicator). The GREEN LED can be controlled with GPIO21. To turn off the BLUE LED, power the board with Lithium battery interface.

wieb18 avatar Feb 03 '19 06:02 wieb18

the blue LED is connected to the battery charging controller, it goes off if the battery is not charging the red LED is supposed to light when the board is powered, but it is not working for me, neither from USB, nor from a battery

heeen avatar May 09 '19 17:05 heeen

@LilyGO is it a known issue that the red led is not working?

heeen avatar May 09 '19 17:05 heeen

Wait, there is a red led ? Doesn't work on my board neither then.

tionebrr avatar May 10 '19 06:05 tionebrr

Okay, just looked at it closely, the red led (LED_G2) is implanted but R22 (the 1k brake) is not. If you want the red led to work you will need to solder the 0402 resistor. I believe they didn't implanted it to avoid draining batteries continuously. Better to blink LED_G1 (IO21) when needed

tionebrr avatar May 10 '19 07:05 tionebrr

What is the T18?

tionebrr avatar May 19 '20 17:05 tionebrr

My RED led is blinking like crazy, how do I control it ?

patrickelectric avatar Apr 20 '23 12:04 patrickelectric