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ESP8366-01 blue led ?

PostPosted: Sat Mar 13, 2021 8:31 am
by RohanHawthorne
Hi, I just want to get the blue led lit on the ESP8266-01 so I connected vcc to 3.3v and gnd to - but nothing happens? How can I minimally get the led to light up ?

Rohan

Re: ESP8366-01 blue led ?

PostPosted: Mon Mar 15, 2021 1:49 am
by JurajA
the LED is on io 2. it is not a power indicator

Re: ESP8366-01 blue led ?

PostPosted: Mon Mar 15, 2021 5:55 am
by QuickFix
JurajA wrote:the LED is on io 2.

Are you sure about that: AFAIK the blue LED is connected to TX which is GPIO1. :idea:

Image

Please note that, while you can use GPIO1 as a generic output, you will loose TX (so you won't be able to use Serial anymore) at run-time.