ESP8266 Community Forum

- Sat Mar 13, 2021 8:31 am #90807 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

- Mon Mar 15, 2021 1:49 am #90826 the LED is on io 2. it is not a power indicator

- Mon Mar 15, 2021 5:55 am #90833

the LED is on io 2.

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



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.

Assumption is the mother of all f*ckups. At least: that's what I'm assuming.