- Sat Jul 25, 2015 1:02 am
#24206
Hi! I've been trying to figure out if the esp-12e's LED can be controlled separately from its function as a UART communication indicator light. Right now, when I upload a program or communicate with the serial console, a small blue LED flashes on the 12e. Is it possible to control this LED separately? I've tried all of the GPIOs and can't seem to get it to work. Thanks!
- Sat Jul 25, 2015 1:14 am
#24208
The LED is directly connected to the UART TX line. You can use the TX pin as GPIO1 to control the LED, but only if you don't use UART.
- Sun Aug 16, 2015 8:21 am
#26154
I also have a problem with using the onboard LED on my ESP-12E module.
It does not work with GPIO1 (It works fine with other modules, including ESP-12, but not ESP-12E).
Update:
My ESP-12E has onboard led connected to GPIO2 thru internal 470 Ohm resistor.
It does not work with GPIO1 (It works fine with other modules, including ESP-12, but not ESP-12E).
Update:
My ESP-12E has onboard led connected to GPIO2 thru internal 470 Ohm resistor.
- Sat Aug 22, 2015 11:58 am
#26794
Just for the record: GPIO1 worked for me; however, I also discovered that some of my cheaper ESP-12E chips' LEDs are blown (not working) right out of the box.
