LED on ESP32

Question

LED on ESP32

pmknowles opened this issue 4 years ago · comments

Got mine working well with 5 EQ3s so thank you.
Not a programming issue but, nevertheless, would be useful. The LEDs on my ESP32s are painfully bright. It would be good to have a command to turn them off or only flash if there was an issue (loss of WifFi, MQTT or low battery on the EQ3).

paul · Answer 1 · Fri Mar 06 2020 04:02:11 GMT+0800 (China Standard Time)

Which ESP32 module are you using?

pmknowles · Answer 2 · Fri Mar 06 2020 04:05:49 GMT+0800 (China Standard Time)

I think it's a Sparkfun one. It has a green and blue LED which will light the room at night!! Regards Phil Sent from Outlook Mobile<https://aka.ms/blhgte>

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paul · Answer 3 · Fri Mar 06 2020 05:56:02 GMT+0800 (China Standard Time)

The ESP32 boards I have seen use either gpio2 or gpio5 for an indicator LED. I believe the sparkfun boards also have an LED permanently connected to power (there may be a bridge/link you can remove to disable this).
This application uses GPIO2 for a status indicator as it is based around a generic WROOM32 devkit from ebay.
Check which GPIO your board uses for its second LED by looking up the schematic or hookup guide.

Regards.

Paul.