I have an ESP32 dev board wired up as a Domoticz sensor node. Apart from the WiFi library, it's 100% my own code. I don't control the onboard LED.
Lately I noticed the onboard LED is blinking in a specific pattern (long short short short short) even though my software is still running.
Does anyone have an idea what it might be?
Weird led blinking
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- Posts: 9709
- Joined: Thu Nov 26, 2015 4:08 am
Re: Weird led blinking
What board are you using? Any idea what 'the onboard LED' is connected to?
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- Joined: Sun Jan 31, 2021 10:11 am
Re: Weird led blinking
Some Chinese knock-off ("HW-628 V1.1") of the NodeMCU v3.
The LED is wired to Arduino pin D2 / Board pin 4 / ESP pin 22. When I digitalwrite this pin I can control the LED.
The LED is wired to Arduino pin D2 / Board pin 4 / ESP pin 22. When I digitalwrite this pin I can control the LED.
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- Posts: 9709
- Joined: Thu Nov 26, 2015 4:08 am
Re: Weird led blinking
Hm, that pin doesn't do anything specific. No clue then, sorry.
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