Hello,
Is it possible to turn off the power LED of Arduino Nano ESP32 within the sketch? I'm able to achieve this on my Nano 33 boards by running digitalWrite(LED_PWR, LOW); but I haven't been able to achieve the same with the Nano ESP32. I've checked some of Nano ESP32's system files and couldn't find LED_PWR. Thanks!
No.
As you can see from this part of the Nano ESP32 schematic, the power LED is connected directly to GND and to +3.3V through a resistor R8.
To get what you want, you needed to rework the board.
Ref: "https://docs.arduino.cc/resources/schematics/ABX00083-schematics.pdf
To get what you want, you needed to rework the board.
Thank you. And this would be physically de-soldering the power LED I believe?
No.
Remove R8, and put a new discrete 500 Ohms from LED to any GPIO.
I think the purpose of routing the power LED to a GPIO is to still keep the power LED while adding a way to control its on/off state right? What if I don't care about the power LED? Can't I just desolder it? Or even break it to save me the worry of desoldering?
Yes, you can.
I found the simplest solution was to remove the LED and use the on board LED as a power indicator turning it on in set up.
I wanted to do a low power power down so the led hets turned off just befor the power down line.
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