Hello! I have a new Arduino Uno R3 and I'm a little bit surprised... Even I let setup() and loop() empty or I call digitalWrite(13, 0) in setup(), the onboard LED turns on a little bit / sometimes bright if I put my finger on the back of the board or if I just put the board on my desk. Can plea…

LED 13 turns on unexpected

totti1001 March 10, 2024, 8:29pm 3

Hello again,

I have found the reason. It's the plastic cover on the back. So I will remove it and I suggest to everyone to do also....

Cheers

Topic		Replies	Views
Why is LED on D13 glowing? IDE 1.x	10	7801	May 5, 2021
Pin 13 on board LED very dim LEDs and Multiplexing	12	5134	May 6, 2021
LED on PIN 13 flashes with RX/TX on serial communication? LEDs and Multiplexing	2	1999	May 6, 2021
Pin 13 LED always on IDE 1.x	25	50268	May 5, 2021
Led 13 always on IDE 1.x	5	1148	May 5, 2021